{"id":23257,"date":"2025-11-11T18:07:37","date_gmt":"2025-11-11T18:07:37","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=23257"},"modified":"2025-11-11T18:07:37","modified_gmt":"2025-11-11T18:07:37","slug":"twilio-preflight%e3%81%a7%e9%80%9a%e8%a9%b1%e5%93%81%e8%b3%aa%e3%82%92-%e8%a8%ba%e6%96%ad-%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/23257\/","title":{"rendered":"Twilio Preflight\u3067\u901a\u8a71\u54c1\u8cea\u3092 &#8220;\u8a3a\u65ad&#8221; \u3059\u308b"},"content":{"rendered":"\n<\/p>\n<div>\n<h2 id=\"%E3%81%AF%E3%81%98%E3%82%81%E3%81%AB\" data-line=\"0\" class=\"code-line\">\n \u306f\u3058\u3081\u306b<\/h2>\n<p data-line=\"1\" class=\"code-line\">\u3053\u3093\u306b\u3061\u306f\uff01<a target=\"_blank\" href=\"https:\/\/ivry.jp\/company\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">\u682a\u5f0f\u4f1a\u793eIVRy<\/a> \u3067\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u3057\u3066\u3044\u308b<a target=\"_blank\" href=\"https:\/\/x.com\/tsutoutakehara\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">tsutou<\/a>\u3067\u3059\u3002<\/p>\n<p data-line=\"3\" class=\"code-line\">VoIP\u3067\u97f3\u58f0\u901a\u8a71\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u97f3\u58f0\u901a\u8a71\u30a2\u30d7\u30ea\u306b\u304a\u3044\u3066\u300c\u97f3\u58f0\u304c\u805e\u3053\u3048\u306a\u3044\u300d\u300c\u9014\u5207\u308c\u308b\u300d\u3068\u3044\u3063\u305f\u30e6\u30fc\u30b6\u30fc\u554f\u3044\u5408\u308f\u305b\u306f\u3001\u30b5\u30dd\u30fc\u30c8\u30c1\u30fc\u30e0\u306b\u3068\u3063\u3066\u8abf\u67fb\u306e\u96e3\u6613\u5ea6\u304c\u9ad8\u304f\u5927\u304d\u306a\u8ca0\u62c5\u3068\u306a\u308a\u307e\u3059\u3002<br \/>\u7279\u306b\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u306b\u8d77\u56e0\u3059\u308b\u554f\u984c\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u81ea\u8eab\u3067\u306f\u539f\u56e0\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u304c\u56f0\u96e3\u3067\u3001\u7d50\u679c\u3068\u3057\u3066\u591a\u304f\u306e\u30b5\u30dd\u30fc\u30c8\u4f9d\u983c\u306b\u3064\u306a\u304c\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p data-line=\"6\" class=\"code-line\">\u305d\u3053\u3067\u4eca\u56de\u3001<strong>Twilio Preflight<\/strong> \u3092\u6d3b\u7528\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u4e8b\u524d\u306b\u81ea\u5206\u306e\u901a\u8a71\u54c1\u8cea\u3092\u8a3a\u65ad\u3067\u304d\u308b\u6a5f\u80fd\u3092\u30a2\u30a4\u30d6\u30ea\u30fc\u30a2\u30d7\u30ea\u306b\u516c\u958b\u3057\u307e\u3057\u305f\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u54c1\u8cea\u5224\u5b9a\u30ed\u30b8\u30c3\u30af\u306e\u8868\u73fe\u5185\u5bb9\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u5411\u4e0a\u3078\u306e\u53d6\u308a\u7d44\u307f\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p data-line=\"8\" class=\"code-line\"><span class=\"embed-block zenn-embedded zenn-embedded-card\"><iframe id=\"zenn-embedded__f9aed5b2c910c\" src=\"https:\/\/embed.zenn.studio\/card#zenn-embedded__f9aed5b2c910c\" data-content=\"https%3A%2F%2Fwww.twilio.com%2Fen-us%2Fchangelog%2Ftwilio-voice-android-and-ios-sdks-preflight-apis-are-available-n\" frameborder=\"0\" scrolling=\"no\" loading=\"lazy\"><\/iframe><\/span><a target=\"_blank\" href=\"https:\/\/www.twilio.com\/en-us\/changelog\/twilio-voice-android-and-ios-sdks-preflight-apis-are-available-n\" style=\"display:none\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/www.twilio.com\/en-us\/changelog\/twilio-voice-android-and-ios-sdks-preflight-apis-are-available-n<\/a><\/p>\n<h2 id=\"%E5%AE%9F%E9%9A%9B%E3%81%AE%E7%94%BB%E9%9D%A2\" data-line=\"10\" class=\"code-line\">\n \u5b9f\u969b\u306e\u753b\u9762<\/h2>\n<div class=\"s_table\"><table data-line=\"11\" class=\"code-line\">\n<thead data-line=\"11\" class=\"code-line\">\n<tr data-line=\"11\" class=\"code-line\">\n<th>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c6\u30b9\u30c8\u7d50\u679c<\/th>\n<th>\u74b0\u5883\u60c5\u5831<\/th>\n<\/tr>\n<\/thead>\n<tbody data-line=\"13\" class=\"code-line\">\n<tr data-line=\"13\" class=\"code-line\">\n<td><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/zenn-user-upload\/3be84f7b5b06-20250904.jpg\" alt=\"\" width=\"300\" class=\"md-img\" loading=\"lazy\"\/><\/td>\n<td><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/zenn-user-upload\/b8fd4f719982-20250904.jpg\" alt=\"\" width=\"300\" class=\"md-img\" loading=\"lazy\"\/><\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<div class=\"s_table\"><table data-line=\"15\" class=\"code-line\">\n<thead data-line=\"15\" class=\"code-line\">\n<tr data-line=\"15\" class=\"code-line\">\n<th>\u8907\u5408\u7684\u306b\u3044\u304f\u3064\u304b\u306e\u554f\u984c\u304c\u3042\u308b<\/th>\n<th>\u901a\u8a71\u9045\u5ef6\u304c\u8d77\u304d\u3066\u3044\u308b<\/th>\n<\/tr>\n<\/thead>\n<tbody data-line=\"17\" class=\"code-line\">\n<tr data-line=\"17\" class=\"code-line\">\n<td><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/zenn-user-upload\/5a66c391171d-20250904.jpg\" alt=\"\" width=\"300\" class=\"md-img\" loading=\"lazy\"\/><\/td>\n<td><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/zenn-user-upload\/0287a9b1424e-20250904.jpg\" alt=\"\" width=\"300\" class=\"md-img\" loading=\"lazy\"\/><\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h2 id=\"%E7%9B%B4%E9%9D%A2%E3%81%97%E3%81%A6%E3%81%84%E3%81%9F%E8%AA%B2%E9%A1%8C%E3%81%A8%E8%83%8C%E6%99%AF\" data-line=\"20\" class=\"code-line\">\n \u76f4\u9762\u3057\u3066\u3044\u305f\u8ab2\u984c\u3068\u80cc\u666f<\/h2>\n<p data-line=\"21\" class=\"code-line\">\u97f3\u58f0\u54c1\u8cea\u306b\u95a2\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u554f\u3044\u5408\u308f\u305b\u306e\u554f\u984c\u5207\u308a\u5206\u3051\u306e\u96e3\u3057\u3055\u3068\u8abf\u67fb\u306e\u96e3\u822a\u304c\u5927\u304d\u306a\u8ab2\u984c\u3067\u3057\u305f\u3002<br \/>\u305d\u306e\u4e2d\u3067\u3082\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u95a2\u3059\u308b\u554f\u3044\u5408\u308f\u305b\u304c\u5272\u5408\u3092\u5927\u304d\u304f\u5360\u3081\u3066\u304a\u308a\u3001\u6700\u3082\u539f\u56e0\u5207\u308a\u5206\u3051\u304c\u96e3\u3057\u3044\u90e8\u5206\u3067\u3057\u305f\u3002<\/p>\n<aside class=\"msg alert\"><span class=\"msg-symbol\">!<\/span><\/p>\n<div class=\"msg-content\">\n<ul data-line=\"25\" class=\"code-line\">\n<li data-line=\"25\" class=\"code-line\">\n<strong>\u539f\u56e0\u7279\u5b9a\u306e\u56f0\u96e3\u3055<\/strong>\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u306f\u6642\u9593\u3068\u3068\u3082\u306b\u5909\u5316\u3057\u3001\u8907\u5408\u7684\u306a\u8981\u7d20\u304c\u7d61\u307f\u5408\u3046<\/li>\n<li data-line=\"26\" class=\"code-line\">\n<strong>\u30b5\u30dd\u30fc\u30c8\u8ca0\u8377<\/strong>\uff1a\u540c\u69d8\u306b\u898b\u3048\u308b\u304c\u3001\u518d\u73fe\u6027\u306e\u306a\u3044\u554f\u3044\u5408\u308f\u305b\u304c\u7e70\u308a\u8fd4\u3057\u767a\u751f<\/li>\n<li data-line=\"27\" class=\"code-line\">\n<strong>\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u8abf\u67fb\u5de5\u6570<\/strong> : 1\u6b21\u5bfe\u5fdc\u3067\u306e\u554f\u984c\u5207\u308a\u5206\u3051\u304c\u96e3\u3057\u304f\u3001\u8abf\u67fb\u304c\u96e3\u822a\u3057\u304c\u3061<\/li>\n<\/ul>\n<\/div>\n<\/aside>\n<h2 id=\"twilio-preflight%E3%81%A8%E3%81%AF\" data-line=\"30\" class=\"code-line\">\n Twilio Preflight\u3068\u306f<\/h2>\n<p data-line=\"32\" class=\"code-line\">Twilio Preflight\u306f\u3001<a target=\"_blank\" href=\"https:\/\/www.twilio.com\/docs\/voice\/sdks\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Twilio Voice SDK<\/a>\u304c\u63d0\u4f9b\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u54c1\u8cea\u8a3a\u65ad\u6a5f\u80fd\u3067\u3059\u3002\u5b9f\u969b\u306e\u901a\u8a71\u3092\u884c\u3046\u524d\u306b\u3001\u4ee5\u4e0b\u306e\u6307\u6a19\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 id=\"%E6%B8%AC%E5%AE%9A%E3%81%95%E3%82%8C%E3%82%8B%E5%93%81%E8%B3%AA%E6%8C%87%E6%A8%99\" data-line=\"34\" class=\"code-line\">\n \u6e2c\u5b9a\u3055\u308c\u308b\u54c1\u8cea\u6307\u6a19<\/h3>\n<ul data-line=\"36\" class=\"code-line\">\n<li data-line=\"36\" class=\"code-line\">\n<strong>MOS (Mean Opinion Score)<\/strong>: \u97f3\u58f0\u54c1\u8cea\u306e\u7dcf\u5408\u8a55\u4fa1<\/li>\n<li data-line=\"37\" class=\"code-line\">\n<strong>RTT (Round Trip Time)<\/strong>: \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5fdc\u7b54\u6642\u9593<\/li>\n<li data-line=\"38\" class=\"code-line\">\n<strong>Jitter<\/strong>: \u901a\u4fe1\u306e\u3086\u3089\u304e<\/li>\n<li data-line=\"39\" class=\"code-line\">\n<strong>Packet Loss<\/strong>: \u30c7\u30fc\u30bf\u306e\u640d\u5931\u7387<\/li>\n<\/ul>\n<p data-line=\"41\" class=\"code-line\">\u3053\u308c\u3089\u306e\u6307\u6a19\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u73fe\u5728\u306e\u901a\u8a71\u74b0\u5883\u3092\u6570\u5024\u7684\u306b\u8a55\u4fa1\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 id=\"%E5%AE%9F%E8%A1%8C%E3%81%AB%E5%BF%85%E8%A6%81%E3%81%AA%E6%A7%8B%E6%88%90\" data-line=\"43\" class=\"code-line\">\n \u5b9f\u884c\u306b\u5fc5\u8981\u306a\u69cb\u6210<\/h3>\n<p data-line=\"45\" class=\"code-line\">Twilio Preflight\u306f\u5b9f\u969b\u306bTwilio\u30b5\u30fc\u30d0\u30fc\u3078\u306e<strong>\u30c6\u30b9\u30c8\u901a\u8a71\u3092\u5b9f\u884c<\/strong>\u3057\u3066\u54c1\u8cea\u3092\u6e2c\u5b9a\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4ee5\u4e0b\u306e2\u3064\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n<h4 id=\"1.-twiml-app%EF%BC%88%E9%8C%B2%E9%9F%B3%E3%83%BB%E5%86%8D%E7%94%9F%E3%81%AE%E3%82%A8%E3%83%B3%E3%83%89%E3%83%9D%E3%82%A4%E3%83%B3%E3%83%88%EF%BC%89\" data-line=\"47\" class=\"code-line\">\n 1. TwiML App\uff08\u9332\u97f3\u30fb\u518d\u751f\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\uff09<\/h4>\n<p data-line=\"49\" class=\"code-line\">Preflight\u306f\u6b21\u306e\u3088\u3046\u306a\u51e6\u7406\u3092\u5185\u90e8\u3067\u884c\u3044\u307e\u3059\uff1a<\/p>\n<ol data-line=\"51\" class=\"code-line\">\n<li data-line=\"51\" class=\"code-line\">\u30c6\u30b9\u30c8\u901a\u8a71\u3092\u767a\u4fe1<\/li>\n<li data-line=\"52\" class=\"code-line\">\u30de\u30a4\u30af\u304b\u3089<strong>\u9332\u97f3<\/strong>\n<\/li>\n<li data-line=\"53\" class=\"code-line\">Twilio\u5074\u3067<strong>\u518d\u751f<\/strong>\n<\/li>\n<li data-line=\"54\" class=\"code-line\">\u518d\u751f\u7d50\u679c\u3092\u89e3\u6790\u3057\u3001\u54c1\u8cea\u30ec\u30dd\u30fc\u30c8\u3092\u8fd4\u3059<\/li>\n<\/ol>\n<p data-line=\"56\" class=\"code-line\">\u3053\u306e\u9332\u97f3\u30fb\u518d\u751f\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306b \u5c02\u7528\u306e <strong>TwiML App<\/strong> \u3068 <strong>TwiML Bin<\/strong> \u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<aside class=\"msg message\"><span class=\"msg-symbol\">!<\/span><\/p>\n<div class=\"msg-content\">\n<p data-line=\"59\" class=\"code-line\">Preflight \u306f\u5185\u90e8\u3067 \u9332\u97f3 \u2192 \u518d\u751f \u3092\u884c\u3046\u305f\u3081\u3001<br \/>Twilio \u5074\u306b\u305d\u306e\u624b\u9806\u3092\u66f8\u3044\u305f TwiML \u3092\u7f6e\u3044\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p data-line=\"62\" class=\"code-line\">TwiML App\uff1aPreflight \u304c\u63a5\u7d9a\u3059\u308b\u767a\u4fe1\u5148<br \/>TwiML Bin\uff1a\u9332\u97f3\u30fb\u518d\u751f\u306e\u6307\u793a\uff08Record \/ Play\uff09\u3092\u66f8\u3044\u305f\u30b9\u30af\u30ea\u30d7\u30c8<\/p>\n<p data-line=\"65\" class=\"code-line\"><a target=\"_blank\" href=\"https:\/\/www.twilio.com\/docs\/voice\/twiml\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/www.twilio.com\/docs\/voice\/twiml<\/a><\/p>\n<\/div>\n<\/aside>\n<p data-line=\"68\" class=\"code-line\"><span class=\"embed-block zenn-embedded zenn-embedded-card\"><iframe id=\"zenn-embedded__df3a92c28ebc7\" src=\"https:\/\/embed.zenn.studio\/card#zenn-embedded__df3a92c28ebc7\" data-content=\"https%3A%2F%2Fwww.twilio.com%2Fdocs%2Fvoice%2Fsdks%2Fmobile-preflight-test%23create-a-twiml-application\" frameborder=\"0\" scrolling=\"no\" loading=\"lazy\"><\/iframe><\/span><a target=\"_blank\" href=\"https:\/\/www.twilio.com\/docs\/voice\/sdks\/mobile-preflight-test#create-a-twiml-application\" style=\"display:none\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/www.twilio.com\/docs\/voice\/sdks\/mobile-preflight-test#create-a-twiml-application<\/a><\/p>\n<h4 id=\"2.-twilio-access-token\" data-line=\"70\" class=\"code-line\">\n 2. Twilio Access Token<\/h4>\n<p data-line=\"72\" class=\"code-line\"><strong>Access Token\u306b\u5fc5\u8981\u306a\u6a29\u9650<\/strong>\uff1a<\/p>\n<ul data-line=\"73\" class=\"code-line\">\n<li data-line=\"73\" class=\"code-line\">\n<code>outgoingApplicationSid<\/code>: PreflightTest\u5c02\u7528\u306eTwiML App SID<\/li>\n<li data-line=\"74\" class=\"code-line\">\n<code>identity<\/code>: \u30e6\u30fc\u30b6\u30fc\u8b58\u5225\u5b50<\/li>\n<li data-line=\"75\" class=\"code-line\">\n<code>Voice Grant<\/code>: \u767a\u4fe1\u6a29\u9650\u306e\u307f\u3067OK\uff08<code>incomingAllow: false<\/code>\uff09<\/li>\n<\/ul>\n<p data-line=\"77\" class=\"code-line\"><span class=\"embed-block zenn-embedded zenn-embedded-card\"><iframe id=\"zenn-embedded__964f9361b78ed\" src=\"https:\/\/embed.zenn.studio\/card#zenn-embedded__964f9361b78ed\" data-content=\"https%3A%2F%2Fwww.twilio.com%2Fdocs%2Fiam%2Faccess-tokens%23create-an-access-token-for-voice\" frameborder=\"0\" scrolling=\"no\" loading=\"lazy\"><\/iframe><\/span><a target=\"_blank\" href=\"https:\/\/www.twilio.com\/docs\/iam\/access-tokens#create-an-access-token-for-voice\" style=\"display:none\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/www.twilio.com\/docs\/iam\/access-tokens#create-an-access-token-for-voice<\/a><\/p>\n<p data-line=\"79\" class=\"code-line\">\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u304b\u3089Preflight\u7528\u306e <strong>Twilio Access Token<\/strong> \u3092\u53d6\u5f97\u3057\u307e\u3059<\/p>\n<h3 id=\"%E5%93%81%E8%B3%AA%E6%B8%AC%E5%AE%9A%E3%81%AE%E8%A9%B3%E7%B4%B0\" data-line=\"81\" class=\"code-line\">\n \u54c1\u8cea\u6e2c\u5b9a\u306e\u8a73\u7d30<\/h3>\n<p data-line=\"83\" class=\"code-line\">Twilio\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3088\u308b\u3068\u3001\u54c1\u8cea\u8a55\u4fa1\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u57fa\u6e96\u3067\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n<p data-line=\"85\" class=\"code-line\"><strong>callQuality\uff08MOS\u57fa\u6e96\uff09<\/strong>\uff1a<\/p>\n<ul data-line=\"86\" class=\"code-line\">\n<li data-line=\"86\" class=\"code-line\">\n<strong>0<\/strong>: \u5e73\u5747MOS\u304c4.2\u8d85\uff08\u512a\u79c0\uff09<\/li>\n<li data-line=\"87\" class=\"code-line\">\n<strong>1<\/strong>: \u5e73\u5747MOS\u304c4.1-4.2\uff08\u826f\u597d\uff09<\/li>\n<li data-line=\"88\" class=\"code-line\">\n<strong>2<\/strong>: \u5e73\u5747MOS\u304c3.7-4.0\uff08\u826f\u597d\uff09<\/li>\n<li data-line=\"89\" class=\"code-line\">\n<strong>3<\/strong>: \u5e73\u5747MOS\u304c3.1-3.6\uff08\u6a19\u6e96\uff09<\/li>\n<li data-line=\"90\" class=\"code-line\">\n<strong>4<\/strong>: \u5e73\u5747MOS\u304c3.0\u4ee5\u4e0b\uff08\u4e0d\u5b89\u5b9a\uff09<\/li>\n<\/ul>\n<p data-line=\"92\" class=\"code-line\">\u3053\u3046\u3044\u3063\u305f\u516c\u5f0f\u306e\u57fa\u6e96\u306b\u57fa\u3065\u304d\u3001\u5b9f\u88c5\u30b3\u30fc\u30c9\u3067\u54c1\u8cea\u5224\u5b9a\u30ed\u30b8\u30c3\u30af\u3092\u7dcf\u5408\u7684\u306b\u8a55\u4fa1\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p data-line=\"94\" class=\"code-line\">Preflight \u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u751f\u30c7\u30fc\u30bf\u3092\u8fd4\u3057\u307e\u3059\u304c\u3001\u305d\u308c\u3092\u305d\u306e\u307e\u307e\u8868\u793a\u3057\u3066\u3082\u30e6\u30fc\u30b6\u30fc\u306b\u306f\u7406\u89e3\u3067\u304d\u307e\u305b\u3093\u3002<br style=\"display:none\"\/><br \/>\n<span class=\"embed-block zenn-embedded zenn-embedded-card\"><iframe id=\"zenn-embedded__cc28410abac86\" src=\"https:\/\/embed.zenn.studio\/card#zenn-embedded__cc28410abac86\" data-content=\"https%3A%2F%2Fwww.twilio.com%2Fdocs%2Fvoice%2Fsdks%2Fmobile-preflight-test%23report\" frameborder=\"0\" scrolling=\"no\" loading=\"lazy\"><\/iframe><\/span><a target=\"_blank\" href=\"https:\/\/www.twilio.com\/docs\/voice\/sdks\/mobile-preflight-test#report\" style=\"display:none\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/www.twilio.com\/docs\/voice\/sdks\/mobile-preflight-test#report<\/a><\/p>\n<p data-line=\"97\" class=\"code-line\">\u305d\u3053\u3067\u3001\u5404\u6307\u6a19\u3092\u300c\u3069\u306e\u7a0b\u5ea6\u306e\u72b6\u614b\u306a\u306e\u304b\u300d\u3092\u5224\u5b9a\u3059\u308b\u305f\u3081\u306e\u54c1\u8cea\u8a55\u4fa1\u3092\u307e\u3068\u3081\u4e0a\u3052\u3066\u8868\u73fe\u3057\u307e\u3059\u3002<\/p>\n<h2 id=\"%E5%93%81%E8%B3%AA%E8%A9%95%E4%BE%A1%E3%81%AE%E3%83%AD%E3%82%B8%E3%83%83%E3%82%AF\" data-line=\"99\" class=\"code-line\">\n \u54c1\u8cea\u8a55\u4fa1\u306e\u30ed\u30b8\u30c3\u30af<\/h2>\n<div class=\"s_table\"><table data-line=\"101\" class=\"code-line\">\n<thead data-line=\"101\" class=\"code-line\">\n<tr data-line=\"101\" class=\"code-line\">\n<th>\u6307\u6a19<\/th>\n<th>\u512a\u79c0<\/th>\n<th>\u826f\u597d<\/th>\n<th>\u6a19\u6e96<\/th>\n<th>\u4e0d\u5b89\u5b9a<\/th>\n<\/tr>\n<\/thead>\n<tbody data-line=\"103\" class=\"code-line\">\n<tr data-line=\"103\" class=\"code-line\">\n<td><strong>MOS<\/strong><\/td>\n<td>&gt; 4.2<\/td>\n<td>4.1\u20134.2<\/td>\n<td>3.1\u20134.0<\/td>\n<td>\n<\/td>\n<\/tr>\n<tr data-line=\"104\" class=\"code-line\">\n<td><strong>RTT<\/strong><\/td>\n<td>\u2264 100ms<\/td>\n<td>\u2264 150ms<\/td>\n<td>\u2264 200ms<\/td>\n<td>&gt; 200ms<\/td>\n<\/tr>\n<tr data-line=\"105\" class=\"code-line\">\n<td><strong>Jitter<\/strong><\/td>\n<td>\u2264 15ms<\/td>\n<td>\u2264 20ms<\/td>\n<td>\u2264 30ms<\/td>\n<td>&gt; 30ms<\/td>\n<\/tr>\n<tr data-line=\"106\" class=\"code-line\">\n<td><strong>Packet Loss<\/strong><\/td>\n<td>\u2264 1%<\/td>\n<td>\u2264 2%<\/td>\n<td>\u2264 3%<\/td>\n<td>&gt; 3%<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<aside class=\"msg message\"><span class=\"msg-symbol\">!<\/span><\/p>\n<div class=\"msg-content\">\n<ul data-line=\"109\" class=\"code-line\">\n<li data-line=\"109\" class=\"code-line\">MOS \/ RTT \/ Jitter \/ Packet Loss \u306e 4 \u6307\u6a19\u3092\u8a55\u4fa1<\/li>\n<li data-line=\"110\" class=\"code-line\">\u3044\u305a\u308c\u304b 1 \u3064\u3067\u3082\u300c\u4e0d\u5b89\u5b9a\u300d\u306a\u3089\u7dcf\u5408\u8a55\u4fa1\u306f NG<\/li>\n<li data-line=\"111\" class=\"code-line\">\u30e6\u30fc\u30b6\u30fc\u4f53\u611f\u306b\u5408\u308f\u305b\u3001\u201c\u6700\u3082\u60aa\u3044\u6307\u6a19\u201d \u3092\u7dcf\u5408\u7d50\u679c\u306b\u63a1\u7528<\/li>\n<li data-line=\"112\" class=\"code-line\">\u4e0d\u5b89\u5b9a\u9805\u76ee\u306b\u5fdc\u3058\u3066\u8aac\u660e\u6587\u3092\u51fa\u3057\u5206\u3051\u3001\u8868\u73fe \u3092\u6700\u9069\u5316<\/li>\n<\/ul>\n<\/div>\n<\/aside>\n<p data-line=\"115\" class=\"code-line\">\u3059\u3079\u3066\u304c\u6a19\u6e96\u4ee5\u4e0a\u3067\u300c\u54c1\u8cea\u306f\u6b63\u5e38\u300d\u306b\u306a\u308a\u3001\u3069\u308c\u304b 1 \u3064\u3067\u3082\u300c\u4e0d\u5b89\u5b9a\u300d\u306b\u8a72\u5f53 \u2192\u300c\u54c1\u8cea\u306b\u554f\u984c\u3042\u308a\u300d\u306b\u306a\u308a\u307e\u3059<\/p>\n<p data-line=\"117\" class=\"code-line\">\u30e6\u30fc\u30b6\u30fc\u4f53\u611f\u306b\u8fd1\u3065\u3051\u308b\u305f\u3081\u3001\u6700\u3082\u60aa\u3044\u6307\u6a19\u3092\u7dcf\u5408\u7d50\u679c\u306b\u63a1\u7528\u3057\u3001\u60aa\u3044\u6307\u6a19\u306b\u4f55\u304c\u5165\u3063\u3066\u304d\u305f\u304b\u3067\u30e6\u30fc\u30b6\u30fc\u306b\u8868\u793a\u3059\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u51fa\u3057\u5206\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 id=\"%E5%93%81%E8%B3%AA%E5%88%A4%E5%AE%9A%E3%81%AE%E5%AE%9F%E8%A3%85\" data-line=\"119\" class=\"code-line\">\n \u54c1\u8cea\u5224\u5b9a\u306e\u5b9f\u88c5<\/h3>\n<p data-line=\"120\" class=\"code-line\">\u30a2\u30a4\u30d6\u30ea\u30fc\u30a2\u30d7\u30ea\u306fUI\/UX\u304cFlutter\u3067\u3001Twilio\u3068\u306e\u3084\u308a\u53d6\u308a\u306fSDK\u306e\u30cd\u30a4\u30c6\u30a3\u30d6\u90e8\u5206\u304c\u62c5\u5f53\u3057\u307e\u3059\u3002<\/p>\n<div class=\"code-block-container\">\n<p><span class=\"code-block-filename\"> QualityInfo.dart<\/span><\/p>\n<pre class=\"language-dart\"><code class=\"language-dart code-line\" data-line=\"122\">\nsealed <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">QualityInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token class-name\">Color<\/span> <span class=\"token keyword\">get<\/span> color<span class=\"token punctuation\">;<\/span>\n  <span class=\"token class-name\">String<\/span> <span class=\"token keyword\">get<\/span> label<span class=\"token punctuation\">;<\/span>\n\n  bool <span class=\"token keyword\">get<\/span> hasProblem <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n      <span class=\"token class-name\">PoorQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span>\n      _ <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ExcellentQuality<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">ExcellentQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token metadata function\">@override<\/span>\n  <span class=\"token class-name\">Color<\/span> <span class=\"token keyword\">get<\/span> color <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token class-name\">IVRyColors<\/span><span class=\"token punctuation\">.<\/span>preflightTextGreen<span class=\"token punctuation\">;<\/span>\n  <span class=\"token metadata function\">@override<\/span>\n  <span class=\"token class-name\">String<\/span> <span class=\"token keyword\">get<\/span> label <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u512a\u79c0'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">GoodQuality<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">GoodQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token metadata function\">@override<\/span>\n  <span class=\"token class-name\">Color<\/span> <span class=\"token keyword\">get<\/span> color <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token class-name\">IVRyColors<\/span><span class=\"token punctuation\">.<\/span>preflightTextGreen<span class=\"token punctuation\">;<\/span>\n  <span class=\"token metadata function\">@override<\/span>\n  <span class=\"token class-name\">String<\/span> <span class=\"token keyword\">get<\/span> label <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u826f\u597d'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">FairQuality<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">FairQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token metadata function\">@override<\/span>\n  <span class=\"token class-name\">Color<\/span> <span class=\"token keyword\">get<\/span> color <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token class-name\">IVRyColors<\/span><span class=\"token punctuation\">.<\/span>preflightTextGreen<span class=\"token punctuation\">;<\/span>\n  <span class=\"token metadata function\">@override<\/span>\n  <span class=\"token class-name\">String<\/span> <span class=\"token keyword\">get<\/span> label <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u6a19\u6e96'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PoorQuality<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">PoorQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token metadata function\">@override<\/span>\n  <span class=\"token class-name\">Color<\/span> <span class=\"token keyword\">get<\/span> color <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token class-name\">IVRyColors<\/span><span class=\"token punctuation\">.<\/span>preflightTextRed<span class=\"token punctuation\">;<\/span>\n  <span class=\"token metadata function\">@override<\/span>\n  <span class=\"token class-name\">String<\/span> <span class=\"token keyword\">get<\/span> label <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u4e0d\u5b89\u5b9a'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n\n<span class=\"token keyword\">extension<\/span> <span class=\"token class-name\">QualityCalculation<\/span> <span class=\"token keyword\">on<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token punctuation\">{<\/span>\n  \n  \n  \n  \n  \n  \n  \n  <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token function\">fromMosCallQuality<\/span><span class=\"token punctuation\">(<\/span>num<span class=\"token operator\">?<\/span> mos<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>mos <span class=\"token operator\">==<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">UnknownQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>mos<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n      <span class=\"token operator\">&gt;=<\/span> <span class=\"token number\">4.2<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">ExcellentQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      <span class=\"token operator\">&gt;=<\/span> <span class=\"token number\">4.1<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">GoodQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> \n      <span class=\"token operator\">&gt;=<\/span> <span class=\"token number\">3.7<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">FairQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> \n      <span class=\"token operator\">&gt;=<\/span> <span class=\"token number\">3.1<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">FairQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> \n      _ <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">PoorQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> \n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  \n  \n  <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token function\">fromRtt<\/span><span class=\"token punctuation\">(<\/span>num<span class=\"token operator\">?<\/span> rtt<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>rtt <span class=\"token operator\">==<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">UnknownQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>rtt<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n      <span class=\"token operator\"> <span class=\"token number\">100<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">ExcellentQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      <span class=\"token operator\"> <span class=\"token number\">150<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">GoodQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      <span class=\"token operator\"> <span class=\"token number\">200<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">FairQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      _ <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">PoorQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  \n  \n  <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token function\">fromJitter<\/span><span class=\"token punctuation\">(<\/span>num<span class=\"token operator\">?<\/span> jitter<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>jitter <span class=\"token operator\">==<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">UnknownQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>jitter<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n      <span class=\"token operator\"> <span class=\"token number\">15<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">ExcellentQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      <span class=\"token operator\"> <span class=\"token number\">20<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">GoodQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      <span class=\"token operator\"> <span class=\"token number\">30<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">FairQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      _ <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">PoorQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  \n  \n  <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">QualityInfo<\/span> <span class=\"token function\">fromPacketLoss<\/span><span class=\"token punctuation\">(<\/span>num<span class=\"token operator\">?<\/span> packetLoss<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>packetLoss <span class=\"token operator\">==<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">UnavailableQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>packetLoss<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n      <span class=\"token operator\"> <span class=\"token number\">1<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">ExcellentQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      <span class=\"token operator\"> <span class=\"token number\">2<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">GoodQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      <span class=\"token operator\"> <span class=\"token number\">3<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">FairQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n      _ <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">PoorQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  \n  <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">OverallQualityInfo<\/span> <span class=\"token function\">determineOverall<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\"><span class=\"token class-name\">QualityInfo<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> qualities<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">final<\/span> worst <span class=\"token operator\">=<\/span> <span class=\"token function\">findWorst<\/span><span class=\"token punctuation\">(<\/span>qualities<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">return<\/span> worst<span class=\"token punctuation\">.<\/span>hasProblem\n        <span class=\"token operator\">?<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">ProblematicOverallQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\n        <span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">NormalOverallQuality<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/code><\/pre>\n<\/div>\n<h3 id=\"%E7%B5%90%E6%9E%9C%E3%83%87%E3%83%BC%E3%82%BF%E3%81%AE%E3%83%A2%E3%83%87%E3%83%AB\" data-line=\"240\" class=\"code-line\">\n \u7d50\u679c\u30c7\u30fc\u30bf\u306e\u30e2\u30c7\u30eb<\/h3>\n<p data-line=\"242\" class=\"code-line\">\u5b9f\u969b\u306e\u904b\u7528\u3067\u306f\u3001Twilio\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u304b\u3089\u54c1\u8cea\u6307\u6a19\u3092\u62bd\u51fa\u3059\u308b\u51e6\u7406\u3082\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"code-block-container\">\n<p><span class=\"code-block-filename\"> PreflightResultInfo.dart<\/span><\/p>\n<pre class=\"language-dart\"><code class=\"language-dart code-line\" data-line=\"244\">\n\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PreflightResultInfo<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token keyword\">final<\/span> double<span class=\"token operator\">?<\/span> mos<span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">final<\/span> double<span class=\"token operator\">?<\/span> rttMs<span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">final<\/span> double<span class=\"token operator\">?<\/span> jitterMs<span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">final<\/span> double<span class=\"token operator\">?<\/span> packetLossPercent<span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">QualityInfo<\/span> mosQuality<span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">QualityInfo<\/span> rttQuality<span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">QualityInfo<\/span> jitterQuality<span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">QualityInfo<\/span> packetLossQuality<span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">OverallQualityInfo<\/span> overallQuality<span class=\"token punctuation\">;<\/span>\n\n  <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">PreflightResultInfo<\/span> <span class=\"token function\">fromReport<\/span><span class=\"token punctuation\">(<\/span>\n    <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\"><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">dynamic<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token operator\">?<\/span> report<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\"><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">dynamic<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token operator\">?<\/span> fallbackEnv<span class=\"token punctuation\">,<\/span>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">final<\/span> stats <span class=\"token operator\">=<\/span> report<span class=\"token operator\">?<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'networkStats'<\/span><\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">as<\/span> <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\"><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">dynamic<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> rawWarnings <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">(<\/span>report<span class=\"token operator\">?<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'warnings'<\/span><\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">as<\/span> <span class=\"token class-name\">List<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">?<\/span><span class=\"token operator\">?<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n\n    \n    <span class=\"token keyword\">final<\/span> mos <span class=\"token operator\">=<\/span> <span class=\"token function\">_extractNumericAverage<\/span><span class=\"token punctuation\">(<\/span>stats<span class=\"token operator\">?<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'mos'<\/span><\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">toDouble<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> rtt <span class=\"token operator\">=<\/span> <span class=\"token function\">_extractNumericAverage<\/span><span class=\"token punctuation\">(<\/span>stats<span class=\"token operator\">?<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'rtt'<\/span><\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">toDouble<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> jitter <span class=\"token operator\">=<\/span> <span class=\"token function\">_extractNumericAverage<\/span><span class=\"token punctuation\">(<\/span>stats<span class=\"token operator\">?<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'jitter'<\/span><\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">toDouble<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> packetLoss <span class=\"token operator\">=<\/span> <span class=\"token function\">_extractPacketLossPercent<\/span><span class=\"token punctuation\">(<\/span>\n      networkStats<span class=\"token punctuation\">:<\/span> stats<span class=\"token punctuation\">,<\/span>\n      report<span class=\"token punctuation\">:<\/span> report<span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    \n    <span class=\"token keyword\">final<\/span> mosQ <span class=\"token operator\">=<\/span> <span class=\"token class-name\">QualityCalculation<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">fromMosCallQuality<\/span><span class=\"token punctuation\">(<\/span>mos<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> rttQ <span class=\"token operator\">=<\/span> <span class=\"token class-name\">QualityCalculation<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">fromRtt<\/span><span class=\"token punctuation\">(<\/span>rtt<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> jitterQ <span class=\"token operator\">=<\/span> <span class=\"token class-name\">QualityCalculation<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">fromJitter<\/span><span class=\"token punctuation\">(<\/span>jitter<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> lossQ <span class=\"token operator\">=<\/span> <span class=\"token class-name\">QualityCalculation<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">fromPacketLoss<\/span><span class=\"token punctuation\">(<\/span>packetLoss<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> overall <span class=\"token operator\">=<\/span> <span class=\"token class-name\">QualityCalculation<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">determineOverall<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>\n      mosQ<span class=\"token punctuation\">,<\/span>\n      rttQ<span class=\"token punctuation\">,<\/span>\n      jitterQ<span class=\"token punctuation\">,<\/span>\n      lossQ<span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">PreflightResultInfo<\/span><span class=\"token punctuation\">(<\/span>\n      mos<span class=\"token punctuation\">:<\/span> mos<span class=\"token punctuation\">,<\/span>\n      rttMs<span class=\"token punctuation\">:<\/span> rtt<span class=\"token punctuation\">,<\/span>\n      jitterMs<span class=\"token punctuation\">:<\/span> jitter<span class=\"token punctuation\">,<\/span>\n      packetLossPercent<span class=\"token punctuation\">:<\/span> packetLoss<span class=\"token punctuation\">,<\/span>\n      mosQuality<span class=\"token punctuation\">:<\/span> mosQ<span class=\"token punctuation\">,<\/span>\n      rttQuality<span class=\"token punctuation\">:<\/span> rttQ<span class=\"token punctuation\">,<\/span>\n      jitterQuality<span class=\"token punctuation\">:<\/span> jitterQ<span class=\"token punctuation\">,<\/span>\n      packetLossQuality<span class=\"token punctuation\">:<\/span> lossQ<span class=\"token punctuation\">,<\/span>\n      overallQuality<span class=\"token punctuation\">:<\/span> overall<span class=\"token punctuation\">,<\/span>\n      warnings<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\"><span class=\"token keyword\">dynamic<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span>rawWarnings<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n\ndouble<span class=\"token operator\">?<\/span> <span class=\"token function\">_extractPacketLossPercent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n  required <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\"><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">dynamic<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token operator\">?<\/span> networkStats<span class=\"token punctuation\">,<\/span>\n  required <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\"><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">dynamic<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token operator\">?<\/span> report<span class=\"token punctuation\">,<\/span>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token keyword\">final<\/span> fromStatsNum <span class=\"token operator\">=<\/span> <span class=\"token function\">_extractNumericAverage<\/span><span class=\"token punctuation\">(<\/span>networkStats<span class=\"token operator\">?<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'packetLoss'<\/span><\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">final<\/span> fromStats <span class=\"token operator\">=<\/span>\n      <span class=\"token function\">_normalizePercent<\/span><span class=\"token punctuation\">(<\/span>fromStatsNum <span class=\"token operator\">?<\/span><span class=\"token operator\">?<\/span> networkStats<span class=\"token operator\">?<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'packetLoss'<\/span><\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>fromStats <span class=\"token operator\">!=<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> fromStats<span class=\"token punctuation\">;<\/span>\n\n  \n  <span class=\"token keyword\">final<\/span> samples <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">(<\/span>report<span class=\"token operator\">?<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'statsSamples'<\/span><\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">as<\/span> <span class=\"token class-name\">List<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">)<\/span>\n      <span class=\"token operator\">?<\/span><span class=\"token punctuation\">.<\/span>whereType<span class=\"token generics\"><span class=\"token punctuation\"><span class=\"token class-name\">Map<\/span><span class=\"token punctuation\"><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">dynamic<\/span><span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\n      <span class=\"token punctuation\">.<\/span><span class=\"token function\">toList<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>samples <span class=\"token operator\">==<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">||<\/span> samples<span class=\"token punctuation\">.<\/span>isEmpty<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span>\n\n  <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> i <span class=\"token operator\">=<\/span> samples<span class=\"token punctuation\">.<\/span>length <span class=\"token operator\">-<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&gt;=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">--<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">final<\/span> value <span class=\"token operator\">=<\/span> <span class=\"token function\">_normalizePercent<\/span><span class=\"token punctuation\">(<\/span>samples<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">'packetsLostFraction'<\/span><\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>value <span class=\"token operator\">!=<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> value<span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/code><\/pre>\n<\/div>\n<h4 id=\"%E3%83%A6%E3%83%BC%E3%82%B6%E3%83%BC%E3%81%B8%E3%81%AE%E3%83%A1%E3%83%83%E3%82%BB%E3%83%BC%E3%82%B8%E3%83%B3%E3%82%B0\" data-line=\"326\" class=\"code-line\">\n \u30e6\u30fc\u30b6\u30fc\u3078\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u30f3\u30b0<\/h4>\n<p data-line=\"328\" class=\"code-line\">\u5b9f\u969b\u306e\u904b\u7528\u3067\u306f\u3001\u8907\u6570\u306e\u54c1\u8cea\u554f\u984c\u306e\u7d44\u307f\u5408\u308f\u305b\u30d1\u30bf\u30fc\u30f3\u3092\u8003\u616e\u3057\u305f\u3001\u3088\u308a\u8a73\u7d30\u306a\u30e1\u30c3\u30bb\u30fc\u30b8\u751f\u6210\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"code-block-container\">\n<p><span class=\"code-block-filename\"> PreflightResultInfoMessage.dart<\/span><\/p>\n<pre class=\"language-dart\"><code class=\"language-dart code-line\" data-line=\"330\"><span class=\"token keyword\">extension<\/span> <span class=\"token class-name\">PreflightResultInfoMessage<\/span> <span class=\"token keyword\">on<\/span> <span class=\"token class-name\">PreflightResultInfo<\/span> <span class=\"token punctuation\">{<\/span>\n  <span class=\"token class-name\">String<\/span> <span class=\"token keyword\">get<\/span> detailedMessage <span class=\"token punctuation\">{<\/span>\n    bool <span class=\"token function\">has<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">QualityInfo<\/span> q<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> q<span class=\"token punctuation\">.<\/span>hasProblem<span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">final<\/span> hasMos <span class=\"token operator\">=<\/span> <span class=\"token function\">has<\/span><span class=\"token punctuation\">(<\/span>mosQuality<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> hasRtt <span class=\"token operator\">=<\/span> <span class=\"token function\">has<\/span><span class=\"token punctuation\">(<\/span>rttQuality<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> hasJitter <span class=\"token operator\">=<\/span> <span class=\"token function\">has<\/span><span class=\"token punctuation\">(<\/span>jitterQuality<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">final<\/span> hasLoss <span class=\"token operator\">=<\/span> <span class=\"token function\">has<\/span><span class=\"token punctuation\">(<\/span>packetLossQuality<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">final<\/span> problemCount <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span>hasRtt<span class=\"token punctuation\">,<\/span> hasJitter<span class=\"token punctuation\">,<\/span> hasLoss<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">where<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>e<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=<\/span><span class=\"token operator\">&gt;<\/span> e<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>problemCount <span class=\"token operator\">==<\/span> <span class=\"token number\">0<\/span> <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token operator\">!<\/span>hasMos<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u30af\u30ea\u30a2\u306a\u97f3\u58f0\u901a\u8a71\u304c\u671f\u5f85\u3067\u304d\u307e\u3059'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>problemCount <span class=\"token operator\">==<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u901a\u4fe1\u304c\u8457\u3057\u304f\u4e0d\u5b89\u5b9a\u3067\u3001\u5b89\u5b9a\u3057\u305f\u4f1a\u8a71\u306f\u56f0\u96e3\u306a\u72b6\u614b\u3067\u3059\u3002'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>hasRtt <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token punctuation\">(<\/span>hasJitter <span class=\"token operator\">||<\/span> hasLoss<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n      <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u4f1a\u8a71\u304c\u9045\u308c\u304c\u3061\u3067\u3001\u304b\u3064\u97f3\u58f0\u3082\u9014\u5207\u308c\u3084\u3059\u3044\u306a\u3069\u3001\u7dcf\u5408\u7684\u306b\u54c1\u8cea\u304c\u4f4e\u4e0b\u3057\u3066\u3044\u307e\u3059\u3002'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>hasJitter <span class=\"token operator\">&amp;&amp;<\/span> hasLoss<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n      <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u97f3\u58f0\u304c\u983b\u7e41\u306b\u9014\u5207\u308c\u305f\u308a\u4e71\u308c\u305f\u308a\u3059\u308b\u306a\u3069\u3001\u901a\u4fe1\u304c\u975e\u5e38\u306b\u4e0d\u5b89\u5b9a\u3067\u3059\u3002'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>hasRtt<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u4f1a\u8a71\u306b\u9045\u5ef6\uff08\u30bf\u30a4\u30e0\u30e9\u30b0\uff09\u304c\u767a\u751f\u3057\u3084\u3059\u3044\u72b6\u614b\u3067\u3059\u3002'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>hasJitter<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u97f3\u58f0\u304c\u9707\u3048\u305f\u308a\u3001\u9014\u5207\u308c\u9014\u5207\u308c\u306b\u306a\u3063\u305f\u308a\u3059\u308b\u539f\u56e0\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>hasLoss<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u97f3\u58f0\u306e\u4e00\u90e8\u304c\u6b20\u3051\u3066\u3001\u7121\u97f3\u306b\u306a\u308a\u3084\u3059\u3044\u72b6\u614b\u3067\u3059\u3002'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>hasMos<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u97f3\u58f0\u54c1\u8cea\u305d\u306e\u3082\u306e\u304c\u7dcf\u5408\u7684\u306b\u4f4e\u4e0b\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">'\u901a\u8a71\u54c1\u8cea\u306f\u826f\u597d\u3067\u3059'<\/span><\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n<\/div>\n<h3 id=\"%E3%83%8D%E3%82%A4%E3%83%86%E3%82%A3%E3%83%96%E5%AE%9F%E8%A3%85\" data-line=\"360\" class=\"code-line\">\n \u30cd\u30a4\u30c6\u30a3\u30d6\u5b9f\u88c5<\/h3>\n<p data-line=\"361\" class=\"code-line\">Preflight \u306e\u5b9f\u884c\u81ea\u4f53\u306fiOS\/Android\u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u5185\u88fdSDK\u5074\u3067\u884c\u306a\u3063\u3066\u304a\u308a\u3001\u305d\u3061\u3089\u306fTwilio Voice SDK \u306b\u30b5\u30f3\u30d7\u30eb\u304c\u3042\u308b\u306e\u3067\u3001\u30cd\u30a4\u30c6\u30a3\u30d6\u90e8\u5206\u306e\u8a73\u7d30\u5b9f\u88c5\u306f\u7701\u7565\u3057\u307e\u3059\u3002<\/p>\n<p data-line=\"363\" class=\"code-line\">\u5b9f\u969b\u306e\u5b9f\u88c5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001Twilio \u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u30b5\u30f3\u30d7\u30eb\u304c\u6700\u3082\u308f\u304b\u308a\u3084\u3059\u3044\u3067\u3059\uff1a<\/p>\n<p data-line=\"365\" class=\"code-line\"><span class=\"embed-block zenn-embedded zenn-embedded-card\"><iframe id=\"zenn-embedded__2d674eee0163\" src=\"https:\/\/embed.zenn.studio\/card#zenn-embedded__2d674eee0163\" data-content=\"https%3A%2F%2Fwww.twilio.com%2Fdocs%2Fvoice%2Fsdks%2Fmobile-preflight-test%23run-a-preflighttest\" frameborder=\"0\" scrolling=\"no\" loading=\"lazy\"><\/iframe><\/span><a target=\"_blank\" href=\"https:\/\/www.twilio.com\/docs\/voice\/sdks\/mobile-preflight-test#run-a-preflighttest\" style=\"display:none\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/www.twilio.com\/docs\/voice\/sdks\/mobile-preflight-test#run-a-preflighttest<\/a><\/p>\n<div class=\"code-block-container\">\n<p><span class=\"code-block-filename\"> Android Sample<\/span><\/p>\n<pre class=\"language-kotlin\"><code class=\"language-kotlin code-line\" data-line=\"367\"><span class=\"token keyword\">class<\/span> MyPreflightObserver implements PreflightTest<span class=\"token punctuation\">.<\/span><span class=\"token function\">Listener<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token annotation builtin\">@Override<\/span>\n    <span class=\"token keyword\">public<\/span> void <span class=\"token function\">onPreflightConnected<\/span><span class=\"token punctuation\">(<\/span><span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> PreflightTest preflightTest<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        \n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token annotation builtin\">@Override<\/span>\n    <span class=\"token keyword\">public<\/span> void <span class=\"token function\">onPreflightCompleted<\/span><span class=\"token punctuation\">(<\/span>\n    <span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> PreflightTest preflightTest<span class=\"token punctuation\">,<\/span> <span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> JSONObject report<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        \n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token annotation builtin\">@Override<\/span>\n    <span class=\"token keyword\">public<\/span> void <span class=\"token function\">onPreflightFailed<\/span><span class=\"token punctuation\">(<\/span>\n    <span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> PreflightTest preflightTest<span class=\"token punctuation\">,<\/span> <span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> CallException error<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        \n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token annotation builtin\">@Override<\/span>\n    <span class=\"token keyword\">public<\/span> void <span class=\"token function\">onPreflightWarning<\/span><span class=\"token punctuation\">(<\/span>\n    <span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> PreflightTest preflightTest<span class=\"token punctuation\">,<\/span>\n    <span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> Set<span class=\"token operator\">Call<span class=\"token punctuation\">.<\/span>CallQualityWarning<span class=\"token operator\">&gt;<\/span> currentWarnings<span class=\"token punctuation\">,<\/span>\n    <span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> Set<span class=\"token operator\">Call<span class=\"token punctuation\">.<\/span>CallQualityWarning<span class=\"token operator\">&gt;<\/span> previousWarnings<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        \n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token annotation builtin\">@Override<\/span>\n    <span class=\"token keyword\">public<\/span> void <span class=\"token function\">onPreflightSample<\/span><span class=\"token punctuation\">(<\/span>\n    <span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> PreflightTest preflightTest<span class=\"token punctuation\">,<\/span> <span class=\"token annotation builtin\">@NonNull<\/span> <span class=\"token keyword\">final<\/span> JSONObject sample<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        \n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/span><\/span><\/code><\/pre>\n<\/div>\n<div class=\"code-block-container\">\n<p><span class=\"code-block-filename\"> iOS sample<\/span><\/p>\n<pre class=\"language-swift\"><code class=\"language-swift code-line\" data-line=\"403\"><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ViewController<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">UIViewController<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">var<\/span> preflightTest<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">PreflightTest<\/span><span class=\"token operator\">?<\/span> <span class=\"token operator\">=<\/span> <span class=\"token nil constant\">nil<\/span>\n\n    <span class=\"token keyword\">func<\/span> <span class=\"token function-definition function\">performPreflight<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">let<\/span> preflightOptions <span class=\"token operator\">=<\/span> <span class=\"token class-name\">PreflightOptions<\/span><span class=\"token punctuation\">(<\/span>accessToken<span class=\"token punctuation\">:<\/span> accessToken<span class=\"token punctuation\">,<\/span> block<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span> builder <span class=\"token keyword\">in<\/span>\n            builder<span class=\"token punctuation\">.<\/span>preferredAudioCodecs <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token class-name\">OpusCodec<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span>\n\n        preflightTest <span class=\"token operator\">=<\/span> <span class=\"token class-name\">TwilioVoiceSDK<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">runPreflightTest<\/span><span class=\"token punctuation\">(<\/span>options<span class=\"token punctuation\">:<\/span> preflightOptions<span class=\"token punctuation\">,<\/span> delegate<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">self<\/span><span class=\"token punctuation\">)<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">extension<\/span> <span class=\"token class-name\">ViewController<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">PreflightDelegate<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">func<\/span> <span class=\"token function-definition function\">preflightDidComplete<\/span><span class=\"token punctuation\">(<\/span>preflightTest<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">PreflightTest<\/span><span class=\"token punctuation\">,<\/span> report<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">PreflightReport<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        \n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token keyword\">func<\/span> <span class=\"token function-definition function\">preflightDidFail<\/span><span class=\"token punctuation\">(<\/span>preflightTest<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">PreflightTest<\/span><span class=\"token punctuation\">,<\/span> error<span class=\"token punctuation\">:<\/span> any <span class=\"token class-name\">Error<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    \n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token keyword\">func<\/span> <span class=\"token function-definition function\">preflightDidConnect<\/span><span class=\"token punctuation\">(<\/span>preflightTest<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">PreflightTest<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    \n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n<\/div>\n<h2 id=\"%E5%8F%82%E8%80%83%E8%B3%87%E6%96%99\" data-line=\"431\" class=\"code-line\">\n \u53c2\u8003\u8cc7\u6599<\/h2>\n<h3 id=\"twilio%E5%85%AC%E5%BC%8F%E3%83%89%E3%82%AD%E3%83%A5%E3%83%A1%E3%83%B3%E3%83%88\" data-line=\"433\" class=\"code-line\">\n Twilio\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/h3>\n<h2 id=\"%E3%81%BE%E3%81%A8%E3%82%81\" data-line=\"437\" class=\"code-line\">\n \u307e\u3068\u3081<\/h2>\n<p data-line=\"439\" class=\"code-line\">Twilio Preflight\u3092\u6d3b\u7528\u3057\u305f\u97f3\u58f0\u54c1\u8cea\u8a3a\u65ad\u6a5f\u80fd\u306b\u3088\u308a\u3001\u4ee5\u4e0b\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<ul data-line=\"441\" class=\"code-line\">\n<li data-line=\"441\" class=\"code-line\">\n<strong>\u554f\u984c\u306e\u4e8b\u524d\u767a\u898b<\/strong>\uff1a\u30e6\u30fc\u30b6\u30fc\u81ea\u8eab\u306b\u3088\u308b\u54c1\u8cea\u8a3a\u65ad<\/li>\n<li data-line=\"442\" class=\"code-line\">\n<strong>\u30b5\u30dd\u30fc\u30c8\u52b9\u7387\u5316<\/strong>\uff1a\u5177\u4f53\u7684\u306a\u30c7\u30fc\u30bf\u306b\u57fa\u3065\u304f\u554f\u984c\u89e3\u6c7a\u3001Sales\u3084Customer Support\u3078\u554f\u3044\u5408\u308f\u305b\u6642\u70b9\u3067\u554f\u984c\u306e\u5207\u308a\u5206\u3051<\/li>\n<li data-line=\"443\" class=\"code-line\">\n<strong>\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u5411\u4e0a<\/strong>\uff1a\u900f\u660e\u6027\u306e\u9ad8\u3044\u60c5\u5831\u306e\u63d0\u4f9b<\/li>\n<\/ul>\n<p data-line=\"445\" class=\"code-line\">\u54c1\u8cea\u5224\u5b9a\u30ed\u30b8\u30c3\u30af\u306f\u3001Twilio\u306e\u57fa\u6e96\u3092\u30d9\u30fc\u30b9\u306b\u201c\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u610f\u5473\u306e\u3042\u308b\u60c5\u5831\u201d\u306b\u306a\u308b\u3088\u3046\u8abf\u6574\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\u6570\u5b57\u3092\u898b\u305b\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u76f4\u9762\u3059\u308b\u72b6\u6cc1\u3092\u7406\u89e3\u3067\u304d\u308b\u8868\u73fe\u306b\u3059\u308b\u3053\u3068\u304c\u5927\u5207\u3060\u3068\u611f\u3058\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"we-are-hiring!\" data-line=\"448\" class=\"code-line\">\n We are hiring!<\/h2>\n<p data-line=\"449\" class=\"code-line\">IVRy\u3067\u306f\u300c\u30a4\u30d9\u30f3\u30c8\u3084\u6700\u65b0\u30cb\u30e5\u30fc\u30b9\u3001\u52df\u96c6\u30dd\u30b8\u30b7\u30e7\u30f3\u306e\u60c5\u5831\u3092\u53d7\u3051\u53d6\u308a\u305f\u3044\u300d\u300c\u4f1a\u793e\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8a71\u3092\u805e\u3044\u3066\u307f\u305f\u3044\u300d\u3068\u3044\u3063\u305f\u65b9\u306b\u5411\u3051\u3066\u3001\u30ad\u30e3\u30ea\u30a2\u767b\u9332\u3084\u30ab\u30b8\u30e5\u30a2\u30eb\u9762\u8ac7\u306e\u6a5f\u4f1a\u3092\u3054\u7528\u610f\u3057\u3066\u3044\u307e\u3059\u3002\u3054\u8208\u5473\u3092\u304a\u6301\u3061\u3044\u305f\u3060\u3051\u305f\u65b9\u306f\u3001\u305c\u3072\u4ee5\u4e0b\u306e\u30da\u30fc\u30b8\u3088\u308a\u3054\u767b\u9332\u30fb\u304a\u7533\u3057\u8fbc\u307f\u304f\u3060\u3055\u3044\u3002<br style=\"display:none\"\/><br \/>\n<span class=\"embed-block zenn-embedded zenn-embedded-card\"><iframe id=\"zenn-embedded__7987913191dcf\" src=\"https:\/\/embed.zenn.studio\/card#zenn-embedded__7987913191dcf\" data-content=\"https%3A%2F%2Fivry-jp.notion.site%2F209eea80adae800483a9d6b239281f1b\" frameborder=\"0\" scrolling=\"no\" loading=\"lazy\"><\/iframe><\/span><a target=\"_blank\" href=\"https:\/\/ivry-jp.notion.site\/209eea80adae800483a9d6b239281f1b\" style=\"display:none\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/ivry-jp.notion.site\/209eea80adae800483a9d6b239281f1b<\/a><\/p>\n<\/div>\n\n<br \/><a href=\"https:\/\/zenn.dev\/ivry\/articles\/f275cb6a125e8e\">\u5143\u306e\u8a18\u4e8b\u3092\u78ba\u8a8d\u3059\u308b <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"\u306f\u3058\u3081\u306b \u3053\u3093\u306b\u3061\u306f\uff01\u682a\u5f0f\u4f1a\u793eIVRy \u3067\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u3057\u3066\u3044\u308btsutou\u3067\u3059\u3002 VoIP\u3067\u97f3\u58f0\u901a\u8a71\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u97f3\u58f0\u901a\u8a71\u30a2\u30d7\u30ea\u306b\u304a\u3044\u3066\u300c\u97f3\u58f0\u304c\u805e\u3053\u3048\u306a\u3044\u300d\u300c\u9014\u5207\u308c\u308b\u300d\u3068\u3044\u3063\u305f\u30e6\u30fc\u30b6\u30fc\u554f\u3044\u5408\u308f\u305b\u306f\u3001\u30b5\u30dd\u30fc\u30c8\u30c1 [&hellip;]","protected":false},"author":1,"featured_media":23258,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-23257","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company-tec"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Twilio Preflight\u3067\u901a\u8a71\u54c1\u8cea\u3092 &quot;\u8a3a\u65ad&quot; \u3059\u308b - \u30dd\u30b1\u30b3\u30f3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zenn.dev\/ivry\/articles\/f275cb6a125e8e\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Twilio Preflight\u3067\u901a\u8a71\u54c1\u8cea\u3092 &quot;\u8a3a\u65ad&quot; \u3059\u308b - \u30dd\u30b1\u30b3\u30f3\" \/>\n<meta property=\"og:description\" content=\"\u306f\u3058\u3081\u306b \u3053\u3093\u306b\u3061\u306f\uff01\u682a\u5f0f\u4f1a\u793eIVRy \u3067\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u3057\u3066\u3044\u308btsutou\u3067\u3059\u3002 VoIP\u3067\u97f3\u58f0\u901a\u8a71\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u97f3\u58f0\u901a\u8a71\u30a2\u30d7\u30ea\u306b\u304a\u3044\u3066\u300c\u97f3\u58f0\u304c\u805e\u3053\u3048\u306a\u3044\u300d\u300c\u9014\u5207\u308c\u308b\u300d\u3068\u3044\u3063\u305f\u30e6\u30fc\u30b6\u30fc\u554f\u3044\u5408\u308f\u305b\u306f\u3001\u30b5\u30dd\u30fc\u30c8\u30c1 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zenn.dev\/ivry\/articles\/f275cb6a125e8e\" \/>\n<meta property=\"og:site_name\" content=\"\u30dd\u30b1\u30b3\u30f3\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-11T18:07:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pokecon.jp\/job\/wp-content\/uploads\/2025\/11\/1762884456_og-base-w1200-v2.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"info@pokecon.jp\" 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