<!DOCTYPE html> <html class=""> <head> <meta charset="utf-8"> <title>phone.checkGroupCall</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta property="description" content="Check whether the group call Server Forwarding Unit is currently receiving the streams with the specified WebRTC source IDs. Returns an intersection of the source IDs specified in sources, and the source IDs currently being forwarded by the SFU."> <meta property="og:title" content="phone.checkGroupCall"> <meta property="og:image" content=""> <meta property="og:description" content="Check whether the group call Server Forwarding Unit is currently receiving the streams with the specified WebRTC source IDs. Returns an intersection of the source IDs specified in sources, and the source IDs currently being forwarded by the SFU."> <link rel="icon" type="image/svg+xml" href="/img/website_icon.svg?4"> <link rel="apple-touch-icon" sizes="180x180" href="/img/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="/img/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="/img/favicon-16x16.png"> <link rel="alternate icon" href="/img/favicon.ico" type="image/x-icon" /> <link href="/css/bootstrap.min.css?3" rel="stylesheet"> <link href="/css/telegram.css?236" rel="stylesheet" media="screen"> <style> </style> </head> <body class="preload"> <div class="dev_page_wrap"> <div class="dev_page_head navbar navbar-static-top navbar-tg"> <div class="navbar-inner"> <div class="container clearfix"> <ul class="nav navbar-nav navbar-right hidden-xs"><li class="navbar-twitter"><a href="https://twitter.com/telegram" target="_blank" data-track="Follow/Twitter" 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call Server Forwarding Unit is currently receiving the streams with the specified WebRTC source IDs.<br> Returns an intersection of the source IDs specified in <code>sources</code>, and the source IDs currently being forwarded by the SFU.</p> <p><div class="clearfix"> <ul class="dev_layer_select slightly-pull-right nav nav-pills"> <li class="dropdown"> <a class="dropdown-toggle" onclick="return dropdownClick(this, event)" href="#">Layer 158 <b class="caret"></b></a> <ul class="dropdown-menu"> <li><a href="?layer=1">1 – Base layer</a></li><li><a href="?layer=2">2 – New userpic notifications</a></li><li><a href="?layer=3">3 – Send message can trigger link change</a></li><li><a href="?layer=4">4 – Check-in chats</a></li><li><a href="?layer=5">5 – Localized SMS, localized notifications</a></li><li><a href="?layer=6">6 – Foursquare integration</a></li><li><a href="?layer=7">7 – Added wallPaperSolid</a></li><li><a href="?layer=8">8 – Added end-to-end encryption</a></li><li><a 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href="/method/phone.checkGroupCall" class="current_page_link" >phone.checkGroupCall</a>#b59cf977 call:<a href="/type/InputGroupCall" >InputGroupCall</a> sources:<a href="/type/Vector%20t" >Vector</a><<a href="/type/int" >int</a>> = <a href="/type/Vector%20t" >Vector</a><<a href="/type/int" >int</a>>;</code></pre></p> <h3><a class="anchor" href="#parameters" id="parameters" name="parameters"><i class="anchor-icon"></i></a>Parameters</h3> <table class="table"> <thead> <tr> <th>Name</th> <th style="text-align: center;">Type</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td><strong>call</strong></td> <td style="text-align: center;"><a href="/type/InputGroupCall">InputGroupCall</a></td> <td>Group call</td> </tr> <tr> <td><strong>sources</strong></td> <td style="text-align: center;"><a href="/type/Vector%20t">Vector</a><<a href="/type/int">int</a>></td> <td>Source IDs</td> </tr> </tbody> </table> <h3><a class="anchor" href="#result" id="result" name="result"><i class="anchor-icon"></i></a>Result</h3> <p><a href="/type/Vector%20t">Vector</a><<a href="/type/int">int</a>></p> <h3><a class="anchor" href="#possible-errors" id="possible-errors" name="possible-errors"><i class="anchor-icon"></i></a>Possible errors</h3> <table class="table"> <thead> <tr> <th>Code</th> <th>Type</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td>400</td> <td>GROUPCALL_JOIN_MISSING</td> <td>You haven't joined this group call.</td> </tr> </tbody> </table></div> </div> </div> </div> <div class="footer_wrap"> <div class="footer_columns_wrap footer_desktop"> <div class="footer_column footer_column_telegram"> <h5>Telegram</h5> <div class="footer_telegram_description"></div> Telegram is a cloud-based mobile and desktop messaging app with a focus on security and speed. </div> <div class="footer_column"> <h5><a href="//telegram.org/faq">About</a></h5> <ul> <li><a href="//telegram.org/faq">FAQ</a></li> <li><a href="//telegram.org/privacy">Privacy</a></li> <li><a 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