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<h2><a href="https://wiki.asterisk.org/wiki/display/TOP/Built+In+Supported+Media+Formats">Built In Supported Media Formats</a></h2>
<h4>Page <b>edited</b> by <a href="https://wiki.asterisk.org/wiki/display/~beagles">Brent Eagles</a>
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<h4>Changes (0)</h4>
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</div> <h4>Full Content</h4>
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<h2><a name="BuiltInSupportedMediaFormats-UlawMediaFormat"></a>Ulaw Media Format</h2>
<p>The ulaw media format represents G.711 u-law. It currently only supports 8000Khz. It is represented using the name 'ulaw'.</p>
<h4><a name="BuiltInSupportedMediaFormats-Options"></a>Options</h4>
<p>None</p>
<h4><a name="BuiltInSupportedMediaFormats-ProducedSDP"></a>Produced SDP</h4>
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<pre class="theme: Confluence; brush: java; gutter: false">m=audio 24580 RTP/AVP 0
a=rtpmap:0 PCMU/8000
a=sendrecv</pre>
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<h2><a name="BuiltInSupportedMediaFormats-AlawMediaFormat"></a>Alaw Media Format</h2>
<p>The alaw media format represents G.711 a-law. It currently only supports 8000Khz. It is represented using the name 'alaw'.</p>
<h4><a name="BuiltInSupportedMediaFormats-Options"></a>Options</h4>
<p>None</p>
<h4><a name="BuiltInSupportedMediaFormats-ProducedSDP"></a>Produced SDP</h4>
<div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent">
<pre class="theme: Confluence; brush: java; gutter: false">m=audio 24580 RTP/AVP 8
a=rtpmap:8 PCMA/8000
a=sendrecv</pre>
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<h2><a name="BuiltInSupportedMediaFormats-T.38MediaFormat"></a>T.38 Media Format</h2>
<p>The T.38 media format is used to configure T.38 support on an endpoint. It is represented using the name 't38udptl'.</p>
<h4><a name="BuiltInSupportedMediaFormats-Options"></a>Options</h4>
<p>maxdatagram - Overrides the maximum datagram value.<br/>
errorcorrect - Sets the error correction scheme. Valid options are none, fec, and redundancy.</p>
<h4><a name="BuiltInSupportedMediaFormats-ProducedSDP"></a>Produced SDP</h4>
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<pre class="theme: Confluence; brush: java; gutter: false">m=image 24580 UDPTL t38
a=T38FaxVersion:0
a=T38MaxBitRate:14400
a=T38FaxRateManagement:transferredTCF
a=T38FaxMaxDatagram:500
a=T38FaxUdpEC:t38UDPFEC</pre>
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<p>Note that some of the above is merely an example and will change depending on configuration and the remote endpoints themselves.</p>
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