Transcodable codecs allow you to convert between different codecs, for example on different call legs or when recording etc. Most codecs are this type.<div><br></div><div>Some codecs though are patented and need to be licensed to use, eg G729/G723.1/AMR. To at least have some support for these they're implemented as passthrough codecs - you can pass the raw data from phone to another on a bridge without needing a codec because you're not doing the encoding/decoding. However this means you have a limitation that you cannot use these codecs for anything that needs that ability - voicemail/conference/record/eavesdrop etc, and bridging with different codecs on each leg.</div>
<div><br></div><div>If you want to use G729 that's one case where there is both a passthrough and commercial transcoding codec. mod_g729 is the passthrough one. mod_com_g729 is transcodable, but requires purchasing licenses from <a href="http://www.freeswitch.org">www.freeswitch.org</a>.</div>
<div><br></div><div>-Steve</div><div><br><br><div class="gmail_quote">On 28 February 2013 18:53, Venkateshwaran Thirugnanam <span dir="ltr"><<a href="mailto:venkateshwaran54@gmail.com" target="_blank">venkateshwaran54@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi All,<div> What the difference between Transcodable codecs and Pass-Through Codec? Pls explain</div><div><br></div>
<div>Thanks,</div><div>Kumaran T</div>
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