<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Jan,<div><br></div><div>For outbound, I do it this way:</div><div><br></div><div><div> <extension name="disable-annexB" continue="true"></div><div> <condition field="${switch_r_sdp}" expression="/(.*)(m=audio \d+ RTP\/AVP)(.*)( 18 )(.*)/s"></div><div> <action application="export" data="sip_append_audio_sdp=a=fmtp:18 annexb=no"/></div><div> </condition></div><div> </extension></div><div><br></div><div>For inbound, it's going to be tricky, as I am not sure if there is a way to patch the SDP that FS will send back...</div><div><br></div><div>
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<br><div><div>Le 02/12/2010 à 18:48, Jan Riedinger a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>As far as I know the codec strings for g729 and g729b are the same, <br>despite these codecs are not compatible according RFC 3555 (at least <br>Cisco is reading the RFC in that way, <br><a href="https://supportforums.cisco.com/docs/DOC-3188">https://supportforums.cisco.com/docs/DOC-3188</a>).<br><br><br>Am 02.12.2010 18:12, schrieb Madovsky:<br><blockquote type="cite">Maybe<br></blockquote><blockquote type="cite">absolute_codec_string will do the trick<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">----- Original Message -----<br></blockquote><blockquote type="cite">From: "Jan Riedinger"<<a href="mailto:riedinger@sns.eu">riedinger@sns.eu</a>><br></blockquote><blockquote type="cite">To: "FreeSWITCH Users Help"<<a href="mailto:freeswitch-users@lists.freeswitch.org">freeswitch-users@lists.freeswitch.org</a>><br></blockquote><blockquote type="cite">Sent: Thursday, December 02, 2010 10:51 AM<br></blockquote><blockquote type="cite">Subject: [Freeswitch-users] How to force the usage of g729 instead of g729b<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">By setting global_codec_prefs and inbound_codec_prefs it's possible to<br></blockquote><blockquote type="cite">specify, which codecs are supported for inbound calls. How can I specify<br></blockquote><blockquote type="cite">that the switch shall support g729, but not g729b?<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">The incoming INVITE message contains a SDP with the media attribute<br></blockquote><blockquote type="cite">annexb=yes. How has Freeswitch to answer to indicate that g729 is<br></blockquote><blockquote type="cite">supported but g729b is not supported?<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Thank you in advance<br></blockquote><blockquote type="cite"> Jan<br></blockquote><blockquote type="cite"><br></blockquote><br>-- <br>Jan Riedinger Phone : +49-30-39 73 19 66<br>Dipl.-Inf. | Managing Director Fax : +49-30-39 73 19 64<br> E-Mail: <a href="mailto:riedinger@sns.eu">riedinger@sns.eu</a><br>SNS Consult GmbH ICQ : 163-237-041<br>Südwestkorso 49a MSN : <a href="mailto:jan@sns-consult.de">jan@sns-consult.de</a><br>14197 Berlin GERMANY Skype : Jan Riedinger<br><br>AG Charlottenburg - HRB 71973<br><br><br>_______________________________________________<br>FreeSWITCH-users mailing list<br><a href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a><br>http://lists.freeswitch.org/mailman/listinfo/freeswitch-users<br>UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users<br>http://www.freeswitch.org<br></div></blockquote></div><br></div></body></html>