topic Re: CUCM ad-hoc conference with thrird party SIP phone in Call Control https://community.cisco.com/t5/call-control/cucm-ad-hoc-conference-with-thrird-party-sip-phone/m-p/3580379#M2186 <HTML><HEAD></HEAD><BODY><P>Third party SIP phones are not supported with the CUCM ad hoc conferencing mechanism (which is based on non-RFC standard SIP protocol extensions and behaviours).</P><P></P><P>The only type of conferencing that would be able to work would be RFC SIP standard conferencing, which is managed (including audio mixing) onboard the phone itself - in which case CUCM is not aware of the conference, and there are no interactions with the CUCM ad hoc conferencing feature.</P></BODY></HTML> Wed, 04 Apr 2018 17:32:17 GMT dstaudt 2018-04-04T17:32:17Z CUCM ad-hoc conference with thrird party SIP phone https://community.cisco.com/t5/call-control/cucm-ad-hoc-conference-with-thrird-party-sip-phone/m-p/3580378#M2185 <HTML><HEAD></HEAD><BODY><P>I have been trying to set up an ad-hoc conference with a third party sip-phone as a host. But I am getting 403 Forbidden with "unknown calling DN" after I send an Invite to conference factory URI to initiate the conference. From SIP trunk messaging guide, "The conference initiator calls the conference server using INVITE(Conference Factory URI) to begin a conference. The AS-SIP-EI conference factory URI lookslike @. The UCM routes the request via normal DA dialplan routing using confFactoryDigitString.". Any idea?</P></BODY></HTML> Tue, 03 Apr 2018 17:59:47 GMT https://community.cisco.com/t5/call-control/cucm-ad-hoc-conference-with-thrird-party-sip-phone/m-p/3580378#M2185 rajarshi.basak 2018-04-03T17:59:47Z Re: CUCM ad-hoc conference with thrird party SIP phone https://community.cisco.com/t5/call-control/cucm-ad-hoc-conference-with-thrird-party-sip-phone/m-p/3580379#M2186 <HTML><HEAD></HEAD><BODY><P>Third party SIP phones are not supported with the CUCM ad hoc conferencing mechanism (which is based on non-RFC standard SIP protocol extensions and behaviours).</P><P></P><P>The only type of conferencing that would be able to work would be RFC SIP standard conferencing, which is managed (including audio mixing) onboard the phone itself - in which case CUCM is not aware of the conference, and there are no interactions with the CUCM ad hoc conferencing feature.</P></BODY></HTML> Wed, 04 Apr 2018 17:32:17 GMT https://community.cisco.com/t5/call-control/cucm-ad-hoc-conference-with-thrird-party-sip-phone/m-p/3580379#M2186 dstaudt 2018-04-04T17:32:17Z