If you are using sipxbridge, it sends a uri for "bridge" with the reinvite with sdp. Sipxbridge holds the refer local to the sipx proxy and only sends the reinvire with sdp out via the itsp trunk.
If you are sending without sipxbridge there is a refer and an assumption the gateway can resolve the moh uri via dns srv, unless you use an sbc that can do this. ============================ Tony Graziano, Manager Telephone: 434.984.8430 Fax: 434.984.8431 Email: tgrazi...@myitdepartment.net LAN/Telephony/Security and Control Systems Helpdesk: Telephone: 434.984.8426 Fax: 434.984.8427 Helpdesk Contract Customers: http://www.myitdepartment.net/gethelp/ ----- Original Message ----- From: sipx-users-boun...@list.sipfoundry.org <sipx-users-boun...@list.sipfoundry.org> To: Discussion list for users of sipXecs software <sipx-users@list.sipfoundry.org> Sent: Sat Jan 15 14:18:13 2011 Subject: Re: [sipx-users] Music on Hold Sans Sipx-Bridge Its a cisco voice router so it includes methods for translating sip messages and sdp. Its internal moh capabilities probably are not important as we don't use Call Manager and they are designed to work with that device. What i have been trying to understand is just how the polycoms and sipxecs proxy are handling this scenario on the lan. From my traces: Phone A makes a Call to Phone B Phone B Places A on Hold Phone B (in a new call-id) Invites ~~mh~l...@domain.tld a=recvonly Phone B sends Reinvite to A with no sdp information Phone A Replys with sdp a=recvonly and gets stream from B acting as a 3pcc When Phone B wants to get back to the call it sends Reinvite with sdp info Is this correct ? Gabrial Casey Telecommunications Franklin American Mortgage Company 501 Corporate Center Dr. Suite 400 Franklin, TN 37067 Direct:615-468- 2945 Cell: 615-852-5015 Fax: 615-628-5698 Email:gca...@franklinamerican.com ----- Original Message ----- From: "Tony Graziano" <tgrazi...@myitdepartment.net> To: "Discussion list for users of sipXecs software" <sipx-users@list.sipfoundry.org> Sent: Saturday, January 8, 2011 10:01:46 AM Subject: Re: [sipx-users] Music on Hold Sans Sipx-Bridge On Sat, Jan 8, 2011 at 10:25 AM, Gabe Casey < gca...@franklinamerican.com > wrote: I have a question concerning the installation of a cisco UBE. This SBC is required for an installation. Typically Music on hold scenarios are handled via the sipx-bridge. I see that the polycom phones use an sdp event to trigger the invite to the url ~~mh~@doman.tld Can anyone explain this process and what i might do to pass this through the extenal sbc. The Unified Boarder Element is technically designed to sit in front of a CCM which will supply the unicast or multicast audio. My traces from the cisco do show the sdp event= send only which seems to trigger an on hold scenario however im not sure how the entire process actually works in a sip gateway The environment: 4.2 from iso Polycom 450/650 Warm Regards Gabrial Casey Telecommunications Franklin American Mortgage Company 501 Corporate Center Dr. Suite 400 Franklin, TN 37067 Direct:615-468- 2945 Cell: 615-852-5015 Fax: 615-628-5698 Email:gca...@franklinamerican.com _____________________________________________________________________ This message contains confidential information. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately if you have received this e-mail by mistake and delete this e-mail from your system. Finally, the recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/ The SBC's we work with support a MOH uri which handles that (and ignores the polycom moh). SBC says: Support old type (0.0.0.0.), which is silence. Support MOH URI, where we input the default sipx MOH uri the polycom phones use. Sipxbridge does its own MOH, which is not customizable. The question is, what does the SBC support as far as MOH, because you have not indicated that yet. /t _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/ _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/
