How are you connecting to the pstn? Siptrunk or gateway? If trunk is the itsp sending to you on port 5060 or 5080? ============================ Tony Graziano, Manager Telephone: 434.984.8430 Fax: 434.984.8431
Email: [email protected] 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: Claudio Succa <[email protected]> To: Tony Graziano <[email protected]> Cc: [email protected] <[email protected]> Sent: Tue Aug 10 10:16:33 2010 Subject: Re: [sipx-users] MOH not working [SOLVED] Il martedì 10 agosto 2010 12:33:21 Tony Graziano ha scritto: > The media server supports g722 as well as g771u/a. What would be > interesting to know is why in your case you need to change the order of > codecs. During a media negotiation, at least several codecs should be > offered before an agreement is made. I made several tests between 4 phones: two with G722 as first codec and two with G711u. Moh works only with the two phones having G722 as first codec. > Internally it should never be an issue. On gateway (or siptrunk) calls, > the > question is whether the carrier/gateway is limiting the codecs being > offered. On outgoing calls moh works with all four phones. On incoming calls moh doesn't work at all. Moreover in both case retrieving the line the voice flows only more from sipx to the caller. Of course this is the worst problem because it makes impossible to terminate a call transfer. I suspect some misconfiguration in the DNS. For example: the sip domain is "skoer.it" and the proxy server is "sip.skoer.it". As suggested I set a dual zone DNS with the same fqhn pointing to different ip viewed from inside rather then outside. If I had to set sip:[email protected] (the proxy address instead of the domain) on snom phones, how can I do the same for the addresses viewed by ITSP? > Can you explain if there is a difference between codecs internally versus > through the PSTN? What version fimrware are you using on your phones? In both case the music is coded by the sipx server. The difference should be that ITSP can decode it while the snom phones with G711 can't. I guess that they don't renegotiate the codec when go in hold status. The phones are snom300 and the firmware is the 7.3.30, the last one before the release 8 which is not well supported by Sipx. > A call trace might help to see if there is a general issue with > negotiation. I am not a snom user (I only have m3's), so I don't have > direct experience to relate to this. Attached there is a trace retrieved from the phone that doesn't play the music. -- Claudio Succa PERTEL - Torino - Italy +39-011-19826800 http://www.pertel.it http://www.uniassist.it _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users/
