Outgoing OCS conference calls fails over Cisco 2821 RRS feed

  • Question

  • When we initiate an outgoing conference call over Cisco 2821 it fails with Error 404 Not Found. The problem is, OCS 2007 Conferencing server does send the sip address from user which initiated the conference call. The Cisco 2821 cannot place this call without a telephone number in FROM-field.


    part of INVITE message from Mediation Server to Cisco 2821:


    INVITE sip:+491234567890@;user=phone SIP/2.0

    FROM: <sip:user1@domain.com;gruu;opaque=app:conf:audio-video:id:35CFCE09505C5E9457999C844B309091B>;epid=CF6072D42F;tag=c322a88033

    TO: <sip:+491234567890@;user=phone>



    part of Answer from Cisco 2821:


    <<<<<<<<<<<<Incoming SipMessage c=[<SipTcpConnection_17610D1>],<-

    SIP/2.0 404 Not Found

    FROM: <sip:user1@domain.com;gruu;opaque=app:conf:audio-video:id:35CFCE09505C5E945782C844B309091B>;epid=CF6072D42F;tag=c322a88033

    TO: <sip:+491234567890@;user=phone>;tag=10F67118-504


    CALL-ID: b708b03a-22d8-451d-bd7e-09c934a7b0da

    VIA: SIP/2.0/TCP;branch=z9hG4bK468e029

    ALLOW-EVENTS: telephone-event


    DATE: Fri, 14 Nov 2008 10:53:04 GMT

    SERVER: Cisco-SIPGateway/IOS-12.x

    Reason: Q.850;cause=1



    How can I solve this problem?


    Joerg Bachmann

    Thursday, November 20, 2008 9:56 PM

All replies

  • Hi Joerg,


    What verions of IOS are you using and are your connecting the 2821 directly to a PSTN connection like a T1 or are you using it to connect to an IP PBX? I have not seen this as an issue for connecting to an IP-PBX. A 404 not found may indicate a missing dial peer in your configuration. The guide below is from Cisco for connecting to a t1 for OCS on an ISR.






    Friday, November 21, 2008 11:53 PM