IPO - SBC - Skype

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  • mguilmet
    Member
    • Feb 2011
    • 5

    IPO - SBC - Skype

    Hi,


    I have just put a SBC between mu IPO and my Skype for Business server. Everything seems to be configured properly on the SfB and SBC side. I can make calls from IPO phones to SfB users. However, I cannot make calls from SfB to IPO. The calls leave SfB server, are going thru the SBC and I can see them hitting the IPO but nothing happens after that. It looks like the IPO doesnt know which phone to ring.



    Here's a call trace from SfB to IPO


    955288045mS SIP Call Rx: phone
    INVITE sip:[email protected];user=phone SIP/2.0
    Via: SIP/2.0/TCP 10.XXX.XXX.253:5060;alias;branch=z9hG4bKac72517411 6
    Max-Forwards: 69
    From: "XXXXXXX" <sip:+53999;[email protected];user=phone>;tag= 1c1405126161;epid=902F1D7780
    To: <sip:[email protected];user=phone>
    Call-ID: [email protected].253
    CSeq: 1 INVITE
    Contact: <sip:10.XXX.XXX.253:5060;transport=tcp;ms-opaque=7b537d9addec44ee>
    Supported: 100rel,sdp-anat
    Allow: ACK,CANCEL,BYE,INVITE,PRACK,UPDATE
    User-Agent: M800B/v.7.20A.202.112
    Content-Type: application/sdp
    Content-Length: 356

    v=0
    o=- 893849865 1097867657 IN IP4 10.XXX.XXX.253
    s=session
    c=IN IP4 10.XXX.XXX.253
    b=CT:1000
    t=0 0
    m=audio 7190 RTP/AVP 97 0 8 101 13
    c=IN IP4 10.XXX.XXX.253
    a=rtcp:7191
    a=label:Audio
    a=sendrecv
    a=rtpmap:97 RED/8000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=rtpmap:13 CN/8000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=ptime:20



    Extension 3860 is configured with SIP Name 3860 - SIP Display Name User A and Contact 3860.


    I have Incoming Call Route for SIP Trunk as Any Voice to Destination .



    I'm not sure where to look anymore.



    Thanks
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