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Thread: Remote IP Phone cannot register

  1. #1

    Default Remote IP Phone cannot register

    I am having a 'strange' problem. I replicated the settings of one remote Yealink T28P that was working fine but cannot understand why this particular IP phone at a different location failed. The log is as follows, EXTIP_1 is the IP address of that location and SIP_IPQUAD is that of my Quad M8L:

    ***************************** SIP message buffer start *****************************
    SIP/2.0 401 Unauthorized
    Via: SIP/2.0/UDP;rport=63387;received=EXTIP_1;bra nch=z9hG4bK1672107140
    To: "uh350rA" <sip:uh350r@SIP_IPQUAD>
    From: "uh350rA" <sip:uh350r@SIP_IPQUAD>;tag=138158770
    CSeq: 909 REGISTER
    Call-ID: 1319508916@
    Server: Epygi Quadro SIP User Agent/v5.2.7 (QUADROM-8L/26X/12LI/26XI)
    WWW-Authenticate: Digest realm="quadro",nonce="a8bae88e8a02aeb142ae624fd01e af3b",opaque="1285715824"
    Content-Length: 0

    ***************************** SIP message buffer end ******************************

    09:17:36 Receive SIP message # (28/09/2010 23:17:36:037 GMT) # UDP # 534 bytes # buff size 1 # from: EXTIP_1:63387 # to:

    ***************************** SIP message buffer start *****************************
    Via: SIP/2.0/UDP;rport;branch=z9hG4bK1672107140
    From: "uh350rA" <sip:uh350r@SIP_IPQUAD>;tag=138158770
    To: "uh350rA" <sip:uh350r@SIP_IPQUAD>
    Call-ID: 1319508916@
    CSeq: 909 REGISTER
    Contact: <sip:uh350r@>

    Some guidance to resolve this is much appreciated.

  2. #2


    Did you find out any information, I am having the same problem that you are.

  3. #3


    Not sure if this was the solution but when we re-booted the router at the remote side, the issue was resolved.

  4. #4


    This surely is a solution Seems some settings of port forwarding on the router were applied after the reboot.

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