Forward calls through Voip Providers

Discussion in '3CX Phone System - General' started by cpinero, Jan 10, 2009.

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  1. cpinero

    Apr 26, 2008
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    I have setup a virtual extension that when dialed it automatically forwards the call through our Voip Provider to an external number. The problem I am having is that when I dial the extension i get the "Call transfer failed."

    Making calls through the Voip Provider works fine. It just does not allow to transfer the call.

    The setup is 3CX version 7.0.4249.0 with Grandstream GXW-4104 gateway and SPA922 phones. The call log is as follows:

    09:11:50.562 [CM503008]: Call(1): Call is terminated
    09:11:50.562 [CM503008]: Call(1): Call is terminated
    09:11:46.312 [MS210005] C:1.2:Answer provided. Connection(proxy mode):
    09:11:46.312 [MS210001] C:1.1:Answer received. RTP connection:
    09:11:46.312 Remote SDP is set for legC:1.1
    09:11:46.203 [MS210004] C:1.1:Offer provided. Connection(proxy mode):
    09:11:46.203 [MS210000] C:1.2:Offer received. RTP connection:
    09:11:46.203 Remote SDP is set for legC:1.2
    09:11:45.875 [CM503015]: Call(1): Attempt to reach <sip:550@> failed. Reason: Reason Unknown
    09:11:45.875 [CM503003]: Call(1): Call to sip:1xxxxxxxxxx@ has failed; Cause: 400 Bad request; from IP:
    09:11:45.593 [CM503004]: Call(1): Calling: VoIPline:1xxxxxxxxxx@(Ln.10008@VoipProvider)@[Dev:sip:xxxxxxxxxxx@]
    09:11:45.406 [CM503010]: Making route(s) to <sip:550@>
    09:11:45.406 Refer: from="DR800:"<sip:800@>;tag=ff599a7a; to="WIRELESS CALLER"<sip:xxxxxxxxxx@>;tag=164f7311; RefTo=<sip:550@>
    09:11:45.078 [MS210003] C:1.2:Answer provided. Connection(transcoding mode):
    09:11:45.078 [MS210001] C:1.1:Answer received. RTP connection:
    09:11:45.078 Remote SDP is set for legC:1.1
    09:11:45.000 [MS210002] C:1.1:Offer provided. Connection(transcoding mode):
    09:11:44.984 [MS210000] C:1.2:Offer received. RTP connection:
    09:11:44.984 Remote SDP is set for legC:1.2
    09:11:37.484 Session 77 of leg C:1.1 is confirmed
    09:11:37.421 [CM503007]: Call(1): Device joined: sip:800@;rinstance=a5c7795f3440f6f9
    09:11:37.406 [CM503007]: Call(1): Device joined: sip:10002@
    09:11:37.406 [CM505001]: Ext.800: Device info: Device Identified: [Man: 3CX Ltd.;Mod: 3CX MakeCall helper;Rev: General] Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CX MakeCall helper] Transport: [sip:]
    09:11:37.406 [MS210005] C:1.1:Answer provided. Connection(proxy mode):
    09:11:37.406 [MS210001] C:1.2:Answer received. RTP connection:
    09:11:37.406 Remote SDP is set for legC:1.2
    09:11:37.390 [CM503002]: Call(1): Alerting sip:800@;rinstance=a5c7795f3440f6f9
    09:11:36.828 [MS210004] C:1.2:Offer provided. Connection(proxy mode):
    09:11:36.812 [CM503004]: Call(1): Calling: Ext:Ext.800@[Dev:sip:800@;rinstance=a5c7795f3440f6f9]
    09:11:36.796 [MS210000] C:1.1:Offer received. RTP connection:
    09:11:36.781 [CM503010]: Making route(s) to <sip:800@>
    09:11:36.765 Remote SDP is set for legC:1.1
    09:11:36.750 [CM505002]: Gateway:[GXW4104 Miami] Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [Grandstream GXW4104 (HW 1.0, Ch:0)] Transport: [sip:]
    09:11:36.718 [CM503001]: Call(1): Incoming call from xxxxxxxxxx@(Ln.10002@GXW4104 Miami) to <sip:800@>
    09:11:36.484 [CM503012]: Inbound out-of-office hours rule for 10002 forwards to DN:800
    09:11:36.468 Looking for inbound target: called=10000+; caller=xxxxxxxxxx
    09:11:36.406 [CM500002]: Info on incoming INVITE:
    INVITE sip:10000+@ SIP/2.0
    Via: SIP/2.0/UDP;branch=z9hG4bKb1d109c361a01e64
    Max-Forwards: 70
    Contact: <sip:10002@>
    To: <sip:10000+@>
    From: "WIRELESS CALLER"<sip:xxxxxxxxxx@>;tag=32d0853055239501
    Call-ID: a3c19cc6cd73f3b3@
    CSeq: 1425 INVITE
    Proxy-Authorization: Digest username="10002",realm="3CXPhoneSystem",algorithm=MD5,uri="sip:10000+@",nonce="12876070296:35b01f222c4d2cad5d03df2a0a183165",response="7701bbfa890a4d19527199871fb13bd3"
    Supported: replaces, timer, path
    User-Agent: Grandstream GXW4104 (HW 1.0, Ch:0)
    Content-Length: 0

    Anybody has an idea of why is the call not being forwarded??

  2. discovery1

    discovery1 Member

    Aug 4, 2008
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    How are you testing this? Are you making a call through the VOIP provider using a Grandstream phone?
    Have you checked that the VOIP provider is correctly registered in the 3CX status page?

    Is the VOIP provider a supported one? If not that is likely to be the problem.
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