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calls to SIP trunk

Discussion in '3CX Phone System - General' started by lpietro, Oct 28, 2009.

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  1. lpietro

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    Hi,

    I've hust configured the 3CX ( latest release ) to SIP trunk with CCM. Here the address:
    CCM: 10.24.10.102 --> DirectoryNumbers on CCM 2xxxx
    3CX: 10.23.10.200 --> DierctoryNumbers on 3CX 1xxxx

    When i call from CCM --> 3CX all is working fine

    When i call from 3CX --> CCM, i get the number unavailable. Here the log on 3CX:

    16:23:59.179 [CM503008]: Call(73): Call is terminated
    16:23:59.179 [CM503015]: Call(73): Attempt to reach <sip:20001@10.23.10.200:5060> failed. Reason: Server Failure
    16:23:59.179 [CM503003]: Call(73): Call to sip:20001@10.24.10.102:5060 has failed; Cause: 503 Service Unavailable; warning: ; from IP:10.24.10.102:5060
    16:23:59.085 [CM503024]: Call(73): Calling VoIPline:20001@(Ln.19999@10.24.10.102)@[Dev:sip:19999@10.24.10.102:5060]
    16:23:59.069 [CM503004]: Call(73): Route 1: VoIPline:20001@(Ln.19999@10.24.10.102)@[Dev:sip:19999@10.24.10.102:5060]
    16:23:59.069 [CM503010]: Making route(s) to <sip:20001@10.23.10.200:5060>
    16:23:59.054 [CM503001]: Call(73): Incoming call from Ext.10001 to <sip:20001@10.23.10.200:5060>
    16:23:59.054 [CM503001]: Call(73): Incoming call from Ext.10001 to <sip:20001@10.23.10.200:5060>


    Any help or suggest ? Many thanks in advance

    Luigi
     
  2. bluetel2

    bluetel2 Member

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    hello,

    i suggest that your provider CCM is not configured. the provider icon is green ?

    16:23:59.179 [CM503003]: Call(73): Call to sip:20001@10.24.10.102:5060 has failed; Cause: 503 Service Unavailable; warning: ; from IP:10.24.10.102:5060
     
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  3. lpietro

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    Hi,

    many thanks for the quick reply,

    Yes, in the port/trunk status i've the VoIP provider in the registered status ( green ). What I don't know is where to configure in the cisco callmanager the Virtual Extension Number ( 1999 ) I've configured with VoIP provider.

    I've seen that Callmanager is able to send call to 3CX phones , so it seems that 3CX is missing "something" ( is missing from my knowledge ) in authenticating to callmanager when the calls starts from his side.

    Any experience connecting to Cisco callmanager via SIP trunk ?

    Many thanks for the support and best regards

    Luigi
     
  4. TwigsUSAN

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    What version of CCM are you trying to connect to. In my pass experience of trying to do SIP trunking to a CCM (not 3CX) it doesn't work so well. Cisco has been know not to follow the normal SIP protocols.
     
  5. lpietro

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    Hi,

    the callmanager I've is 7.1. But the strange behaviour is that the trunk is up because CCM-->3CX is working.

    Regards

    Luigi
     
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