calls to SIP trunk

[lpietro]

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:[email protected]:5060> failed. Reason: Server Failure
16:23:59.179 [CM503003]: Call(73): Call to sip:[email protected]: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@([email protected])@[Dev:sip:[email protected]:5060]
16:23:59.069 [CM503004]: Call(73): Route 1: VoIPline:20001@([email protected])@[Dev:sip:[email protected]:5060]
16:23:59.069 [CM503010]: Making route(s) to <sip:[email protected]:5060>
16:23:59.054 [CM503001]: Call(73): Incoming call from Ext.10001 to <sip:[email protected]:5060>
16:23:59.054 [CM503001]: Call(73): Incoming call from Ext.10001 to <sip:[email protected]:5060>

Any help or suggest ? Many thanks in advance

Luigi

 

[bluetel2]

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:[email protected]:5060 has failed; Cause: 503 Service Unavailable; warning: ; from IP:10.24.10.102:5060

 

[lpietro]

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

 

[TwigsUSAN]

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.

 

[lpietro]

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