Call issues with SIP Trunk

[jszapipes]

We're having issues getting SIP inbound/outbound calls working. Outbound calls receive an immediate fast busy signal. I have posted my config along with debug ccsip messages. Assistance with a resolution would be much appreciated.

[Mohammed al Baqari]

Hi,

Your configs aren't consistent with your debugs. The debugs are matching outgoing dialpeer as 1006 while your config has no dialpeer 1006

[Ayodeji Okanlawon]

Hi,

We dont see the outbound dial-peer as Mohammed mentioned. But here are a couple of things you can do..

1. Apply the correct sip bind statements to your dial-peers eg

++ CUCM facing dial-peer ++

dial-peer voice 2000 v

voice-class sip bind control source-interface interface Loopback0 

voice-class sip bind media source-interface interface Loopback0

++ ITSP dial-peer ++

dial-peer voice yyyy voip

voice-class sip bind control source-interface interface GigabitEthernet0/0/1 [assuming gig0/0/1 = interface that connects to ITSP]

voice-class sip bind media source-interface interface GigabitEthernet0/0/1 [assuming gig0/0/1  = interface that connects to ITSP]

Second thing is turn off TCP as the transport protocol on the dial-peer facing your ITSP. Try with default UDP first because some ITSP wont allow TCP unless of course you have been told to use TCP