We have a standalone CUCM 7.1.5 with 2911 CUBE (Version 15.0(1)M2) installed together with 15 SIP phone model 9971.
Outbound calls from 9971 SIP phone works fine.
Inbound calls from PSTN to SIP phone fails at CUCM side.
In this case we get a rejection message from CUCM:
Sep 17 07:12:55.908: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
SIP/2.0 503 Service Unavailable
Warning: 399 CUCM-7-1-5 "Unable to find a device handler for the request received on port 5060 from 192.168.253.251"
Date: Tue, 17 Sep 2013 07:12:57 GMT
From: "MY-GSM-NUMBER" <sip:MY-GSM-NUMBER@voip.provider-name.com>;tag=3DD480-1B7E
Via: SIP/2.0/UDP 192.168.253.251:5060;branch=z9hG4bK42238
CSeq: 101 INVITE
Outside called number (pstn-number) is translated on cube to DN 100, which is applied and used on 9971 phone and is registered to CUCM.
SIP trunks on CUBE and CUCM should be properly setup (no issues with outbound calls?).
I'm attaching the full debugs from CUBE and a CUCM trace for inbound call for more detailed information.
Did anyone had any similar issues?
i'll be very gratefull for any usefull advise for resolving this problem
The CUCM is rejecting your sip requests becoming, probably, from a wrong ip address
Check your trunk configuration on CUCM and verify that you configured the right ip address of your cube.
In your CUBE configuration also add under voice service voip:
bind control source-interface gx/x (the ip address of this interface, should be the one you configured on sip trunk on CUCM)
bind media source-interface gx/x
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First make sure about binding the traffic properly on cube.
Out going calls to outbound interface and incoming to inbound interface.
In dial-peer for incoming, set preference to zero.
Make sure you select the right settings on sip trunk.
If all settings are perfect, Reset sip trunk and try, if not working, try rebooting cucm.