[cisco-voip] Need help with call failure

[Ryan Huff]

Is this a new implementation or an in-flight system that recently developed this issue?

A couple of things here:

4xx messages are client related messages while 5xx are server related. Your debug only shows evidence of a 403 (forbidden). I would verify that the user agent credentials are in-fact correct and also verify you have all the signaling addresses accounted for in your IP Address Trust List (I would add 172.27.199.1 and 172.27.199.5 to the trust list as this is the BVI1 interface you are binding to). Alternatively, if you temporarily disable the trust list, does the issue go away? I'm assuming the far end is onnet (MPLS ... etc) since you're sending the INVITE out with a private IP address.

Thanks,

Ryan
________________________________
From: cisco-voip <cisco-voip-bounces at puck.nether.net> on behalf of Sathya <thinksathya at gmail.com>
Sent: Wednesday, March 22, 2017 7:25 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Need help with call failure

Hello Guys,

Good morning all. This is my first post and excepting your help on an issue.

Scenario : Cisco IP Phone --> CUCM --> SIP Trunk --> BE6S (2921 Router) --> Sip Trunk --> ITSP

When sending outbound calls from IP Phone to provider it fails sometimes with 403 forbidden and 503 Service not available.

CUCM IP : 172.27.199.11
GW : 172.27.199.1
ITSP : trunk.abc.com<http://trunk.abc.com>

Attached show run and the CCSIP message.

Calling Number : 0388400000
Called Number : 0405808398

855 is the IP Phone extension which gets converted to 0388400000 in the Gateway and sending to provider.

I have configured the Region , transcoder and not sure if the source interface binding is necessary on Voice service Voip and in the dial-peer.

Also I see the Voip dialpeer to the Service provider is busy out very often.

One more thing is , I can see is both From and To address to the Provider is showing the same name and I tried to bind the source interface but same error.

Your help is highly appreciated.

Thanks

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