Calls from H323 Gateway to SIP trunk failing.

[pgupta601]

Hi All,

Call Flow::

End User --> Avaya PBX --> H323 Voice gateway --> Call Manager Cluster 1 --> SIP trunk --> Call Manager Cluster 2 --> gateway.

Issue::

Calls going blank intermittently.

please suggest. 

[Rejohn Cuares]

You need to collect the CUCM logs and post it here so we can help.

[pgupta601]

Hi Rejohn,

Upgrading the IOS on the gateway from 15.0 to 15.4 worked.

everything is working fine now.

Thanks.