[cisco-voip] TEHO using SIP trunk ringback issue

[NateCCIE]

Is PRACK enabled on the sip trunk?

 

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Abebe Amare
Sent: Friday, July 24, 2015 1:54 AM
To: cisco voip
Subject: [cisco-voip] TEHO using SIP trunk ringback issue

 

Hi,

 

The call flow is like this:

 

CUCM cluster 1 ----SIP Trunk---->CUCM cluster 2---H323---->Voice gateway----ISDN PRI--->PSTN

 

The problem is when calling from cluster 1 to the PSTN, the CUCM in cluster 2 plays ring back tone whether the final destination is reachable or not, we don’t hear the PSTN announcements in case the number is wrong or unreachable or…etc. How to remedy this.

 

thanks in advance

 

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