[cisco-voip] Transcoding issue

[Chris Ward (chrward)]

Tim,

 

In this type of situation, I always like to put a device like a PC or
anything with ping capabilities in one of the voice vlans from the call
flow and then ping to a phone at the opposite end of the call flow. This
will ensure that IP connectivity (routing) is working.

 

You probably aren't using a transcoder for an IP Phone to IP Phone call.
Regardless of them being on different cluster unless there is DTMF
mismatch or fast start being used. You can check by setting up the call
with no audio and then checking the IP Phone web pages to see where the
streams are being sent. That will show use where other potential issues
may lie.

 

+Chris

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of H, Tim
Sent: Tuesday, April 13, 2010 11:20 AM
To: cisco-voip at puck-nether.net
Subject: [cisco-voip] Transcoding issue

 

I have a remote site on a separate CUCM cluster than another remote
site.  They can dial each other and the call will connect, but they then
cannot hear each other.

 

I have other sites on the same CUCM cluster and can talk to the other
remote sites with no issues.

 

I have a feeling it's a transcoding issue.  Any other ideas?

 

 

 

Tim 

 

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