Video via Inter-Cluster Trunk (Non-Gatekeeper Controlled) with Media Termination Point Required

[martin1.plank]

Hi Outthere,

We've tow CUCM Cluster connected via a Inter-Cluster Trunk (Non-Gatekeeper Controlled). We use the Option Media Termination Point Required.

An Cisco IOS Enhanced Software Media Termination Point works on both sides.

For audio-calls everything works fine!

Now we want to use video-call.

The MTP is in passthrough mode.

Regions und Locations are also conigured.

What else do we need and what are the options to troubleshoot it?

[martin1.plank]

Sorry I forgot some interresting details:

CUCM System version: 6.1.4.2228-1

MTP: Voice Router with Cisco IOS Software, 2800 Software (C2800NM-IPVOICEK9-M), Version 12.4(24)T3

dspfarm profile 9 mtp
description MTP for ICT passthrough and G729r8
codec pass-through
codec g729r8
maximum sessions software 100
associate application SCCP

[Jaime Valencia · Accepted solution]

Cisco Unified CM Release 5.0 introduced audio transcoding resources  based on Cisco IOS Enhanced Media Termination Point, which are able to  support transcoding the audio stream of a video call while still  supporting the video stream via a pass-through codec. The pass-through  codec is used only for the video stream because the pass-through codec  cannot be used for a stream that requires transcoding. The following  three conditions must all be true for the pass-through codec to be used:

•The two endpoint devices have a  matching CODEC capability.

•MTP Required is not checked for either endpoint.

•All intermediate resource devices (MTPs  and transcoders) support the pass-through codec.

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/6x/video.html

HTH

java

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[martin1.plank]

Thanx for your help!