No MTP functionality via IPIP GW

Unanswered Question
Jul 23rd, 2009

Hello all,

I need a help with one issue.

I have this scenario:

IP phone A -> CUCM--> IPIPGW --> CUCME -> IP Phone B.

When I make a call from phone B to phone A, everything works fine. But when I make a call from phone A to phone B, I am not able to do any action thet needs MTP (Hold, Transfer....), no matter if I'm using g729 or g711. I have CUCM resources and transcoders on IPIP gw and one other gateway as a MTP.

How should I set up media resources? I have tried almost all possible combinations, but still nothing.

Thanks in advance.

Kamil

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Nicholas Matthews Mon, 07/27/2009 - 12:56

Hi Kamil,

Which protocols are in use here?

If you're using all of one protocol, you shouldn't need MTP.

Ex:

phone--cucm--h323--cube--h323--cucm--phone

This is dependent on the version of the ipipgw. I would move to 20T or later for full functionality.

hth,

nick

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