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CallManager trunk group to Avaya IP Trunk

We want to add a backup route group that on the other end is an Avaya IP trunk (h.323). We've followed Avaya's 7/3/02 interoperability note but found dropped calls when a Cisco phone places a call on hold or tries to transfer. Has anyone tried this configuration?

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New Member

Re: CallManager trunk group to Avaya IP Trunk

I'm assuming you're doing G.729? I don't believe I've had this problem with G.711.. But to fix this problem you need to implement MTP (Media Termination Points) but if you are using G.729 you need a hardware MTP I believe...

Chris Evans

Exp@nets of Ohio

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