I would advise against using the MTP.. with this enabled it will hairpin all gateway traffic to the MTP device (which is probably your callmanager)Very innefficient..Although I had the same problem, and was not sure if there is a way to fix it..What ...
I have done this in lab environment, and yes it does work...You just need to make sure your TSCs are up on the DCS nodes, then you can setup the Leave Word Calling on the main G3, then it'll pass that to the remotes..
No way possible..CallManager doesn't support Q.SIG enough to do this feature. Leaving Unity no way possible to do this either..The only other way is to do a dual integration on the Unity, but then you would need a local AVAYA PBX with analog and digi...