G3 Trunk to Trunk Calls Drop

[ahannigan]

I am using a G3 V12. I have a ISDN Pri tie trunk to an Auio Codes Gateway (M2K)that connects to MS OCS 2007. All is good so far, trunks up and sync.
When placing a call either external to PSTN or to an internalfrom MS Communicator(voip) it wil ring that device one or two times and disconnect. If you anwer it on the device called it is dead silence and communicator still rings and goes to fast busy. I was thinking this might be a trunk to trunk transfer issue, but not sure. Looks like trunk to trunk is enabled for all. COR is same as other trunks that have access to PSTN.
Any ideas? Thanks so much

 

[simreal]

Usually this will have something to do with answeer supervision.

I would check that to begin with.

 

[definityandcmuk]

as above, check the trunk group config

it is best to do this when the channels are idle ie ooh