calls rolling over to Voicemail are not going into the correct mailbox

[FSI]

Here’s my problem:

PBX A (CM4.0.1) is connected to PBX B (also CM 4.0.1) via an IP trunk (ISDN), PBX B is connected to Modular Messaging via QSIG.
PBX A has a coverage path with point 1 being a VDN which routes to a number in UDP which sends the call to AAR which then sends it over the IP trunk to PBX B and into voice mail. The vector of that ‘coverage’ VDN has coverage set to YES.
Extension numbers are entered in the private-numbering table.
When I call a phone on PBX A and the call rolls over to voice mail, I’m prompted for the voice mail box (welcome to Avaya Messaging, please enter the mailbox number….), the system does not recognize that this is a call rolled over to voice mail and therefore greets with the correct mailbox.
When I dial the voice mail access number or the coverage path VDN from a PBX A phone directly (without going through coverage path), the phone is identified correctly and I’m just prompted for the password.
I’m running out of ideas here, I have a feeling I’m missing something really simple but I can’t figure it out.

Regards

fsi

 

[FSI]

Let me answer my own question, just in case someone ever has a similar issue:

Instead of the VDN in the coverage path routing to AAR and UDP to the remote VoiceMail (Modular Messaging) we created a hunt group on PBX A with a hunt group extension and AAR code that gets the calls to the trunk to PBX B and to MM off of PBX B. This did the trick

Regards

fsi