I have a single publisher 6.1.2 setup with remote sites. The solution uses Voip over PSTN. AAR works fine for calls from phone to phone over the pstn but the remote sites are unable to connect to voicemail or dial the vmail pilot number. Voicemail works fine from local site. I can see the call connect through the gateways and be sent to Call Manager but all i get is a re-order tone.This probably means that aar on voicemail is fine but unable to connect to unity vmail.
Unity 1.2 (4 digit pilot number)
Gw - 3725's using voip hairpining for test purposes