Are there any tricky issues with setting up Voice over PSTN with Call Manager 6.1.2, 2801 pstn routers and unity connection 2.1.
My concerns are site to site calls and voicemail (unity 2.1) accesss.
I understand that AAR is required to dial back out of the pstn router when the call goes to voicemail. Can unity still be setup with extension numbers and the inbound digits from the routers get striped to send only the relevant ext number. I also understand that RDNIS has to be enabled or supported by the ISDN telcos.
Any pointers or gotchas?