It seems to break the MWI. After I upgraded the firmware to 8.3 the MWI stopped working and I noticed the following entry in my log:
Got SIP response 400 “Bad Request” back from 192.168.0.20
192.168.0.20 is the IP address of my 7960. I tried changing the VM context I used both @default and @device. It made no difference. I downgraded back to 8.2 and the MWI lit up as soon as the phone finished booting.
I just thought I’d let poeple know. I’m using AAH 2.8 & FreePBX 2.1.