I have a customer that upgraded to an Avaya CM8. They are able to dial out dsn but are unable to receive incoming calls from our SL100. Our trunk group is setup as a PRI Autovon NFAS trunk group. We are sending the 40 and 7 digit number to their switch but are getting a wave off. One of the install techs is telling me because his setup for the Avaya DSN trunk is Pri. He said they are using the world dial plan and can't change to precedence dialing without rebuilding the trunks as CAS. Can someone please explain this or point me in the right direction to find the info for myself.
Thanks in advance
Thanks in advance