We have a customer who has Nortel 61C with SCCS and octel voice mail system. They are now in process of moving into Cisco AVVID with 700 IP Phones with 725 mail boxes and 72 sessions, but would also like to keep their existing phone system.
They will be purchasing Cisco Call Manager with Unity Voice Mail server.
What is the best way to connect these two different systems?
1) 61C can be connected over a PRI T1 running QSIG protocol with Cisco Voice Gateway.
2) What about the connectivity options between Octel
Voice Mail System with Cisco Unity System.
Any feedback,
Thanks