I am going through a similar search for answers right now. We have a customer that wants to connect their CIX to a Samsung via SIP Peering mode. Toshiba tech support said they will not support the connection to another system. They didn't say it would or would not work, but from the info p2ii gave me - it should be feasible. From what I've read it sounds like a Tie E&M over the public internet... but I am still operating on theory without any practical experience.

I will keep you updated as I read and learn more!

- Tony
Ohio Data LLC
Phone systems, data networks, firewalls and servers in Central Ohio.
Some people aren't used to an environment where excellence is expected.