[Asterisk-Users] Can Asterisk & Shoretel systems talk to each other?

[Jimmy]

We have a Shortel system at out main site.  We're putting Asterisk 
servers at several smaller remote sites.  I know I'll be able to get the 
Asterisk servers to talk to each other via IAX, but can they talk to the 
Shoretel server?   Basically, I'd like to be able to, from the main site 
with Shoretel, dial an extension, and reach that phone at a remote site, 
and vice-versa.

Thank you for any input!

  -Jimmy Madden