Originally Posted by Cephas

Also, if you want to use it as a conference bridge you will need to go with PRI. With analog trunks the max outside parties in a single conference is 2 - obviously lame for a bridge. With a 403 you can have 1 PRI (23 callers), with a 406 you can have 2 (46 callers) and a 412 can have up to 4 PRI spans (92 callers). You also have to watch your VCM and data channels if you want to bring VoIP callers onto the bridge.

BTW 1 very cool feature of the IP Office is the ability to have an email sent to an administrator / accountant indicating every usage of the bridge, with date/time/account number. Great for reselling the service.

Cephas