I have a client who wants to bridge their two offices... one has Shoretel 4000 to our BCM 450 r6 using either H323 or SIP. Has this been done before? I know Cisco to BCM has some issues. They already have 6-digit DN's on Shortel.My local Customer would like to keep their T7316e phones (50) without changing all hardware/software to Shoretel. (Me too!) since we're not a Shoretel Dealer.