From what I can make out there's no way to have a line key on a phone to monitor/seize a SIP trunk, or am I missing something? We would like to set up all the phones to have access to 4 shared FXO lines, and then several "shared SIP" lines in the sam...

Hi,I'm trying to set up a new UC320W system, connected to a "Featureline" PSTN Line from British Telecom. This is a "centrex" line which has limited PBX capability, but needs to have a 9 dialled before the number to be called.I've set up this line as...