IP PBX operation and SIP call flow
Posted on 2011-02-25
Is anyone able to eleborate on the operation of an generic hardware or software IP PBX, I have read:
"SIP clients register with the IP PBX server when they wish to make a call they ask teh IP PBX to establish the connection."
I am trying to get an clear understanding for how the call flow from 1 client (IP PHONE) to another another through the PBX.