User guide

Chapter 5: Phone Book Configuration
Multi-Tech Systems, Inc. MVPGSM 70
Sample Configuration: IP to Cellular Call Flow
This sample section will show the process of making a call from a PBX extension and routing it to its end point using an MVPGSM. The graphic below
represents the ‘big ‘picture’ of the process; below that will be brief statements showing the steps of the process with a short statement describing the
flow. Double arrows show the direction of flow within the statement.
Call initiated from PBX Extension number 301 >> IP sends SIP invite packet with PBX extension 301:
Inbound Phone Book removes prefix 301 >> call routed to available channel (channel will depend on Load Balancing settings):