User guide

Chapter 5: Phone Book Configuration
Multi-Tech Systems, Inc. MVPGSM 71
Dial tone in sent to PBX from << MVPGSM:
A user dials digits which are sent to the >> cellular network for call routing:
The call is placed from the cellular network to the intended >> end point (a cell phone, PSTN phone or PBX):
Call Forwarding
Call Forwarding is a feature of the Inbound Phone Book for IP calls and can be set to ‘Unconditional’ or ‘Busy’ as needed.
Unconditional forwarding will occur without any attempt to check the line status – an incoming IP call will be forwarded to another SIP end point over
the IP network (the cellular network is not involved). See the Cellular to IP Call Flow section for call forwarding of cellular calls.
Busy forwarding will only occur if the line is detected as busy.