User guide

Multi-Tech Systems, Inc. MVPGSM 69
Chapter 5 – Phone Book Configuration
Introduction
The wireless connectivity of the MVPGSM provides the cost-savings of wireless-to-wireless connections and
inexpensive long distance to an existing location. By flagging calls that would connect to a remote site with
another MultiVOIP unit or calls that are to be long distance, the MVP GSM can save money by routing those calls
through the wireless connection instead of the standard PSTN. By configuring the phone books and setting up
these routes, you can ensure that the calls placed are using the least cost possible to connect. The phone books
also provide some security by limiting what numbers may be routed through them.
The “Inbound” phonebook is created with the dialing rules required for a call to be received on that VOIP. The
“Outbound” phonebook describes dialing rules used to send calls from this VOIP, over IP, to a SIP end point.
Inbound and Outbound refer to the connections that the MVPGSM has with devices that are accessible through
IP, not those that connect through the wireless network.
Briefly stated, the Outbound phone book lists the phone numbers (SIP end points) it will call; its Inbound phone
book describes the dialing sequences that can be used to call into the MVPGSM and how those calls will be
directed out to the cellular network. The phone numbers are not literally “listed” individually, but are, instead,
described by rule, such as an area code or beginning digit.
Note: Due to the differences in the technologies, we cannot guarantee that DTMF tones will be correctly
translated from the cellular network.
Here is a basic setup example of how the MVPGSM can be put to use: