User guide

Chapter 1: Description & Specifications
Multi-Tech Systems, Inc. MVPGSM 4
Chapter 1 – Description and Specifications
Introduction
The MultiVOIP GSM provides wireless voice communications over the Internet or an Intranet. By integrating
wireless connectivity into your existing data network, you can realize substantial savings on inter-office long
distance toll charges. The MVPGSM has “phone books,” which are directories set up to simulate dialing and
connecting as though the call was in the local area.
The MVPGSM can be used in several ways – four examples are graphically depicted below.
SIP Gateway Mode:
The MVPGSM functions as a SIP gateway similar to the other SIP endpoints shown in the drawing below.
As a Standalone SIP Server:
The MVPGSM functions as the SIP server for all of the SIP endpoints. Enable the SIP Server on the MVPGSM and
configure a predefined endpoint matching each SIP endpoint or enable the “Allow Undefined Registrations”
from any SIP endpoint.