GSM Gateway User Manual
www.allo.com Version 2.0 6
1. Product Introduction
1.1 Overview
This 4 Port GSM Gateway is standalone and fan-less, easy to install and has a sturdy construction.
This 4 module GSM gateway will bridge IP calls to GSM and vice versa. Use the web interface for
easy and quick configuration.
It is a new type of VoIP gateway that allows call terminations from a VoIP network to a GSM
network and vice versa. Call connections between IP networks and GSM networks are now
bridged seamlessly to extend the voice communication coverage significantly. As the traditional
PSTN lines are starting to disappear in developed countries and are not going to be built
extensively in under-developed countries, GSM phones are getting more and more popular all
over the world with lower service charges. The emergence of Allo bridges the gap between
traditional telephone networks and VoIP networks. As a result, local and worldwide voice
communications are more convenient, available at a lower cost, and has broader coverage.
Mainly includes the following kind of model:
aGG04
- A typical network diagram as below.
Figure 1: GSM Gateway Overview