Configuration Notes 281
Page 4 of 25
Deployment Scenario
Description
This configuration note is a step-by-step guide to set up one Mediatrix 3632 Series digital gateway to act as a gateway with
the PSTN in a corporate network. The Mediatrix 3632 is used to connect an existing VoIP network to the PSTN. The
configuration starts with the Mediatrix 3632 default configuration but can be easily customized for the 3631, 3531, and 3532,
so from now on, the device will be referred to as the
Mediatrix 3000 DG
(Digital Gateway). The following is the network
topology to which we will refer in our sample deployment.
Figure 1 - Network Topology
Note
: The network addresses and phone numbers shown above are sample values that will most probably vary in your
specific setup. In the following pages, when referring to such a sample value, it will be visually outlined (e.g.,
192.168.9.194
),
so whenever you see parameters outlined in that fashion, you should replace them with the values that are appropriate for
your specific setup.
Objectives
The steps described in the following pages will show you how to setup the Mediatrix 3000 DG so it can:
A. receive calls from the PSTN and route them to the VoIP network (e.g., phone 2 calls phone 1):
1. a user picks up an ISDN phone and dials the number of a line connected to the Mediatrix 3000 DG.
2. the PSTN routes the call to the Mediatrix 3000 DG.
3. the Mediatrix 3000 DG routes the call to the appropriate Mediatrix 1102, removing necessary prefix (area
code
030
) from the called number.
4. the Mediatrix 1102 makes the appropriate analog phone ring.
5. a user picks up the analog phone and the call is established.
B. receive calls from the VoIP network and route them to the PSTN on one of the PRI lines connected to the Mediatrix
3000 DG (e.g. phone 1 calls phone 2):
1. a user picks up an analog phone and dials a number.
2. the appropriate Mediatrix 1102 routes the call to the Mediatrix 3000 DG.
3. the Mediatrix 3000 DG decides to which ISDN PRI interface route this call.
