User's Manual

APPLICATION DESCRIPTION

A. IP PBX / SIP Server with GXW410x

A SIP proxy server such as Asterisk or a SIP registrar server can be deployed with the GXW410x series

gateway. In this environment, the SIP server handles SIP registration and call control and the GXW410x

processes media conversion between IP and PSTN calls.

There are 2 ways to configure GXW410x when using it with a SIP Server:

1. With SIP accounts configured on Channels page. In this case, the GXW410x gateway acts as

an endpoint requesting registration from the SIP Server. Under the Channels page you will need

to fill in the information like SIP User ID, Password, etc. Now, when calls are made from an IP

phone, the call will be routed to the SIP Server which will forward it to one of the SIP accounts on

the GXW410x, which will then forward it to the PSTN line.

2. Without SIP accounts. In this case, you simply have to configure the SIP Server to perform

forwarding of the SIP INVITE message with the FXO destination number to the gateway’s IP

Address. The GXW410x gateway will receive the digits and immediately forward them on the

FXO lines to the destination PSTN. Most of the configuration on the Gateway for this case will

remain default, except Stage Method needs to be set to 1, and SIP Server IP Address/DNS name

has to be filled.

FUNCTIONAL DIAGRAM OF IP-PBX & GXW410X

For incoming calls from the PSTN analog endpoints to the GXW410x gateway, the device will auto

forward each call to a configured IP extension. The SIP Server can then route the call based on its own

configuration or IVR system.

PSTN

Cloud

Anywhere in the

world

GXW-

410x

4 or 8

Ports

FXO

Lines

PSTN Analog

endpoints

Grandstream IP

Phones

IPPBX or

SIP

Server

IP/LAN

IP/WA