Grandstream GXW410x User Manual - Manual (Page 8)

Grandstream Networks, Inc. GXW410x User Manual Page 8 of 32
Firmware Version 1.4.1.5 Last Updated: 5/2014
APPLICATION DESCRIPTION
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.
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 with a SIP Server:
1. With SIP accounts configured on Channels page. In this case, the GXW acts like an endpoint
requesting registration from the SIP Server. Under the Channels webpage you will need to fill in
the information like SIP User ID, Password, etc. Now, when you try to make calls from IP, 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 gateways IP
Address. The GXW410x 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.
For incoming calls from the PSTN analog endpoints to the GXW410x, 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/WAN
FIGURE 3: FUNCTIONAL DIAGRAM OF IP-PBX & GXW410X