Grandstream GXW 4024/4004 FXS Gateway with 3CX Phone System

IMPORTANT This guide has been tested with the following firmware version: Program - 1.0.5.5 Bootloader - 1.0.0.9 Core - 1.0.5.2 Base - 1.0.5.2

Pre-requisites:

  1. Create an extension on 3CX Phone System for each FXS port on the device which will have a phone connected to it.
  2. Take note of the Authentication ID field and the Authentication password that you have entered for each extension that shall be connected to the FXS Gateway.

Follow these steps to set up a GrandStream GXW-4024 FXS gateway for 3CX Phone System:

1. Connect the GrandStream GXW-4024 gateway to the network and power supply. The device will boot up and request an IP address from your DHCP server.

2. Connect an analog phone to the gateway and dial *****. You will hear the current IP Address of the GXW-4024.

3. Open a browser and type in http://10.172.0.211 For this example, to access the GXW-4024 web management console.

4. Enter the password of the device and click ‘OK’ to access the gateway’s configuration. The default password is “admin”.

5. Click on "Basic Settings"

Basic Settings
Configure a static IP Address for the GXW-4024. Enter IP address / subnet mask / default gateway and DNS servers and click “Update”

6. Click on "Profile 1"

 



a.) Set the "Primary SIP Server" field to the IP Address or FQDN of the 3CX Phone System server. 

b.) Set the "SIP Registration" field to "Yes".

c.) Set the "Unregister on reboot" field to "Yes".

d.) Click the "Update" button at the bottom of the page.

7. Whilst on "Profile 1" scroll down to the codec section.

Profile 1 Codec Settings

Configure the codec priority as shown in the above screenshot with PCMU first, followed by PCMA.

8. Dial Plan Settings

Set the "Dial Plan" to read {[*x]+} then click the update button.


FXS port Settings

9. Click on the “FXS ports” tab at the top of the page. In the “User Settings” table, the rows represent the extensions connected to the gateway. Configure each line as follows:
a. In the “SIP User ID” field, enter the User Name for the extension number.
b. In the “Authentication ID” field, enter the Authentication ID for the extension as created in the 3CX Phone System Management Console.
c. In the “Authentication Password” fields, enter the Password that you entered for the line in the 3CX Phone System Management Console.
d. Repeat steps a to c for each extension, then click the “Update” button at the bottom of the page.

10. Reboot the device when all configuration settings have been applied.

      VOIP Gateway Configuration Guides