How to Configure a Grandstream HT Series FXS Gateway with 3CX
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Configuring Grandstream HT Series FXS VoIP Gateways

Configuring Grandstream HT Series FXS VoIP Gateways

Supported Models Grandstream HT801, HT802, HT812, HT814

FXS gateways connect internal analog devices such as fax machines and analog phones and register them as extensions / fax extensions to your PBX. Those extensions can be addressed as normal phones, however, their functionality is limited due to the capabilities of the analog technology.

Notes:

  • The device must be local to 3CX, in the same subnet and/or locally routed subnet (including site to site VPN)
  • Ensure that you have created the extensions, (or fax extensions), before adding the FXS gateway to the PBX.

Configure Grandstream HT Series FXS VoIP Gateway with 3CX

Supported Models Grandstream HT801, HT802, HT812, HT814

Step 1: Create Fax extension (Optional)

Step 2: Add and Choose Device

Step 3: Configure the Gateway

Step 4: FXS Line Setup

Step 5: Prepare the Grandstream FXS Gateway

Step 6: Update the Firmware (If firmware is not the latest)

Step 7: Upload the configuration to the gateway

Step 1: Create Fax extension (Optional)

If the FXS Gateway will be used to connect fax machines to the PBX, “Fax Extensions” must be used instead of using a regular extension.

  1. Go to the 3CX Management Console.
  2. Navigate to “FAX Extensions → +Add”.
  1. Define the “Fax Extension”, the “Fax Extension Authentication ID” and the “Fax Extension Authentication Password”.

Step 2: Add and Choose Device

  1. Navigate to “FXS/DECT” within the 3CX Management Console and select “Add FXS/DECT”:

  1. Select Brand: Grandstream
  2. Select Model/Device: Grandstream HT812 or Grandstream HT814
  3. MAC Address: Enter the “WAN MAC Address” of the Grandstream gateway (Without colons or dashes)
  4. Press “OK” to create the device.

Step 3: Configure the Gateway

  1. Verify the settings in the General tab of the Gateway settings page.
  2. If using the HT81x Gateway for faxing, choose the fax sending Transmission Mode.
  • FAX in T.38
  • Fax in Audio G711(Pass Through)

Step 4: FXS Line Setup

  1. Go to the Extensions tab
  2. Select the extensions you wish to have configured on this device.
  3. Click OK to complete the configuration of the Gateway device.

Step 5: Prepare the Grandstream FXS Gateway

Make sure that your Grandstream device is factory reset. If not, reset the Grandstream FXS Gateway by pressing and holding the “Reset” button for about 7 seconds.

The Grandstream FXS gateway is configured, by default, to have an IP Address assigned via DHCP. To find out the IP Address defined by the Gateway:

  1. Connect an analog telephone device to either Port 1 or Port 2
  2. Pick up the receiver. A dial tone should be heard
  3. Dial *** (3 times the star symbol)
  4. You should hear the prompt “Enter a menu option”
  5. Dial 02 (zero two)
  6. You should hear the prompt “IP Address” followed by the IP Address being read out.
  7. Connect via your browser to the IP Address mentioned in the steps above
  8. The default username and password is: admin / admin
    (This will be changed later on when the device is provisioned)

Step 6: Update the Firmware (If firmware is not the latest)

  1. Download the latest firmware for your device from here.

  1. Go to Advanced Settings.
  2. At the bottom of the page, go to the Upload Firmware option and click Upload from local directory.
  3. Browse to the downloaded firmware file.
  4. Click Open

  1. Click Upload Firmware

After a few minutes, you will be able to log in to the device and start using it again.

Step 7: Upload the configuration to the gateway

  1. Go to the FXS/DECT page in the Management Console.
  2. Select your gateway device.
  3. Click Edit

  1. Right click the Provisioning Link and select Save Target as, and save it to your disk. This XML file will be the configuration file of your gateway.
  2. Log on to the gateway via web browser, using the default username and password, as mentioned above.
  3. Go to the Advanced Settings tab.
  4. At the bottom of the page, click Upload from local directory from the “Upload Configuration” option.
  5. Click Choose File
  6. Navigate to the XML file you downloaded from the 3CX Management Console.
  7. Click Open
  8. Click Upload Configuration

During this time the gateway will apply the configuration to the gateway. When the gateway is ready, you will see the Power LED on, The WAN LED on, as well as the LEDs for the ports which you have configured. You will be able to see the normal extensions status in the Extensions page of the PBX. If you are using FAX Extensions, you will see the status of these in the System Extensions page.

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