Grandstream 16,24,32, or 48 Port FXS Hosted Voice Gateway GXW4200 series.

The Grandstream GXW4200 series is an FXS-port Hosted Voice gateway that can connect analog devices such as phones and faxes to a Hosted Voice network. Support for several voice/fax codes, 16, 24, 32 or 48 RJ11 FXS ports, and a 50-pin Telco connector make the GXW4200 series versatile. They are a high-density Hosted Voice gateway that is fully compliant with SIP standards and broadly interoperable with various Hosted Voice systems, analog PBX, and phones on the market. The GXW4200 series features 16, 24, 32 or 48 FXS analog telephone ports, superb voice quality, rich telephony functionalities, easy provisioning, flexible dialling plans, advanced security protection, and excellent performance in high-volume voice calls.

This analog gateway offers hotels and small-to-medium businesses a cost-effective hybrid IP and analog telephone system. It allows them to enjoy the benefits of Hosted Voice communications while preserving investment in existing analog phones, fax machines, and legacy PBX systems.

User Manual

Grandstream GXW4200 Series Features & Specifications:

• 16, 24, 32 or 48 telephone FXS ports with both RJ11 and 50-pin Telco connectors, as well as per-port LED
• Gigabit Ethernet and a backlit 128x32 graphic LCD with support for multiple languages
• 2 SIP server profiles per system and an independent SIP account per port
• Supported voice/fax codecs include G.711, G.723.1, G.726, G.729A/B, iLBC, T.38 Fax
• Advanced carrier-grade 128ms-tail-length line echo cancellation
• Over-voltage and over-current protection (ITU-T K.21 Basic Test Level)
• Support VMWI, NEON LED and stutter tone for message waiting indication
• Automated provisioning using TR-069 or AES-encrypted XML configuration file; TLS/SRTP/HTTPS for advanced security and privacy protection

Provisioning a Gateway in UC Hospitality 

1. Select the Inventory tab.
2. Select the Phone Hardware tab.
3. Click the Add button and select Add Gateway.
4. The Add Gateway Model loads. Select the Model from the Model dropdown.
5. Enter the MAC address for the Gateway.
6. Select Autofill. The Autofill Ports modal opens. Select whether you would like to include Users, Rooms, and Common areas (this is specific to what is connected to the Gateway). Enter the starting port and the ending port and click Submit. A tone generator must be used to confirm the room/area associated with each port on the Gateway.

To connect it to the network, connect analog phones, and configure it through its web interface, first connect the gateway to the network using an Ethernet cable. Then, use an RJ21 to RJ11 cable to connect your analog phones to the RJ21 port on the back of the gateway. Finally, access the gateway's configuration interface via a web browser and configure it to register with your Hosted Voice provider or PBX.

Detailed Steps if you need to adjust port settings after adding the device to the portal:

1. Connect to the Network:

Connect an Ethernet cable from the LAN port on the GXW4200 series gateway to the router or network switch. 
Ensure the gateway receives power through PoE if supported or by connecting the power adapter.

2. Connect Analog Devices:

Using an RJ21 to RJ11 cable, connect your analog phones or fax machines to the RJ21 port on the back of the GXW4200 series gateway.

3. Access the Configuration Interface:

Find the gateway's IP address (you may need to check your router's DHCP client list or use a network scanner). 
Open a web browser and enter the gateway's IP address. 
Log in using the default username and password (usually "admin"  and "admin").

4. Configure the Gateway:

Navigate to the FXS Port settings. Configure each FXS port with the UC Hospitality settings (e.g., SIP User ID, Authentication ID, Password, SIP Server, etc.). 
Ensure you've created the corresponding extensions (or fax extensions) in UC Hospitality before configuring the gateway. 
Save and apply the changes.

5. Verify Registration:

Check the status of the FXS ports in the gateway's interface to ensure they are registered with your Hosted Voice provider or PBX. 
Test the connections by making and receiving calls from the connected analog devices.

Additional Notes:

Firmware Updates: Check for and install the latest firmware for your gateway to ensure optimal performance and security.

QoS: Consider configuring your network's Quality of Service (QoS) settings to prioritize Hosted Voice traffic, ensuring clear call quality.

Security: Be sure to change the default password and configure any necessary security settings for your gateway

Firmware Notes:

Version 1.1 20210805 (Tested on firmware 1.0.19.4)

If none was set via the GUI, set the template to include a default digit map. This fixes an issue where calls will not complete on newer versions of the gateway's firmware.

Version 1.2 20220825 (Tested on firmware 1.0.23.2)

• Remove the firmware upgrade URL so that firmware upgrades don't happen automatically.
• Disable SSH access.
• Set default web access to HTTPS.
• Disabled the user and viewer access (admin remains).
• Disabled the DHCP time zone option.
• Disabled option 66 after initial configuration.

Version 2.0 20221021 (Tested on firmware 1.0.23.5)

• Use the latest template from Grandstream that organizes the P values into logical groupings and includes information about the settings and valid values.
• Removed ringdown settings so that the provisioning file will not override custom settings.
• Set the DHCP time zone option to disabled.
• Disable option 66 after initial provision.
• Disable most call features like DID and Forward.

Version 2.1 20240619

• Add support for ring down with zero delay. (Starting at P4210, all FSX ports).
• Add support for polarity settings. This setting utilizes different profiles in the gateway to apply features to each port individually.
  Default: no change, use profile 1.
• Loop: Use profile 2, set Loop Current Disconnect (P893) to yes, and set Loop Current Disconnect Duration (P857) to 5000. 

Helpful speed dials:

*97: Read back port number.
*98: Read back the device name assigned to the port.
*99: Provision gateway without a reboot.

Pressing # before dialling a number will act as redial.