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Grandstream HT814 FAQ

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Back to FAQs
What is Grandstream HT814?

The HT814 is a 4-port Analog Telephone Adapter (ATA) that allows you to connect up to four analog telephones or fax machines to a VoIP service over an Ethernet network. It includes a NAT router and supports SIP accounts.

What kind of devices can I connect to the HT814?
  • Analog phones
  • Cordless phone bases
  • Fax machines
  • POS devices (with VoIP fax support)
How do I access the HT814 web interface?
  1. Power and Connect the HT814
    • Plug in the power adapter.
    • Connect the WAN port of the HT814 to your network (router or switch).
    • Plug an analog phone into one of the FXS ports (e.g., Port 1).
  1. Find the IP Address Using the Phone
    • Pick up the handset on the analog phone.
    • Dial *** to enter the IVR (voice menu).
    • Dial 02 to hear the device’s IP address (e.g., “192.168.1.100”).
  1. Log In via Web Browser
    • On a computer connected to the same network, open a web browser.
    • Type the IP address you heard into the address bar (e.g., http://192.168.1.100).
    • Press Enter to load the login page.
  1. Enter Login Credentials
    • Username: admin
    • Password:
      • For older units: admin
      • For newer models: Check the device label on the bottom for the unique admin password.
  1. Access and Configure Settings
  • Once logged in, you can:
    • Set up SIP accounts under each FXS port tab
    • Adjust network settings
    • Perform firmware upgrades
    • Access logs and diagnostics
How do I reset the HT814?
  1. Hardware Reset (Using the Reset Button)
    • Locate the reset button on the back of the device (a small pinhole).
    • Use a paperclip or pin to press and hold the reset button for about 7 to 10 seconds.
    • Release the button when the LEDs start blinking or the device reboots.
    • The HT814 will restore factory default settings.
  1. Software Reset (Via Web Interface)
    • Log in to the HT814’s web interface (use the device IP address).
    • Navigate to Advanced Settings > Factory Reset.
    • Click Reset or Restore to Factory Defaults.
    • Confirm the action.
    • The device will reboot and reset.
How do I update the Grandstream HT814?
  1. Download the latest firmware file from Grandstream’s official website.
  2. Access the HT814 web interface by entering its IP address in a browser and logging in with your admin credentials.
  3. Go to Advanced Settings, then Firmware Upgrade and Provisioning.
  4. Under Firmware Upgrade, click Browse and select the downloaded firmware file.
  5. Click Upload Firmware and wait for the process to finish.
  6. Reboot the device when prompted to apply the update.
What are the LED indicators on the HT814 and what do they mean?

Power: Solid green means the device is powered on.

Internet: Blinking indicates network activity; solid means the network is connected.

 FXS 1 to FXS 4 (phone ports):

  • Solid green means the port is registered to a SIP account.
  • Blinking indicates a call in progress or activity.
  • Off means no device is connected or the port is not registered.
How do I set up call forwarding on the HT814?
  1. Log in to the HT814 web interface using its IP address.
  2. Go to the FXS Port tab corresponding to the phone line you want to configure (e.g., FXS Port 1).
  3. Scroll down to the Call Features section.
  4. Enter the forwarding number in one or more of the following fields as needed:
    • Unconditional Forward To (for all calls)
    • Busy Forward To (when the line is busy)
    • No Answer Forward To (when calls are not answered)
  1. Set the number of rings before forwarding for No Answer Forward.
  2. Click Apply and then reboot the device if prompted.
Does the HT814 have a built-in router?

Yes, the Grandstream HT814 includes a built-in Gigabit NAT router. This feature allows the device to handle routing speeds up to 100 Mbps, making it suitable for small to medium-sized networks.

What are the equipment requirements for Grandstream HT814?

Essential Equipment

  1. Analog Telephones or Fax Machines
    • Connect up to four devices using standard RJ11 telephone cables.
  2. Internet Connection
    • A stable broadband connection via a modem or
  3. Ethernet Cables
    • At least two Cat5e or Cat6 cables: one for connecting the HT814 to your network and another if you plan to connect a computer or additional device through the LAN port.
  4. Power Supply
    • The HT814 requires a 12V/1.0A DC power adapter, which is typically included in the package.