Business Support

Configuring your Grandstream HT503 ATA

Follow the instructions below to configure the profile rule for your Grandstream HT503 ATA (analog termination adapter), it provides one analog FXS port and one FXO port.

  1. Connect your laptop or PC to the ATA’s LAN port using an ethernet cable.

    Note: The device will give you an IP address initially due to the default setting in the device configuration of NAT and DHCP server. The IP address of the unit will be by default and can be accessed via a web browser by using the IP address. This DHCP server is turned off and becomes passthrough once the device receives its initial configuration from the CenturyLink Hosted Server.

  2. In web browser, put in URL & Enter:

  3. Default password is admin.

  4. Once a device has pulled configuration the password is changed to 235711.

    Note: The new password is indication that a device successfully pulled the initial configuration.

  5. Go to Advanced Settings tab.

  6. Update Firmware Upgrade and Provisioning Upgrade Via setting to: HTTPS.

  7. Update the Firmware Server Path. Copy & enter the following URL:

  8. Update the Config Server Path. Copy & enter the following URL:

  9. Update Allow DHCP Option 66 or 160 to override server to No.

  10. Save.

Grandstream HT503