How to Configure Grandstream GXP Series

Grandstream GXP 1610, 1615, 1620, 1625, 1628, 1630, 1760, 1760W, 1780, 1782, 2130, 2135, 2140, 2160, 2170 models

Important

  • Used phones previously connected to another PBX system need to be reset first. See how to do this here.
  • These devices are supported directly by the vendor. If you need to upgrade the firmware, obtain the appropriate firmware version directly from the device vendor. Then navigate to Phones > Options > Enable Untested / Unsupported Firmwares, and go to Phones > Firmwares to upload and deploy the firmware as required.
  • Known Limitations
  • The first two keys are configured as line keys (via the template), and can't be changed, otherwise the phone will not be able to make calls
  • Only the GXP2140 and GXP2170 models support the expansion modules
  • GXP1630 only: In the Extension Settings, you should set the first BLF to be assigned to a Line Key, otherwise the phone will not be able to make calls
  • GXP16 series models don't support the expansion modules and logo provisioning

About the Grandstream GXP Models

  • GXP21 Series: Ideal for receptionists, front desk workers and desk employees. High End IP phones for workers who need access to advanced telephony features, multiple line support, and mobility options. Cost starts in the region of $110.
  • GXP17 Series: These are Mid-Range IP Phones designed for efficiency and productivity ideal for growing businesses. Cost starts in the region of $95.
  • GXP16 Series: An affordable telephony solution Basic IP Phones ideal for users that do not require advanced features. Ideal for hotel rooms, information booths, and warehouse deployments. Cost starts in the region of $40.

Step 1: Identify your Grandstream GXP Model and MAC Address

Be sure you follow the steps for the right phone model. You can find the model and MAC address on the label at the undersight of your device, or by pressing the “Menu or OK > Status > System Status” on the phone. Take a note of the MAC address, you will need this for the configuration.

Step 2: Add The Phone to the Extension

From the admin console in your web client:

  1. Go to “Users” and select the user you want to add a phone for.
  2. Click on the “IP Phone” tab. Click “Configure a phone” to add a phone.
  3. Now select your phone model from the dropdown menu.
  4. Enter the phone’s MAC address without dashes or colons, and click “Add phone”.

Step 3: Router Phone, SBC or LAN?

  1. If 3CX is on the cloud, you must use a router phone or SBC:
  1. If it is not a router phone you need to specify one or an SBC.
  2. If the device is a router phone, you can connect it directly as a router itself.
  1. If 3CX is on premise or self hosted, you have an additional option, you can select “Local LAN/VPN”.
  2. Click “Add Phone” to save the phone configuration for this extension.

Step 4: Connect the Phone

3CX will now create provisioning information for the phone and make these available on the provisioning URL. The phone must connect to this URL to retrieve its configuration information and authentication details. You have the following options:

  1. RPS - Connect the phone to the network within 14 days. If it is already connected, restart it. The phone will be configured automatically and restarted.
  2. PNP - If 3CX is on premise or connected via SBC, you can connect the phone to the LAN and look for it in the PNP dialog (Admin Console > Phones > PNP Phones). Right click and assign it to the extension you configured above.

  1. Alternatively you can login to the phone's webUI and enter the URL manually. You can also use DHCP option 66.

See Also

Last Updated

This document was last updated on 19 February 2026

https://www.3cx.com/sip-phones/grandstream-gxp/