Provisioning a Grandstream GXP280, GXP285, GXP1200, GXP2000, GXP2010, GXP2020 for 3CX Phone System

This guide has been tested for Grandstream phones with firmware version 1.2.4.3.  Be aware that different firmware revisions may have different web interface formats and functionality. This guide is applicable to the following Grandstream phone models: GXP 280, 285, 1200, 2000, 2010, 2020.

The easiest way to set up a phone for use with 3CX PhoneSystem is to use the built-in provisioning functionality inside 3CX PhoneSystem. This will allow the phone to configure itself by retrieving a 3cx-generated phone configuration file.

This is a 3-step process:

  1. Enable provisioning for an extension to create the phone's configuration files
  2. Tell the phone where to get its configuration files from.
  3. Optionally configure advanced options such as Time Zone from the Phone Provisioning node

Enabling Provisioning for an Extension

  1. Select the extension you want to provision and go to the "Phone Provisioning" tab
  2. In the "MAC Address" field, enter the phone's 12-character MAC Address. This information is normally printed on the back of the phone.
  3. In the "Model" field, select the model number of the phone you want to provision.
  4. Select the preferred display language for the phone. (Note Language packs need to be downloaded and placed in the firmware folder in 3CX.*)
  5. If your 3CX Phone System machine has multiple network interfaces, select the interface IP Address through which the phone will be connecting to the 3CX PhoneSystem machine using the "Select Interface" drop down. You can skip this step if you have only one network card in your 3CX Phone System machine.
  6. Click on the "OK" button at the bottom of the page to create the configuration files. These will be created in a folder on the web server, and picked up by the phone upon boot-up.

Getting the Phone to Retrieve its Configuration Files

Now the phones must be told to download the configuration files from the central server. There are two options for doing this:

1. Provisioning using DHCP Option 66

For larger networks, the preferred method is to set your IP phones to retrieve the provisioning URL automatically via DHCP Option 66. DHCP Servers can be set to not only deliver IP Addresses, DNS Servers, and Router IP Addresses to network devices, but can also specify a Boot Server Address, which most SIP Phones use to obtain the URL for retrieving configuration files. For more information, see this configuration guide.

2. Provisioning without using DHCP Option 66

If you do NOT want to use DHCP Option 66, you will need to manually tell the phone where to retrieve its configuration files. To do this:

  1. Start up the phone and identify its IP Address from the LCD display. For this example we will assume the IP Address of the phone is 10.172.0.100, and the IP Address of the 3CX PhoneSystem machine is 10.172.0.15
  2. Point your browser to the web interface of the phone: http://10.172.0.100. The default password is "admin".
  3. Go to the "Advanced Settings" page and scroll down to the "Firmware Upgrade and Provisioning" section
  4. Set the "Upgrade Via" field to "HTTP"
  5. Set the "Config Server Path" field to: http://10.172.0.15:5000/provisioning/ 
  6. Set the "Allow DHCP Option43 and Option66 to override server" field to "no"
  7. Click the "Update" button at the bottom of the page, and then click the "Reboot" button. Your phone will restart. After rebooting, the phone will retrieve its configuration files and register with the 3CX Phone System. This can be verified via the "Extension Status" page of the 3CX Management Console.

Advanced configuration options (Time Zone, DST, Firmwares, Phone Display Language)

You can configure Time Zone, DST and other options from the Phone provisioning node. From here you can also edit the provisioning templates and include custom configuration options into the templates. For more information:

For more information on configuring IP Phones, visit our Support blog   

SIP Phone Configuration Guides (Preferred)

SIP Phone Configuration Guides (Supported)

SIP Phone Configuration Guides (Tested)