How to auto-provision Grandstream GXP-2000 and GXP-2020 for 3CX Phone System (v5)
IMPORTANT This guide has been tested with the following system information:
Program-- 1.1.4.18 Bootloader-- 1.1.4.6. Be aware that different firmware revisions may have different web interface formats and functionality. See compatibility list for latest phone firmware revisions that we have tested with 3CX Phone System.
This feature is only available in the commercial edition of 3CX Phone System.
After you have created the extension in 3CX Phone System, and entered the MAC address of the phone as well as specified the model, you need to configure the phone to retrieve the configuration from the 3CX Phone System HTTP server:
- Switch on the phone. Once the telephone set is booted up, the phone set’s IP will be displayed on the screen. Keep a note of the IP Address.
- If the phone set was used before, reset the phone set to factory defaults. To reset to factory defaults, follow the steps on page 29 of the phone set’s manual (http://www.grandstream.com/user_manuals/GXP2000.pdf).
If the phone is new you can ignore this step.
- Assuming that the phone set’s IP is 10.172.0.127, use a web browser to access the phone set’s configuration, using this URL: http://10.172.0.127.
- When asked for the password, input the phone set’s password. The default password is “admin”.
- In the “Firmware Upgrade and Provisioning Section”, select Upgrade Via HTTP and in the “Config Server Path:” input 10.172.0.116:5481/provisioning, as shown in the screenshot below. The IP must be the IP of the 3CX Phone System machine.
- In the “Allow DHCP Option 66 to override server” option, tick No, as shown in the screenshot above.
Saving configuration and reboot the phone.
- Click on the Update button at the bottom of the page to save the new HTTP provisioning settings.
- Once configuration changes are saved, click on the Reboot button to reboot the phone set and retrieve the configuration from the 3CX PBX Phone System.
SIP Phone Configuration Guides 
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