Provisioning a Polycom for 3CX Phone System


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. To fully take advantage of this, you can configure your DHCP Server to also deliver to the phone the location from where it can retrieve its configuration file – the result will be completely automated phone configuration.

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. If you want to use the phone's Memory Keys, you can set the BLF fields to monitor the status of other extensions and 3CX Shared park extensions.
  7. 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
  8. Now go to the phones node, select the phone and click 'Reprovision Phones'. The phone will be rebooted and will apply the new configuration settings.

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
    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.
    This is the recommended method for larger networks.
    • Option 66 examples per phone

      For Aastra, Grandstream, Polycom and Yealink Phones Option 66 string value should look like this

      Snom Phones{mac}

      Cisco SPA5XXG Phones$MA.xml

  2. It is not possible to specify the provisioning path manually for Polycom phones.
    Note: When Option 66 is set up, Polycom phones will expect to retrieve all necessary files from the string specified in 'option 66'. For example if the Option 66 sting is configured to', the phone will go to the provisioning folder and before requesting configuration files, it will check if there are any available firmware updates - 'bootrom.ld' and 'sip.ld'. Therefore, it is important that when you download the firmware for Polycom, both the Bootrom and the sip firmware are extracted and placed in the provisioning folder.

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. Phone firmwares can also be upgraded network wide.