How to configure Polycom 320 & 330 for 3CX
Supported Models: Polycom 320, 330
Legacy phone support has been implemented to allow easy migration from an existing phone system to 3CX without the need to directly replace all existing IP phones. It is strongly recommended not to purposely buy these devices new or as a replacement. Legacy phone devices have a limited feature set and can only be supported up to a certain point by the 3CX Support Team - you may well need to contact vendor support directly for some matters. In this guide:
Step 1: Download Firmware & Copy to Provisioning Directory
These phones have been tested with 3CX Phone System V14 SP3 with the following firmware only:
- Polycom 320 - SIP Firmware 3.3.5
- Polycom 330 - SIP Firmware 3.3.5
Therefore you need to ensure that the phones are running this firmware. To do this:
- Download the Polycom 3.3.5 support files.
- Find the provisioning folder of your 3CX Install – by default it is something like:
Where XXXXXX is the randomly generated folder name of 8 to 12 characters.
- Place the content of the zip into this folder.
Step 2: Factory Reset the IP Phone
Before provisioning the IP phone, the phone must be brought back to factory defaults in case the device has residual settings of a previous configuration. To reset the device follow this blog post on how to factory reset Polycom IP phones.
Step 3: Configure the phone in 3CX
- Log in to your 3CX Management Console ⇒ Phone note ⇒ and press “Add Phone” and from the extension list select to which the IP phone shall be assigned
- Select the device Vendor/Model and enter Mac address of the device which can be found on the back of the device itself and select the corresponding model type.
- Optional settings include the phone’s “Time Zone” and, if applicable, the network card interface in case the server has more than one IP address to which the phone shall be configured.
- Take a copy of the “Provisioning Link” and save the configuration with OK
Step 4: Set the provisioning link using DHCP Option 66
Now the phone needs to know where to pick up the firmware files and configuration information. The only way to do this is by setting option 66 in your DHCP server.
If using a configurable DHCP server:
- Follow this guide: how to configure a phone using DHCP Option 66.
- When requested to, enter the string value taken in Step 5 in this format
e.g. http://pbx.mybusiness.local/provisioning/pc56bscs195k - where the FQDN resolves to the IP of your phone system.
Known limitations of Polycom 320 & 330 are:
- No PnP Support
- No STUN Support
- No SBC Support
- No Full CTI Support (Make Call Only)
- No BLF Functionality
- Manual DST Support
- No Admin Password Provisioning
- No LCD Languages
- No Distinctive Ringing for external, queues or ivrs
- Aastra 67i Series
- Cisco 79XX Series
- Cisco SPA
- Gigaset N510
- Panasonic KX-TGP500B01
- Polycom 301, 501, 600, 601 & 4000
- Polycom 321, 331, 335, 450, 550, 560, 650 & 670
- Polycom 5000, 6000, 7000
- Polycom VVX 101, 201, 300, 301, 311, 400, 401, 410, 411, 500, 501, 600, 601
- Yealink VP530
- Configuring & Managing IP Phones & Endpoints