How to tell if phone is pulling config from option 66

Quick Way

• If you setup a phone to pull a config from your PBX and its never hitting the PBX for a config file most likely you have option 66 enabled on your network which overrides what the phone has for a config server.

• To verify if option 66 is telling the phone to get a config from somewhere else log into the phone GUI

• Navigate to Status and look for the section called Config Provision URL which will show you what IP or FQDN the phone is using to receive its configuration file from.

Long Way

• If you setup a phone to pull a config from your PBX and its never hitting the PBX for a config file most likely you have option 66 enabled on your network which overrides what the phone has for a config server.

• To verify if option 66 is telling the phone to get a config from somewhere else log into the phone GUI

• Navigate to Management > Configuration

  

• Press the Download button under the Download System Log

  

• Open up the syslog and look for line called 

  • RTOS_Upgrade: DHCP Option, server path:

• This example will show a phone receiving option 66 to 192.168.0.2

[08-12 14:15:05 50:15:c8] RTOS_Upgrade: DHCP Option, server path: 192.168.0.2
[08-12 14:15:05 50:15:c8] RTOS_Upgrade: Will Parse Config Server Path 192.168.0.2
[08-12 14:15:05 50:15:c8] ParseSerPathStr: file is 192.168.0.2
[08-12 14:15:05 50:15:c8] ParseSerPathStr:====== addr is 192.168.0.2
[08-12 14:15:05 50:15:c8] ParseSerPathStr: ip is 192.168.0.2, 0xc0a80002