This How-To covers adjusting the handset network/system settings on the ShoreTel 400 series handsets (420/480/480g/485g).


1: Open Config File

Browse to the following location on your ShoreTel Director Server:


From here, there should be the following config files:

custom.txt (global changes to all 400 series handsets)
custom_IP420.txt (changes to all 420 handsets)
custom_IP480.txt (changes to all 480 handsets)
custom_IP480g.txt (changes to all 480g handsets)
customIP485g.txt (changes to all 485g handsets)
custom_MAC.txt (changes to specific handsets based on the MAC address of the handset)

Note: Depending on whether you want to make this a global change, a change to specific types of handsets or single users will depend on which file you want to change.

2: Choose The Parameters To Modify

You can modify the below display settings in this config file:

Enable 802.1x Network (Default: On. Can be either On or Off)

DNS Address (Default: None. Must be a comma-separated list of IP addresses)

NTP Server Address (Default: None. Must be a comma separated list of IP addresses)

LLDP-MED Network Policy Caching (Default: On. Can be either On of Off)

PC Port Enabled (Default: True. Can be either True or False)

Diagnostic Servers (Default: None. Must be a comma-separated list of IP addresses)

Speakerphone Enabled (Default: On. Can be either On or Off)

HTTP Resources – for custom ringtones and wallpaper files (Default: <Headquarters server>/fileserver. Must be either an IP address or full URL path for a dedicated server. Typically, /fileserver points to the installation directory for the phone configuration files. By default this is C:\inetpub\ftproot\.)

Override Config Servers – overrides the configuration server specified in DHCP option tag 156 (Default: None. Must be a comma separated list of IP addresses)

Remote Syslogger – address of the server running the syslog server application (Default: None. Must be formatted as follows: <IP_address or DNS_name>:port:number;protocol whereby the protocol is either tcp or udp. Protocol and port number are optional. If none are set, it will use port 514 as the port and udp as the protocol)

Headset Type (Default: wired. Can be either wired or wireless)

Time Zone (Default: Pacific Standard Time. Other Values: must be specified in plain text)

Please see the below parameters that need to be entered in the config file:




3: Modify Config File

Add in the relevant parameters to the config file in the following format:


For example, if we wanted to disable the PC port and speakerphone, you would enter the following:



4: Save Config File

If you are creating this config file for a single extension, save the file as a new file and name it as follows:

custom_MAC.txt (where MAC is the MAC Address of the handset in question e.g. custom_00104928630b.txt)

Otherwise, just overwrite the existing config file as per the file names in step 1.

5: Reboot The Handset

Once the config file has been saved, reboot the handset and it should pull down the new config file.


After the phone has pulled down the new config file, check to see whether the changes have taken effect. If further adjustments are needed, modify the config file where necessary.

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