Below are a list of the "Mute" Codes for Shoretel IP Phones.  These codes will perform some common ShoreTel tasks without physically power cycling the phone.

To Clear Cached Values
+ CLEAR (25327) #

To Reset A Phone (Reboot)
+ RESET (73728) #

To Enter Setup
+ SETUP (73887) #

View Current Configuration Settings
+ INFO (4636) #

Ping From Phone
+ PING (7464) #

Factory Reset A Phone
+ RRAMOS (772667) #       *this will prompt you to enter 1234 as the password before reset.