Avaya Communication Manager Administrator's Manual page 112

Managing Phones
2420 DCP telephone
6
Press # if you are dialing from the target station (or dial the phone's extension to be downloaded).
7
Place the phone on-hook within 4 seconds after the confirmation tone.
The phone is placed in a busy-out state (not able to make or receive calls) and displays
"Firmware Download in Progress"
phone displays error messages and a success message before rebooting.
8
When the download completes, the phone reboots and is released from the busy-out state.
112
, the amount of the file downloaded, and a timer. The
Administrator's Guide for Avaya Communication Manager
November 2003