User guide

63BusinessPhone – Cordless phone DT290
Security
Security
You can block your extension in order to prevent unauthorized use
of your phone, e.g. if your external calls are placed on a specific
account number.
Block Extension
*72#.i Dial and press to block your extension
Verification tone.
Wait for the call icon to stop flashing
,| Press to finish the procedure
Un-block Extension
#72* Dial
Z Dial your password
# .i Press to re-open
Verification tone. Your extension is open for use.
Wait for the call icon to stop flashing
,| Press to finish the procedure