Security; Block Extension - Ericsson DT400 User Manual

*72#
#72*
BusinessPhone – Cordless DT400/DT410/DT420/DT430

Security

You can block your extension in order to prevent unauthorized use
of your telephone, e.g. if your external calls are placed on a specific
account number.

Block extension

T
Press
Dial to block your extension
Verification tone.
Un-block extension
T
Press
Dial
z
Dial your password
#
Press to re-open
Verification tone. Your extension is open for use.
Security
61