Aastra Dialog 4420 IP Basic - Other Useful Features

Other Useful Features
Dialog 4420 IP Basic50
Other Useful Features
Account Code (optional)
This feature is used to charge a call to an account number or to
prevent unauthorized calls from your phone. The Account Code
can have 1 to 15 digits.
u Lift the handset.
*61*z# Dial, enter the Account Code and press.
Press
Dial tone.
z Dial the digit or digits to get an external line and the external
number.