User guide

73BusinessPhone – Cordless DT412/DT422
Other Useful Features
Doorphone
The doorphone is used to monitor the admission to your company,
i.e. you can open the doorlock from your Cordless.
Answering Doorphone calls
æ Press.
You will be in speech connection with the calling party.
Opening of the doorlock
After you have answered the Doorphone, you can open the door
making an inquiry to the door-opener’s directory number.
R Press (see display).
å Dial the door-opener’s directory number.
Please ask your system administrator for the number.