Operation Manual

53BusinessPhone – Cordless DT400/DT410/DT420/DT430
Other Useful Facilities
Doorphone
The doorphone is used to monitor the admission to your company,
i.e you can open the doorlock from your phone.
Answering doorphone calls
T
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.
Q
Press
z
Dial the door-opener’s directory number
Please ask your system administrator for the number.
Tandem configuration
The tandem configuration is a unit, consisting of two telephones
using the same directory number. One of the telephones is defined
as the “Primary” and the other one as the “Secondary”.
This function enhances the communication for users that, for
example, have a wired phone on their desk (the “primary
telephone”) and need to be mobile within their company’s building
with their own Cordless (the “secondary telephone”). Basically the
tandem configuration works as follows:
To activate the tandem configuration
T
Press
*28#
Dial to log on the secondary telephone
For incoming calls:
• Both telephones are treated as 1 single extension
.
For outgoing calls:
• Both telephones are treated as 2 separate extensions
.