Ericsson DT288 User Manual page 45

DOORPHONE
Answering door-
phone calls
Opening of the
doorlock
TANDEM
CONFIGURATION
To activate the
tandem configuration
(continued)
BusinessPhone 250 - Portable DT288
BusinessPhone 50 - Portable DT288
The doorphone is used to monitor the admission to your
company, i.e you can open the doorlock from your phone.
Press
You will be in speech connection with the calling party.
After you have answered the doorphone, you can open the
door making an inquiry to the door-opener's directory number
Press
Dial the door-opener´s directory number
Please ask your system administrator for the number.
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 tele-
phone") and need to be mobile within their company's build-
ing with their own portable (the "secondary telephone").
Basically the tandem configuration works as follows:
Dial to log on the secondary telephone
2 2 n n d d U U S S E E R R
L L O O G G G G E E D D O O N N
OTHER USEFUL FACILITIES
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