Conference Unit; Alarm Interface Unit - Ericsson BUSINESSPHONE 250 User Manual

OPTIONAL EQUIPMENT
HEADSET
(continued)
Handset to headset
Headset
Headset with
group listening
Headset to handsfree
Headset
Handsfree to headset
Headset

CONFERENCE UNIT

ALARM
INTERFACE UNIT
70
Press the headset key (pre-programmed)
Press to toggle between headset with or without
group listening
Press
Press the headset key (pre-programmed)
Press the headset key (pre-programmed)
For conferences with many participants, the conference unit
enhances the speech quality. It provides full duplex and high
quality conversation possibilities.
This plug-in module is fitted into the bottom of the telepho-
ne. It makes it possible to transfer alarm signals from various
devices via the telephone to the exchange and to a pre-defi-
ned extension. A special circuit layout provides maximum
functional security.
To a telephone fitted with an alarm interface unit you can
connect devices such as bathroom alarms for hotel rooms,
emergency alarms for hospitals, bank security alarms and
supervision of machines.
BusinessPhone 250 - Executive Telephone
BusinessPhone 50 - Executive Telephone