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

Standard telephone, economyplus telephone

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Headset with

group listening

Headset to handsfree

Headset

Handsfree to headset

Headset

CONFERENCE UNIT

ALARM

INTERFACE UNIT

BusinessPhone 250 / BusinessPhone 50

Standard Telephone / Economyplus Telephone

Press to toggle between headset with or without

group listening

Press

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 tele-

phone. It makes it possible to transfer alarm signals from var-

ious devices via the telephone to the exchange and to a pre-

defined 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.

OPTIONAL EQUIPMENT

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Businessphone 50