Specifications

Personal Security Data Book |95
• Up to 4 telephone channels
• Programmed options for:
- speech
- 6 - 11 digit display
- “meet” me
- number transfer
- talk-back
- talk-through
- control tones
• Inputs for 8 remote contacts
• Memory security against power
failure
• Suitable for most PABXs -
touch-tone or rotary dial
• May be connected to special
interface or extension line
• Simple keyboard programming
• Complete microprocessor control
• Call conversion possible
Introduction
The Bosch LBB 5840 microprocessor controlled coupler
has been designed as an interface between almost any
PABX and a Bosch DP6000 Digital Paging System.
The coupler allows people carrying DP6000 receivers or
transceivers to be paged directly from internal telephone
sets.
Operation
After the caller has selected a prefix on the telephone, he
will hear the free tone.When the PABX and the coupler
are suitably equipped,up to four people may make calls
simultaneously. When the free tone is heard, the caller
may dial another prefix to indicate the method of
communication: speech,“meet me”or digital display. If
the coupler is preset for only one mode of operation,
there is no need for a prefix.The caller then dials the
receiver number, and if required, the code for the call
tone and the digits to be displayed on the receiver.
When the call is transmitted, the caller will hear the
transmission tone. If the called receiver was in the storage
rack, the absence tone will be sent to the caller and the
connection will be interrupted.
When set for the speech mode, the coupler will switch to
the speech mode and speech (or talk back) will be
possible for a time depending on the programming of the
coupler. Depending on traffic density, the speech time
may vary from 10 to 180 seconds. When set for the “meet
me”mode the call is repeated until a preset time expires.
In the meantime, the caller hears a wait signal. If the
called person dials a second prefix within that time, the
PABX and coupler will connect him to the caller. They
can now speak for a preprogrammed time.With the 5-
digit programme, the call is transmitted and the coupler
resets.If the coupler is equipped with more than one
input channel, more people can use it simultaneously.
Because there is only one channel to transmit on, only
one person can use speech at any one time. A second
caller requiring speech will receive a wait tone.
LBB 5840/00
Telephone Coupler
Communication you can rely on