Specifications

Personal Security Data Book | 103
• Interfacing to PABX or DP6000
paging systems
• Dial-out and dial-through
• DTMF or pulse dialling
• Built-in busy tone detector
• Microprocesor controlled
• Easily programmable
• Wall mounting unit
Introduction
The Bosch Dial Coupler LBB 6042/00 has been designed
for use in DP6000 paging systems. It is intended for use
as a coupling device to enable calls from one dial
transceiver to another dial transceiver, to a paging
receiver or to a normal talk-back transceiver (dial-
through function). Moreover, it enables calls from a dial
transceiver to a normal telephone extension (dial-out
function). The coupler can be set to DTMF or pulse
dialling.
Operation
Dial-through
In order to establish a call into the paging system (dial-
through) the caller must first select the prefix concerned.
The coupler will generate the free-tone.On hearing the
free-tone the caller may dial the pager address and, if so
required,the call tone digit and information digits for the
paging call. After the paging call has been transmitted,
speech and talk-back are possible between the dial
transceiver that made the call and the pager that was
called. To enable this function a DP6000 telephone
coupler of the type LBB 5845 or LBB 5840 should be
used to generate the paging call.
Dial-out
By means of a second prefix it is possible to dial directly
to an extension line or (if permitted) to an outside line of
almost any PABX and thus establish a speech
conversation between the dial transceiver and the
telephone set.
The maximum number of digits to be dialled can be
programmed in the dial coupler by means of a
hexadecimal rotary switch.When this number of digits
has been selected, the coupler automatically switches over
to the speech mode.In case less digits are needed than
the number fixed on the rotary switch, the call string
should be ended with a transmit call command,e.g. *.
The paging system has only one transmission channel.
This means that only one speech conversation can take
place at one time. Therefore, a second caller has to wait
until the line is free again.
LBB 6042
Dial Coupler
Communication you can rely on