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3. Installation
3. If other apparatus is required to share the telephone line with the inter-
nal communicator (series apparatus), connect the main apparatus to the
series switched line connections marked A1, B1.
Caution: The connection of only one such series apparatus is allowed
to be connected between a main apparatus (e.g., telephone)
and the PSTN.
Take care to ensure that the A and B line are connected correctly ( i.e.
correct polarity). The internal communicator continuously monitors the line for
Ringing tones.
5 or A
2 or B
Primary
Line
Diverted
Line
A
B
B1
A1
BT master Box
(Exclusive Line)
Telephone line to other equipment
for example: Fax, answer machines.
Figure 20. Connecting the Internal Communicator
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