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BT Versatility User Manual

Page 33

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BT Versatility
Installation and maintenance Manual

32

Four wires per Extension are connected at the Main Equipment. Spare wires must be neatly laid back
away from the connectors. To prevent cross talk or interference, cable pairs should not be split or the

spare wire of cable pairs used.

All Extensions should connect into standard line jack units. Extension cabling
should not be exposed to high voltage surges, (for example, surges induced by

lightning or neighbouring high current-carrying cables). If this is a possibility
external protection of the Main Equipment and Extensions using ‘earthed line

surge protectors’ is essential.

Connector pin- out

Function

RJ 12 pin out

A Speech

Pin

2

B Speech

Pin

5

C Data

Pin

1

D Data

Pin

6



Standard 4-Wire IDC Krone connector

A Speech - LJU Pin 2

B Speech - LJU Pin 5

C Data - LJU Pin 1

D Data - LJU Pin 6