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
BT Versatility
Installation and Maintenance Manual
Cabling the unit
32
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
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