BT HERALD/PENTARA WIRING

Extension Wiring for a Standard POT Telephone using a Master Line Jack Unit (-/1A)

System Colour Socket
A WHITE/Blue 5
B BLUE/White 2
Earth WHITE/Orange 4
 

Extension Wiring for Feature Phones using Secondary Line Jack Unit (-/3A)

System Colour Socket
A WHITE/Blue 5
B BLUE/White 2
C WHITE/Orange 4
D ORANGE/White 3
 PARTS LIST 
  
 
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Last revised: November 04, 2021

FM