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Installation, Maintenance and Operation Manual V24a (June 2012)
British Telecommunications plc 2012
By default, the General Purpose outputs (GPOP’s) have the following specific purposes:
GPOP1: Local path fault output (BSIA Form 175 mode)
GPOP2: ARC controlled output
GPOP3: Return path signalling (RPS) output (in conjunction with input pin 4)
WARNING
Connectors J600, J800, J1000, J1300, J1301 and J1400 have been classified as SELV and
shall only be connected to approved SELV circuits. If the circuit to be connected to these
terminals is not SELV, a regulatory authority compliant isolation unit must be used. SELV
circuits are determined in IEC60950.
For basic installations the wiring of GPOP’s is not required.
Where local comms fail reporting is required in compliance with BSIA form 175 then make the following
connections.