Transcript
PD-119 Iss 2 Bell System Connecting more than 4 phones or Extension sounders(RT27) to a 1 button/way DC System Connect the power supply negatives together if more than 1 in the system Phone or RT27 Phone or RT27 O I Phone or RT27 I O I O Phone or RT27 O I Phone I or RT27 O CW1308 or CAT5 type CW1308 or CAT5 type 2 1.0mm CSA PS4 POWER SUPPLY + 1.0mm CSA N/O COM N/C Electrical Cupboard 89 Relay COIL To the Call Button Notes 1. The Phones must be star-wired (separate cable to each phone). 2. Follow the standard DC phone wiring diagram, changing the call button wiring to that shown here. 2
