NUMBER SCANNED FILES DESCRIPTION
13150 GBW Trunking Diagram 20 Line PABX.
13150 GBW Trunking Diagram 20 Line PABX.  MOD A  PABX with Aux. Service.
13160 GBW GBU RCCL 20 Line PABX Connecting Circuit (See GBW 14650).
13160 GBW 20 Line PABX Connecting Circuit (See GBW 14650).  MOD A  PABX with Aux. Service on Two Routes.
13170 GBW GBU RCCL 20 Line PABX. Enquiry Circuit (See GBW 14670).
13180 GBW Trunking Diagram 35/49 Line PABX.
13180 GBW Trunking Diagram 35/49 Line PABX.  MOD A  PABX with Aux. Service.
13190 GBW GBU RCCL 35/49 Line PABX. Connecting Circuit (See GBW 14660).
13190 GBW 35/49 Line PABX. Connecting Circuit (See GBW 14660).  MOD A  PABX with ‘Out’ Service on Two Routes.
13200 GBW GBU RCCL 35/49 Line PABX. Enquiry Circuit (See GBW 14680).
13210 GBW RCCL NOTES Extension Line Circuits 20 & 35/49 Line PABX's.
13210 GBW Extension Line Circuits 20 & 35/49 Line PABX’s.  MOD A  PABX with ‘Out’ Service on Two Routes.
13220 GBW GBU RCCL PABX. Exchange Line Circuit Cordless Switchboard.
13220 PABX. Exchange Line Circuit Cordless Switchboard.  MOD A  PABX to Magneto Main Exchange.
13220 PABX. Exchange Line Circuit Cordless Switchboard.  MOD B  PABX to Magneto Drop.
13220 PABX. Exchange Line Circuit Cordless Switchboard.  MOD C  PABX to LM Eric Main Exchange.
13220 GBW GBU PABX. Exchange Line Circuit Cordless Switchboard.  MOD D  PABX with ‘Out’ Service on Two Routes.
13230 GBW GBU RCCL NOTES 20, 35 & 49 Line PABX. Marker Circuit.
13240 GBW RCCL Attendant’s Circuit 20, 35 & 49 Line PABX's.
13241 GBW RCCL NOTES Attendant’s Circuit 20, 35 & 49 Line PABX's.
13242 GBW RCCL Attendant’s Circuit 20, 35 & 49 Line PABX's.
13250 GBW GBU RCCL 20, 35 & 49 Line PABX's Ringing and Tones Circuit (See GBW 14700).
13260 GBW GBU RCCL 20, 35 & 49 Line PABX's Pulse Circuit (See GBW 14710).
13260 GBW 20, 35 & 49 Line PABX's Pulse Circuit (See GBW 14710).  MOD A  PABX 20 Line Pulse Circuit.
13270 GBW RCCL Attendant’s Line, Night Service, Start Alarms & Misc Circuit 20, 35 & 49 Line PABX's (See GBW 14720).
13270 GBW Attendant’s Line, Night Service, Start Alarms & Misc Circuit 20, 35 & 49 Line PABX's (See GBW 14720).  MOD A  PABX with ‘Out’ Service on Two Routes.
13280 GBW Rack Common Services 20 Line PABX.
13280 GBW Rack Common Services 20 Line PABX.  MOD A  PABX 20 Rack Common Services with Auxiliary Services.
13290 GBW Routine Test Set 20 & 35/49 Line PABX.
13300 GBW Rack Common Services 35/49 Line PABX.
13300 GBW Rack Common Services 35/49 Line PABX.  MOD A  PABX 35 Rack Common Services with Auxiliary Services.
14070 GBW Trunking Scheme 50/1200 Line PABX.
14080 GBW GBX RCCL Extension Line Circuit 50/1200 Line PABX.
14090 GBW GBU GBX RCCL First Group Selector 50/1200 Line PABX.
14091 GBW GBU GBX RCCL First Group Selector 50/1200 Line PABX.
14100 GBU GBX RCCL Second Group or I/C Selector 50/1200 Line PABX.
14110 GBU GBX RCCL Final Selector Regular 50/1200 Line PABX.
14120 GBW GBU GBX RCCL Final Selector Group Hunting 50/1200 Line PABX.
14120 RCCL Final Selector Group Hunting 50/1200 Line PABX.  MOD A  To Satellite PABX.
14120 RCCL Final Selector Group Hunting 50/1200 Line PABX.  MOD B  At Satellite PABX.
14130 GBW GBU RCCL NOTES Ringing and Tones Circuit 50/1200 Line PABX  (See GBW 14700).
14140 GBW GBU RCCL NOTES Pulse Circuit 50/1200 Line PABX.
14141 GBW GBU RCCL Pulse Circuit 50/1200 Line PABX.
14150 GBU GBX RCCL Exchange Line Circuit 50/1200 Line PABX (See GBW 15220).
14150 Exchange Line Circuit 50/1200 Line PABX (See GBW 15220).  MOD A  PABX to Magneto Main Exchange
14160 GBW RCCL NOTES Enquiry Circuit 50/1200 Line PABX.
14170 GBU GBX RCCL Inter Switchboard Line B/W Auto-to-Auto Dialling 50/1200 Line PABX.
14170 RCCL Inter Switchboard Line B/W Auto-to-Auto Dialling 50/1200 Line PABX.  MOD A  to Satellite PABX
14170 RCCL Inter Switchboard Line B/W Auto-to-Auto Dialling 50/1200 Line PABX.  MOD B  at Satellite PABX
14170 RCCL Inter Switchboard Line B/W Auto-to-Auto Dialling 50/1200 Line PABX.  MOD C  to Satellite PABX
14170 RCCL Inter Switchboard Line B/W Auto-to-Auto Dialling 50/1200 Line PABX.  MOD D  at Satellite PABX
14170 GBU RCCL Inter Switchboard Line B/W Auto-to-Auto Dialling 50/1200 Line PABX.  MOD E  at Satellite PABX
14170 GBU RCCL Inter Switchboard Line B/W Auto-to-Auto Dialling 50/1200 Line PABX.  MOD F  at Satellite PABX
14170 GBW GBU RCCL Inter Switchboard Line B/W Auto-to-Auto Dialling 50/1200 Line PABX.  MOD G  for 4-Wire Tie Lines.
14180 GBW GBU GBX RCCL Inter Switchboard Line B/W to PMBX one wire Earth Dialling or DC Signalling in DC Signalling out 50/1200 Line PABX.
14190 GBW GBU GBX RCCL NOTES Inter Switchboard Private Wire Circuit Centre & Balanced Battery Signalling 50/1200 Line PABX.
14200 GBW RCCL Manual Board Circuits 50/1200 Line PABX (See GBW 15200).
14210 GBW GBU RCCL Cord Circuits 50/1200 Line PABX (See GBW 15210).
14220 GBW CTS Alarm Panel 50/1200 Line PABX.
14221 GBW RCCL CTS Alarm Panel 50/1200 Line PABX.
14230 GBW GBU RCCL NOTES Manual Ring and Alarm Circuits 50/1200 Line PABX (See GBW 16630).
14240 GBW RCCL Rack Common Service Wiring Auto Rack 50/1200 Line PABX.
14250 GBW GBU GBX RCCL Manual Extension 50/1200 Line PABX.
14260 GBU GBX RCCL Manual Private Wire Circuit 50/1200 Line PABX.
14270 GBW GBU GBX RCCL NOTES ‘0’ Level Circuit 50/1200 Line PABX.
14280 GBW GBU GBX RCCL Lamp Lighting Circuit 50/1200 Line PABX.
14290 GBW Night Service Switchboard Circuit 50/1200 Line PABX.
14291 GBW Night Service Switchboard Circuit 50/1200 Line PABX.
14300 GBW GBU GBX RCCL Night Service Access Circuit 50/1200 Line PABX.
14300 RCCL Night Service Access Circuit 50/1200 Line PABX.  MOD A  Cover Equipment to Issue 3
14310 GBW RCCL Routine Test Set for 50/1200 Line PABX.
14380 GBW RCCL Rack Common Service Wiring Relay Set Racks 50/1200 Line PABX.
14390 GBW RCCL Rack Common Service Wiring 2nd Group Selector Rack 50/1200 Line PABX.
14440 GBW GBU RCCL Warn Pulse Generator 50/1200 Line PABX.
14540 GBW GBU RCCL Conference Circuit with Priority.
14550 GBW GBU RCCL Code Call Circuit (25 Visual and/or Audible Codes) 50/1200 Line PABX.
14550 GBW GBU RCCL Code Call Circuit (25 Visual and/or Audible Codes) 50/1200 Line PABX.  MOD A  PABX to 120, 135, 149 & 300 Type PABX.
14550 GBU RCCL Code Call Circuit (25 Visual and/or Audible Codes) 50/1200 Line PABX.  MOD B  PABX to LM Eric. No. 9A and ATE No. 16.
14560 GBW GBU RCCL Night Watchman’s Circuit 20 Locations 50/1200 Line PABX.
14650 GBW GBU RCCL NOTES 20 line PABX Connecting Circuit.
14650 20 line PABX Connecting Circuit.  MOD A  PABX Having ‘Out’ service on Two routes.
14650 GBW RCCL 20 line PABX Connecting Circuit.  MOD B  
14660 GBW GBU RCCL NOTES 35/49 Line PABX Connecting Circuit.
14660 GBW 35/49 Line PABX Connecting Circuit.  MOD A  PABX Having ‘Out’ service on Two routes.
14660 GBW RCCL 35/49 Line PABX Connecting Circuit.  MOD B  PABX Having ‘Out’ service on Two routes.
14670 GBW GBU RCCL NOTES 20 Line PABX Enquiry Circuit.
14680 GBW GBU RCCL NOTES 35/49 Line PABX Enquiry Circuit.
14690 GBW GBU RCCL NOTES 20, 35 & 49 Line PABX Exchange Line Circuit
14690 GBW 20, 35 & 49 Line PABX Exchange Line Circuit  MOD A  PABX for Magneto Main Exchange.
14690 20, 35 & 49 Line PABX Exchange Line Circuit  MOD B  PABX for Magneto WE Main Exchange.
14690 20, 35 & 49 Line PABX Exchange Line Circuit  MOD C  PABX for LM Eric Main Exchange.
14690 GBW GBU 20, 35 & 49 Line PABX Exchange Line Circuit  MOD D  PABX Having ‘Out’ service on Three routes.
14690 GBW 20, 35 & 49 Line PABX Exchange Line Circuit  MOD E
14690 GBW 20, 35 & 49 Line PABX Exchange Line Circuit  MOD F
14700 GBW GBU RCCL NOTES 20, 35 & 49 Line PABX Ringing and Tones Circuit (See GBW 16760).
14710 GBW GBU NOTES 20, 35 & 49 Line PABX Pulse Circuit.
14710 GBW GBU 20, 35 & 49 Line PABX Pulse Circuit.  MOD A  PABX 20 Line Pulse Circuit.
14711 GBW GBU RCCL 20, 35 & 49 Line PABX Pulse Circuit.
14711 GBU 20, 35 & 49 Line PABX Pulse Circuit.  MOD A  PABX 20 Line Pulse Circuit.
14720 GBW RCCL NOTES 20, 35 & 49 Line PABX Attendant Line, Night Service Start Alarms & Miscellaneous Circuit.
14720 GBW RCCL 20, 35 & 49 Line PABX Attendant Line, Night Service Start Alarms & Miscellaneous Circuit.  MOD A  PABX Having ‘Out’ service on Three routes.
14721 GBW RCCL 20, 35 & 49 Line PABX Attendant Line, Night Service Start Alarms & Miscellaneous Circuit.
14721 GBW RCCL 20, 35 & 49 Line PABX Attendant Line, Night Service Start Alarms & Miscellaneous Circuit.  MOD A  PABX Having ‘Out’ service on Three routes.
15200 RCCL Manual Board Circuits 50/1200 Line PABX.
15200 GBW Manual Board Circuits 50/1200 Line PABX.  MOD A  With Splitting of Cord Circuit.
15200 GBW Manual Board Circuits 50/1200 Line PABX.  MOD B  
15201 GBW RCCL Manual Board Circuits 50/1200 Line PABX.
15210 GBW GBU RCCL Cord Circuits 50/1200 Line PABX.
15211 GBW GBU RCCL Cord Circuits 50/1200 Line PABX.
15220 GBW GBU RCCL Exchange Line Relay Set 50/1200 Line PABX.
15220 GBU Exchange Line Relay Set 50/1200 Line PABX.  MOD A  PABX Magneto Main Exchange.
15220 Exchange Line Relay Set 50/1200 Line PABX.  MOD B  PABX Drop Shutter Magneto Main Exchange.
15230 GBW GBU GBX RCCL Selector Level Relay Set (See GBW 15450).
15470 GBW 6.5 Amp Battery Eliminator for 120 and 135 Type PABX’s.  See IS 1080 Part 1.
15480 GBW 7.5 Amp Battery Eliminator for 120-A and 135-A Type PABX’s.  See IS 1080 Part 1.
15490 GBW 7.5 Amp Battery Eliminator for 120-A and 135-A Type PABX’s.  See IS 1080 Part 1.
16630 GBW GBU RCCL Manual Ring and Alarm Circuit 50/1200 Line PABX.
16740 GBW RCCL 25 C/S Ringing Generator 20, 35 & 49 Line PABX’s.
16750 GBW PABX 400 C/S Tone Oscillator.
16751 GBW RCCL PABX 400 C/S Tone Oscillator.
16760 GBW GBU RCCL PABX Ringing and Tones Circuit 20, 35 & 49 Line PABX’s.
16761 GBW GBU RCCL PABX Ringing and Tones Circuit 20, 35 & 49 Line PABX’s.
16850 GBW GBU RCCL PABX Finder Circuit.
16850 GBW GBU PABX Finder Circuit.  MOD A  DV
16860 GBW GBU RCCL Code Call Circuit 50/1200 Line PABX.
16990 GBW GBU RCCL Exchange Line Circuit 50/1200 Line PABX.
16990 GBW Exchange Line Circuit 50/1200 Line PABX.  MOD A  to Magneto Main Exchange.
20140 GBW GBU RCCL Manual Ring & Alarm Circuits 50/1200 Line PABX.
20210 GBW GBU RCCL Night Service Access Circuit 50/1200 Line PABX.