Schematic · 1968
SD-65741-01: 756A PBX Line, Line Link and Marker Circuit (issue 38D, 1968)
Schematic drawings of the 756A's crossbar line link frame and marker (104 pp.).
Schematic · 1968
Schematic drawings of the 756A's crossbar line link frame and marker (104 pp.).
31 IO· lt>LS9-0S SHEET SHEET NO. ~ SHEET INDEX SUPPORT! NG INFORMATION A1 18 SHEET INDEX A2 SHEET INDEX (CONT) A3 APPARATUS INDEX A4 APPARATUS INDEX (CONT) LEAD INDEX AS CONTENTS ) CONT LEAD INDEX (CONT) 19 20 21 22 23 ·24 25 Z& 27 28 29 30 31 32 33 34 35 3b INDEX (INITIATED ON ISSUE ISSUE NO. 37 38 39 40 41 42 43 44 45 SUPPORTING INFORMATION 18) 4b 47 48 t,9 50 51 52 53 54 55 Sb 57 SB 59 &O bl &2 bj &4 &5 bb 1>7 SHEET NO. 19 20 21 22 2J 24 2[ 26 27 28 29 30 31 32 33 34 35 36 37 38 A1 18 B ?r 21 22 23 24 ;.;; 26 27 28 29 30 31 32 33 34 35 36 37 38 A2 7 1 q 20 21 22 23 24 ~" 26 27 28 29 30 31 32 33 34 35 36 37 38 Al 1 2 I 2 12 12 23 24 24- Z.4 2.7 27 27 30 30 32 33 33 35 35 37 37 A4 7 19 20 20 20 2J 24 2.4 26 27 28 29 30 31 AS 17 19 20 21 22 23 24 32 33 33 35 35 37 38 CATEGORY NO. PBX CABLING DIAGRAM 756A FEATURE CABLE SO-b5746-01 SD-61>920-01 EQUIPMENT INFORMATION J-58829H-( ) VOLTAGE REDUCTION DETECTOR J -58823AD( ) J·58829ASt ) IBA ED-5E009-( ) SD-5E037-01 198 25 ?~ 27 27 'Z7 '30 30 32 33 33 35 35 35 35 ,__o_P_T_ID_N_IN_D_E_X~----------+---A_7 -1---1--.1--.J--1--+.2_3_._24_.l-2_5+26 27 27 29 30 31 32 33 33 35 36 37 38 A7 81 HI FS 1 STATION LINE 81 8 18 1 a 21 21 21 24 25 25 21 27 27 30 31 32 33 33 35 35 37 37 PART OF FS 2 TENS SELECT I ON 82 1b lb le 16 16 23 23 23 26 26 26 2626 26 26 26 26 26 26 26 26 82 PART OF FS 2 TENS SELECTION FS 3 TENS PREFERENCE CHAIN . 83 PART OF FS 4 TENS CONNECTOR 84 PART OF FS 4 TENS CONNECTOR 85 a PART OFFS 5 UNITS SELECTION 8b 1b lb 20 21 21 23 ;>.:, l5 <.5 25 25 25 25 25 32 32 32 32 36 36 36 86 PART 01' FS 5 UN I TS SELECT! ON 87 lb lb 20 21 21 23 23 l5 <.:1 25 25 25 30 30 32 32 32 32 32 32 32 87 ~ARl 1 Q 1 q 1 9 ~9 19 19 19 19 19 19 3 19 19 19 19 19 19 19 19 37 37 83 3 3 23 23 2.3 °'3 2'3 23 23 23 23 23 23 23 23 23 37 37 84 a 20 20 20 <3 <:.s 2.3 l.i 23 23 23 30 30 30 30 30 30 30 30 30 85 3 OF FS 5 UNITS SELECTION 88 7 7 20 20 2 - 23 25 2;; 25 25 25 25 25 32 32 32 32 32 37 37 88 PART OF FS b LINE AND TRUNK HUNTING 89 1b lb 16 1b 16 2J :,5 26 26 26 26 26 31 32 33 33 35 36 36 36 89 PART OF FS b LINE AND TRUNK HUNTING 810 lb 19 19 19 1'3 19 24 2.4 <.4 24 24 24 24 24 32 33 33 33 33 33 33 810 PART OF FS b LINE AND TRUNK HUNTING Bl I 11 11 II 11 11 23 24 2+ ;.4 24 24 24 24 24 32 33 33 33 33 33 33 811 PART OF FS b LINE AND TRUNK HUNTING 812 lb 16 lb 1b16 1b 16 z;; ~!" 2s25 2929 29 29 333333 3636 36 012 FS 7 JUNCTOR REGISTER RELAYS FS 8 SEQUENCE CONTROL . 813 , , 814 3 3 ' 3 3 3 3 3 3 J 3 3 3 3 3 3 3 3 3 an 3 3 3 ?> 3 3 3 3 3 3 3 3 3 3 3 3 814 6 € 6 6 6 6 9 ROUTE CONTROL 815 b 6 b 6 " 6 6 33 33 33 36 36 36 815 PART OF FS 9 ROUTE CONTROL 81b 8 a a s a 23 24 24 24 24 24 29 30 31 31 33 33 35 35 37 37 81b FS 10 REG I STER COtffROL 817 b 16 16 16 16 11> 24 Z4 2" 24 24 24 24 31 31 31 31 35 35 35 35 817 PART OF FS 11 CLASS OF SERVICE 818 PART OF FS 11 CLASS OF SERVICE 819 9 9 9 9 23 23 23 23 23 23 29 30 31 31 33 33 33-+-33-+3_7+-38-+-+--ll-+-+--+-+-l-+-+---l----J.-l--l---l---l---1-1--1----1----J.-1-+-+---1--+-1-+-+---l-__:8:..:l..::8_-1 9 16 Ii> 16 16 22 23 24 2!5 25 25 25 29 29 31 31 33 33 35 35 35 38 819 3 3 6 SHEET INDEX NOTES 1. WHEN CHANGES ARE MADE IN THIS DRAWING, ONLY THOSE SHEETS AFFECTED WILL SE REISSUED. 2. THIS SHEET INDEX WILL SE REISSUED AND BROUGHT UP TO DATE EACH TIME ANY SHEET OF THE DRAWING IS REISSUED, OR A NEW SHEET IS ADDED. 3. THE ISSUE NUMBER ASSIGNED TO A CHANGED OR NEW SHEET WILL BE THE SAME ISSUE NUMBER AS THAT OF THE SHEET INDEX. PART OF FS 1 2 LINK TEST 820 24 2.4- 24 24 24 24 a4 24 32 33 33 33 33 33 33 820 PART OF FS 12 LINK TEST 821 12 12 1;: 12 12 12 24 2.+ 24 24 24 29 29 29 32 33 33 33 33 33 33 821 PART OF F 12 LINK TEST 022 1212 12 12 12 23 23 2.3 25 23 23 23 30 30 30 33 33 33 33 33 33 822 PART OFFS 12 LINK TEST 13 SELECT MAGNET CONTROL 823 1 2 12 I 2 1 2 ! 2 23 23 <=:3 • 'l 23 23 23 30 30 30 33 33 33 33 33 38 823 PART OF FS 13 SELECT MAGNET CONTROL 824 16 le 10 lb 22 23 23 23 ·<..3 23 23 23 30 30 30 33 33 33 33 33 33 FS 14 ADV~NCE, TIMEOUT AND RELEASE 825 11 19 l'i 19 19 19 19 19 19 19 19 19 30 30 30 30 30 30 30 30 30 825 FS 15 DOWll CHECK FS 16 TIM -OUT CHECK 826 12 12 12 12 12 12 n 24- 2"' 24 24 24 24 31 31 33 33 35 36 36 36 826 PART OF F$ 17 LINKS 827 11 11 11 11 11 w 23 23 23 23 23 23 23 23 23 23 23 23 827 7D 378 APP 48 PART OF Ft 17 LINKS 028 lb lb 16 16 16 1& 16 16 15 16 16 16 16 16 928 380 APP 2J L.3 2.3 4. SHEETS THAT ARE NOT CHANGED WILL RETAIN THEIR EXISTING ISSUE NUMBER. 5. THE LAST ISSUE NUMBER OF THE SHEET INDEX IS RECOGNIZED AS THE LATEST ISSUE NUMBER OF THE DRAWING AS A WHOLE. 7D 368 APP 38 70 16 16 16 16 16 16 16 ::+:=+=-l~+--+---l--l--,l-+--+---l--1-1--+--+--+--ll-l--+--+-+--11-+--l---l----J.-l-+--l--·--l--l-l-+-_:.~--1 5D 029 4 ~ 4 4 4 4 4 .i 4 4 4 4 4 4 4 33 33 33 33 33 33 830 4 t t 4 4 4 ~ 4 ~ 4 4 4 4 4 4 33 33 33 33 33 33 B~O ALARM 831 15 15 15 IS 15 15 !- 1b 15 27 'Z7 ZT 27 ?7 27 27 27 27 27 37 37 831 FS 21 LIN TEST ALARM 032 12 12 12 ~2 12 12 1? 12 It' 12 12 12 12 12 12 33 33 35 35 37 37 832 FS 22 TIM FS 23 ~LA OUT ALARM AND ALARM cotlTROL LAMPS en 12 12 12 12 12 12 12 12 ,, ... 12 12 12 12 12 12 33 33 33 33 33 38 en FS 24 TRA IC REG I STER CONTROL FS 25 TRU . AND HOLD MAGNETS 034 lb lo 16 21 21 23 23 ;:3 2" 23 28 28 28 2C 32 33 33 33 33 37 37 FS 2b LIN OR 035 17 19 19 21 2J 24 25 Z"I 27 27 27 30 30 32 33 33 35 35 37 37 835 636 30 31 836 PBX SYSTEMS 837 30 30 30 30 34 34 34 3 837 ~O. 756A LINf, LINK,ANO MARK[R CIRCUIT CIRCUIT FOR STATION LINES UNKS FS 27 PAD ONTROL CIRCUIT FOR CON OLLING THE SWITCH PAD OF COD 8 TIE TRUNKS FS28 LINK EST 21 1 31 31 31 31 31 31 31 34 829 838 33 33 33 33 33 38 8 839 33 33 33 33 33 38 839 840 33 33 33 33 33 33 840 SD-65741-01 IJ07 AT&TCO STANDARD @ SD-65741-0l-A1 1--~~~~~~~~<L_L_a~M-KR~l~~-.-......""-! BELL TELEPHONE LABORATORIES TCI Library www.telephonecollectors.info INCORPORATED 65 106SHEETS -.-- 31 DRAWING ISSUE ~ 12B1:!il> Rl!oa ,_~ ~iAl.6 SHEET INDEX (CONT) 1 2 APP FIG. 1 SHEET NO. Cl APP FIG. 2,3 CONTENTS 6 9 10 ;: s 5 ISSUt: NC. 11 12 13 14 1S 1b 17 18 19 20 21 !2 2J 24 25 2o 27 28 29 JO 31 J2 1J 34 JS Jo 37 38 39 40 41 42 43 44 4S 4b 47 48 49 50 1I 12 12 12 12 16 17 17 17 20 20 20 23 23 25 25 25 25 29 30 30 32 33 33 33 33 37 37 s s s s s s s 1213 13 13 16 16 16 1b lb 3 s s o s 2 J J 1 1 J J C2 I 4 7 5 lb22 2222 25 252727 2727 27 323232 32 32 3737. 148~· 'T.1.4. SHEET NO. C1 ,_ILCI C2 -~ l!!A w~ P.t ~~ I 2 J 4 4 4 4 8 8 8 8 12 12 12 12 12 12 12 19 19 1919 19 19 19 19 19 19 19 30 30 30 30 30 30 30 37 37 APP FIG. S APP FIG. b PART OF APP FIG. 7 C4 1 2 2 2 2 2 2 2 9 9 9 1212 12 12 161616 19 19 1919 191919 19 19 19 19 30 303033 3333 33 3737 C4 cs I 2 2 4 s s s s 9 9 9 1212 12 12 1212.12 12 20 202023232.3 2323 23 29 30 30 3033 3333 36 3636 cs PART OF APP FIG. 7 Co I 2 2 4 4 4 4 8 8 8 8 12 12 12 12 12 12 12 19 19 ·1919 19 24 24 24 24 28 28 28 28 28 33 33 33 36 36 36 Cb APP FIG. 8 C7 4 4 0 0 b b 8 1212 12 12 16 1616 1b lb 31333435 3636 38 C7 J 4 4 b ca 2 2 J APP FIG. 9 (MFR DISC) 1 I 4 4 8 6 8 8 1212 12 24 2.4 24 24 28 29 30 30 30 33 33 33 36 37 37 ca ,_'EG APP FIG. 10 C9 .1 2 J J 5 s s e a a 11 1, 11 11 11 11 11 C9 12 12 16 16 18 1a 1e z1 21 21 21 21 ~OAC!itt/I fP HO APP FIG. 4 178.,,,K ;t"' ,_~ 18A l/S. 12 12 12 12 12 12 12 11 11 11 11 11 11 11 11 11 11 11 11 30 30 30 33 33 33 33 33 33 21 21 21 21 21 21 21 33 33 33 33 37 37 C10 11 24 2.4 24 24 24 24 24 24 24 33 33 35 35 35 35 Cll Cl2 30 30 30 30 30 30 30 30 30 Cl2 Cl3 33 33 33 36 36 38 • C10 1 2 J J J J J J J J APP FIG. IS, lb, 17. Cl 1 I 2 2 2 2 2 2 2 2 2 11 APP FIG. 19,20,21 APP FIG. 22 APP FIG. 11,12,1J,14 1212 1b22 2323 25 26 2628 29 30 31 J 12 12 11 , 1 11 11 11 f1 11 11 1I 11 11 P.O . EG 198 ....... fP >---f:O 21B'lml ,_&R/ 22ACI~ PD II 0 1£1 230 IHIC HO ~;;,. CKT NOTES "ORKING LIMITS DI ~ 1 2 J J S 5 S 8 9 9 11 1213 13 13 16 17 17 19 20 2·12223 24 25 26 27 27 29 30 31 1--"--------------+--~D~l~B-+--+--1--<~t--+--+--+-+--+-.._-+--+--+--+--1-t--+-+--+--+---+t--IN_F_o_N_o_T_E~S_J_o_1-_J_o_2_ _ _ _ _ _ _-+__0_2_-+-1-+-2-+-3-+-J-+J--l~b-+-b-+-b-+-9-+-9-+1-1-+-1-2~1-2~12-+-tt~1~~.~ 1b I ·t 1 1 1 1 1 I NFO NOTES JOb- JOC INFO NOTE:. JlO 10 END AND EQUIP. NOTE 201 D4 D5 1 1 I 1 1 1 1 ..:..1+'-~+..:..1-t--1'-t:;-il;t.-:;1+.1'=..f:c::I+.,1;:;+,-,.1+-:1::+-:..:..1t:-"1+1::-:+.::..,I4:,1:--b:::I+:-:I~td-i-:1:+.;1.,,.+:1;,,+::..,I~;,.It i,+.;l.,.+,;.,.I+,:.:l,.+,;.,.It i±l:-l--i-l---1-..+--+--i-l-.+--+---l--lf-l-_;D;.;'4;..._--1 12 12 12 12 16 16 16 1b lb 21 21 23 23 25 25 25 25 29 30 31 31 31 31 31 31 37 37 U~ 1 1 1 1 1 1 1 1 1 I I I I DJ 1 1 I I I 1 1 1 ~ 1 1 1 ~ 16 ~ ~ DJ 1 I 16 ~ ~ ~ INFO NOTE:; JOJ-JOS 1 I 16IB lb IB 16 ~ 16 IB IB IB 36 37 38 ~IA 32 33 33 35 ---+--+---<'-+-_-+-_.____..._.,__.....__.___._.__.DI 36 37 37 018 I I I 24DiSAK HW ~~ 250 Al -~ .~~~ ""--;; 210 At .___llfl- iijS 280~ ltt.rt. ~ 298~ 5C 1 ~ ST~TION DIAL TONE CONNECTION E1 1 2 2 2 2 2 7 7 7 7 7 12 12 12 t2 16 16 16 lb lb lb 16 11> 16 16 16 16 16 16 30 30 3233 33 33 33 37 37 E2 1 2 2 2 2 2 7 7 7 12 12 12 12 16 16 16 1o 16 16 16 16 16 16 16 16 16 16 t6 16 32 33 33 33 33 37 37 PART OF SC J - STATION OR CODE 8 TIE TRUNK TO STATION CONNECTION EJ 1 2 3 4 4 4 7 7 7 1 1 121; 12 12 16 1616 lb lo ·1i 16 1& 16 16 16 16 1616 30 303233 3333 33 3131 PART OF SC J - STATION OR CODE 8 TIE TRUNK TO STATION CONNECTION E4 1 ' 2 2 2 2 7 7 7 1 1 , 2 12 12 12 12 12 12 , 9 19 19 19 19 19 19 19 19 19 19 30 SC 4 - STATION TO CENIRAL OFFICE TRUNK CONNECTION E5 1 2 2 2 2 2 7 7 7 7 l 21 21 21 21 21 SC S - CENTRAL OFFICE OR RINGDOWN TIE TRUNK TO Sl ~11 ON CJtiNECT I OtJ Eb 1 2 2 2 2 2 7 7 7 7 SC o - CENTRAL OFFICE OR RINGDOWN TIE TRUNK TO COCE 8 TRUNK •CONNECTION E7 1 2 2 2 2 2 2 2 2 PART C:F SC 7 - STATION TO STATION CALL TO BUSY STAT I ON - BUSY TONE TRUNK IDLE - ALL STATIO!IS IN HUNTING GRO~~ ALSO BUSY ES 1 1 1 1 1 1 7 7 7 PART OF 3C 7 - STAllCN TO STATION CALL TG BUSY STATION -BUSY TONE TRUNK IPLE - ALL STATIONS IN HUNTING GROUP ALSO BUSY SC 8 - STATION TO STATION CALL TO BUSY STATION - STATION IN HUNTiNG GROUP IDLE E9 1 £10 1 2 2 2 l CENTRAL OFFICE OR RINGDOWN TIE TRUNK CALL TO 3USY STATION - ALL OTHER STATIONS IN HUNTING GRaUP ALSO BUSYNO OTh':P. TRUNK CA:·1Pf ~ ON :A DVll 300 PJS SC 2 - CENTRAL OFFICE TRUNK OR RINuDOWN Tl E T~UNK DI AL TONE CONNECTION PART OF SC q El 7 7 E2 ,_~ 310 RJS 'It!~ .StlK ao 32 33 33 33 33 33 33 E4 21 21 21 21 33 33 33 33 33 33 Es -I 7 12 12 t2 12 16 16 16 lb lb 21 21 23 23 23 23 23 23 23 23 23 23 33 33 33 33 37 37 Eb "-!ff 2 2 12 12 12 12 16 16 16 lb lb 16 16 23 23 2.3 23 23 23 23 30 30 32 32 32 32 32 32 32 E7 7 7 12 12 12 12 12 12 12 19 19 19 19 23 23 23 23 27 27 29 29 29 32 33 33 33 36 37 37 EB 12 , 2 12 12 12 12 12 12 12 21 21 21 ,_~ 330 fJS 340 ft/5 350 fJS .____~ 36BIPJS .____~ 379IPJS --~ 380 IRIS --~ 2 J J J 7 7 7 12 12 12 12 16 16 16 1b 16 1616 23 23 23 23 23 23 29 29 29 32. 33 33 33 36 36 36 E9 2 7 7 7 7 12 , 2 12 12 12 12 12 , 9 , 9 ,, 21 23 23 2.3 2.6 26 26 29 29 29 29 33 33 33 33 37 37 t1C ) 7 7 138·- I 2I I> \) TCI Library www.telephonecollectors.info f-1,W. DRAWING ISSUE /fl ' CONTENTS PART OF SC 9 - CENTRAL OFFICE OR RINGDOWN TIE TRUNK CALL TD BUSY STATION - ALL OTHER STATIONS IN HUNTING GROUP ALSO BUSY - NO OTHER TRUNK CAMPED ON SC 10 - LINK SHIFT TIMING Oi ~ -128 -130 ~ "" 146 SHEET INDEX (CONT) SHEET · NO. E11 PART Of SC 14 - INTERCEFTED CALL CALLEO LINE UNASSIGNED E14 SC 19 - CALLED LINE UNAS'SIGNED - ALL A;TENDANT TRUNKS BUSY SC 20 - CENTRAL Off I CE OR RI NGOOWN TIE TRUNK CALL TO BUSY STATION ALL OTHER STATIONS IN HU~TING GROUP ALSO BUSY - ANOTHER TRUNK IS CAMPEO ON 5 b 7 8 9 10 ISSUE. NO. 1b 17 18 'i9 20 21 22 23 24 25 2b 27 28 29 30 31 32 33 34 35 Jb 37 38 39 40 11 12 13 14 h; 41 42 43 44 45 4b 47 48 49 >O SHEET NO. ~ li5A 1 2 2 2 2 2 2 2 2 2 2 12 12 12 12 12 12 12 19 19 21 21 21 21 2.1 26 26 26 2.6 2.6 26 32 33 33 33 33 33 33 1 1 1 2 1 2 1 2 1 2 1 2 1 1 7 7 1 7 1 7 1 12 12 12 12 12 12 12 12 12 12 12 23 23 23 23 23 23 29 29 29 32 33 33 33 36 36 36 7 12 12 12 12 12 12 , 2 19 19 19 19 19 19 19 19 19 19 29 29 29 32 33 33 33 36 37 37 E13 12 12 12 12 12 12 12 12 12 12 12 12 12 12. 12 12 12 12. 12 12 32 33 33 33 36 36 36 E14 12 12 12 12 12 12 12 12 12 E15 I 0 I )> UI 12 12 23 23 Z3 23 23 23 29 29 29 29 33 33 33 33 33 38 - ! El 5 240 250 12 12 E1b 12 12 E17 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 ~2 12 12. 12 12 12. 12 12 12 12 12 12 12 12. 37 37 12 12 23 23 23 23 23 23 29 29 29 32 ~2 32 32 36 36 36 2 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 33 33 33 33 33 33 ; E17 - E18 :; OAW - ~ 298 12 12 12 12 12 12 12 12 12 E19 12 12 12 12 12. 12 12 12 12 12 12 32 33 33 33 33 33 33 ---- E E19 300 llFt HI IO SC 2b - CANCEL CAMP ON 12 12 12 12 12 12 12 12 12 12 12 12 12. 12 12 12 12 12 12 12 12 12 L2 12 310 ~ ,...._ ~ E21 23 23 2.3 23 23 2! 23 23 23 23 23 23 23 36 36 36 E21 SC 27 - CENTRAL OFFICE OR RINGDDWN TIE TRUNK CALL TD BUSY STATION - MESSAGE REGISTRATION ON SLEEVE E22 24 2.4 24 24 24 24 24 24 24 33 33 35 35 35 35 E22 SC 28 - CENTRAL OFFICE TD INWARD RESTRICTED STATION E23 25 25 25 25 29 29 29 29 29 29 29 29 37 37 E23 SC 2.9- STATION TO CODE 8 TIE TRUNK CONNECTION E24 30 30 32 33 33 33 33 33 33 E24 SC30- CODE B TIE TRUNK DIAL TONE CONNECTION E25 30 30 32 33 33 33 33 37 37 E25 SC31- CODE B TIE TRUNK TO CODE B TIE TRUNK CONNECTION E26 30 30 32 32 32 32 32 32 32 E26 - ~ E27 30 30 30 33 33 33 33 33 33 E27 -~ fllj E28 33 33 35 35 37 37 E2B E29 33 33 33 33 33 33 E29 Fl I 2 2. 2 2 2 2 2 2. 2. 2 2 2 2. 2 16 16 16 16 16 CKT EQ TABLES, TO COSB F2 I 2 2 2 2. 2 2. 2 2 2 II II II II II II CKT IEQ TABLES, COTA TO LALi F3 I 2 2 2 5 5 5 5 9 9 II 12 12 14 14 16 CKT F4 I 2 2 4 4 4 4 4 4 10 10 12 12. 12 12 CKT EQ TABLES, L TS2 TO RCAI F5 I 2 2 2. 2 2 2 2 2. 2 II 12 12 12 12 12 12 12. 12 12 CKT EQ TABLES, RCBO TO RLBA F6 I 2 2 2 2 2 2 2 9 9 9 9 9 CKT I Q TABLES, RLBB TO SMRBA F7 I 2 2 2 5 5 5 5 9 9 II 11 II II II II 11 CKT EQ TABLES, SMTA TO TEAB FB I 2. 2 2 2 2 2 2 2 2 2. 2 2 14 14 14 14 14 14 14 14 14 1,4 14 14 14 14 14 14 14 14 14 33 33 33 36 36 36 FB CKT EQ TABLES, TEBO TO TRCI F9 I 2 2 2 2 2 2. 2 2 2. II II II II II II II II II 20 20 20 2:> 20 20 20 20 20 20 20 20 20 20 2.0 20 2.0 2020 F9 CKT EQ TABLES, TRCA TO ULA FlO I 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Fii 2 2 2 2 2 B 9 9 ~ 9 9 9 9 9 2 9 33 33 33 33 33 33 9 33 33 33 33 33 33 FIO CKT 2 1 2 330 p~ 340 .350 PJs ""1 -~ 368 RJS 37B fJS 380 PJ5 II II II II 16 16 16 16 16 16 16 16 16 10 16 16 16 16 16 11 16 16 16 Fl II 23 24 24 2.4 2.7 27 27 30 30 30 33 33 35 36 36 36 F2 16 16 16 16 16 16 16 24 24 24 24 2.4 2.4 24 24 24 2.4 24 35 36 36 36 F3 12 12 12. 12. 12 12. 12 12 12 12 12 33 33 33 33 33 33 F4 12. 12 12. 12 12 27 27 27 30 30 30 33 33 33 33 33 33 F5 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 30 30 30 30 30 30 30 30 30 F6 II 12 12 12 12 12 12 II II 2 9 II II 2 9 II 12 II II ll II II II II II 2 2 2 2 2. 2 2 2 2 2 2 2 9 9 9 9 9 9 9 9 9 9 9 9 II II II II II II II 2 138 F7 Fii LINE, LINK, AND MARKER CIRCU~ SD-65741-0l-A3 BELL TELEPHONE LABORATORIES INCORPORATED ····- - ---- -m -I iie2D A~ _La.! CKT ~EQ TABLES, MAGNETS .. • .. ~c ~ E20 EQ TABLES, ULB TO END ~-t ~ ~\ 12 12. 12 EQ TABLES, LAL2 TO LTCB I - ~ - KFJ E1b 270 E18 . ~ 22AC I'.~ ~r~ s."•aola...I - -·· fD Hi T.5 .. - rmPD - E20 TIE TRUNK CALL TO BUSY STATION - MESSAGE REGISTRATION PULSE ON SLEEVE OF ANY LINK SC 3*- LINK SHIFT TIMING SC 3·- ALL LINKS BUSY- STATION TO . STATION CALL TERMINATING CONDITION ~ " 218 ilo'Vll _ sc~-CENTRAL OFFICE OR RINGDOWN (J) (JI ,,,,EG JR 230 llWC SC 23 - LINK SEQUENCE CONTROL SC 24 - LINK GROUP SEQUENCE CONTROL SC 25 - UN I TS SEQUENCC: CONTROL SWITCH PAD TO SWITCHBOARD ATTENDANT CONNECTION I 198 ~ SC~- CODE 8 TIE TRUNK EQUIPPED WIT.H 0 - 20AC lifll f---.-· ..,, Jp~ ~ ------- E12 SC 21 - LINK SHIFT TIMING SC 22 - ALL LINKS BuSY - STATION TO STATION CALL TEoMINATING CONDITION 'T.J!, 168 1/.1'· El 1 178 E13 CALL Tl~E OUT CHECK 4 ,___ ~ ~ SC 13 - BUSY TONE TRUNK BUSY PART OF SC 14 - INTERC£PTED.CALL CALLEO LI NE UNASSIGNED ABANDONE~ 3 ~// E12 SC 17 SC 18 - 2 - !9 SC 11 - ALL LINKS BUSY - STATION TO STATION CALL TERMINATING CONDI Tl ON SC 12 - ALL JUNCTORS BUSY - BUSY TONE TRUNK IOLE SC 15 - CENTRAL OFFICE OR RINGDOWN TIE TRUNK TO CODE 8 TRUNK CALL ALL TRUNKS BUSY SC lb - MARKER TIMING SECOND TRIAL, NO CONNECTION, AND TROUBLE RELEASE 1 -- ------ --- TCI Library www.telephonecollectors.info .. -· "-·-·-- -- + 165' PlllNTSDINU.9.A. ' - ''•· I ISSU 'Ht; ., I !!!:. 28 ~~~ tJ.S, APPARATUS INDEX DESIG A ACA ACB ;;; I LOCATICN I FS IAPP FIG.I RELAYS 36B5 8A7 fB7 ALBA ALEl3 22B2,4GAI 2202,4081 ARBA 2A8 20 7 7 9,22 9,22 EQPT EXT 6-V s,u 6-P 6-P 6_-AB frll.A EXT b-Y 6-Y 6-U 6-U 6-T 6-S 6-T 6-S - AR8B B BSYA BSYAA BSYB BSY8A STCA 8TC3 BTTA 8TT8 BTTC BYA BY8 2C8 3605 1203 1203 12E3 l?F3 15H2 15H2 16B4 16F4 1604 12C3 12.F2 4 4 20 7 7 7 7 8 8 8 8 8 7 7 CCC 1601 8 C020-29 C030-79 CDA COAA COB COBA COAL CDNA CON AA CONB CON BA 35H3 1£4 1684 16B4 16E4 16E4 3201 1684 16A4 16E4 16E4 2304 3 3 8 8 6-R 6-V 6-U 11-R SWBDOA ~CAB 6-T 6-P B B 6-S II 8 IAB 6-T 6-T 6-S 6-S 6-P 6-P b G~R COSA 2204,40F3 8 8 9 9,22 COSB COTA COTB 22E4,40H3 15F6 15G6 9,22 8 8 6-P 6-T 6-S DCKA DCKB 26A5 26C5 8 8 6-R 6-R cos OESIG LAL2 LAL2A L8A LBB LCKI LCK2 LEA LEAA LEB LEBA LSHA LSHB LT2 LT3 LT4 LT5 LT6 LT7 HCA HCB HMKA Ht.lKB HMTA Ht.lTAA HMTB HMTBA 9BI 9CI 9B4 9C4 15r;:2 15C2 15E2 1502 7 7 7 7 8 8 8 8 ICTA ICTB IN20-24 IN25-29 JRD JRI JR2 JR3 JR4 JR5 JRAL JREA JREB JTA JTAA JTB JTBA 1604 16G4 35G5 35G5 13AI 13CI 1301 13£1 13FI 13GI 29A9 13B8 13B8 14A6 14H5 1486 14H7 8 8 I I 7 7 7 7 7 7 II 7 7 7 7 7 7 6-T 6-S 2-N 2-P 6-X 6-X 6-X 6-X 6-X 6-X I-AA 6-Y L20-24 L25-29 L30-39 L40-59 L60-79 LAL I 35C6 35C6 106 106 106 32B4 I 2-N 2-P 2-L 3-L 4-.L I-AA I I 2 2 II 6.-Y 6-Y 6-U 6-T 6-T 6-S 6-S f...X 6-Y 6-Y 6-X 6-X LOCATION !APP FIGl 3287 32A7 22B2,40AI 22E2,40CI 24f3 24H3 23A4,38G2 23B4,38Hi l23B4,38H7 23C4,3BH7 22A2,40B3 22C2,40C3 20A2,3BCI 20D2,38EI 20F2,3BB6 l0A7,38E6 20D7,39CI 20F7,~EI I-AA I-AA 6-Q 6-Q 6-P 6-P 6-0 6-0 6-0 5::0 ~ 9,22 6"N 6-N,P 6-N,P 6-N,P 6-N,P 6-N,P 6-N,P 6-N,P 6-N,P 6-0 6-0 6~N T I RLA RcB RL8A RL88 RLSA RLSAA RLS8 RLS8A RPO F<; ,,RELAYS 1406 1406 17E7 17F7 17G7 17H7 17AI 1781 37E6 37B6 15A6 1586 15C6 30C2 15C6 1506 15£6 25GI 25FI 25GI 25HI 3GI £OPT 11 11 9,22 9,22 9,22 9,22 9,22 9,22 9,22 9,22 9,22 9,22 9,22 9,22 9,22 DESIG RCTB RCT8A RGA RGAA RG8 RGBA RHKA RHK~ RLO RLI RLA RLAA RLA~ 1111"ATION IAPP F1r,J EOPT 7 7 5 5 5 5 5 5 19 19 8 8 8 !I 8 8 8 10 10 10 10 4 LT8 LT9 LTA LTAA 21A2,39C6 21D2,:l9E6 22A7,4QA7 22A~40A7 9,22 9,22 9,22 9,22 LTB LTBA LTCA LTCB 22A4,4087 22B4,«JB7 22Gl,40CI 22G5,40DI 9,22 9,22 9,22 9.22 6-0 6-0 6-N 6-N RPI RPAO RPAI RUCA 3G2 5H6 5H6 805 LTS2 LTS3 LTS4 LTS5 21 F2 21A7 21C7 21£7 9 9 9 9 RUCB 8E5 7 so LTS6 LTS7 LTSB LTS9 21 F7 22f'I 22£1 22£1 8F5 B.H5 9 9 9 9 7 7 6-P 6-P 6-P 6-P 6-P 6-P 6-P 6-P SI S2 S3 S4 S5 S6 S7 IOCO IOC2 IOC4 IOC5 IOC7 I ICO I IC2 I IC4 7 7 7 7 3000 IF3 IH2 36F5 NAA NAB NCA NCB 2562 25B7 25C2 25C7 10 10 10 ID NT 18G5 6-K 6-J 6-K 6-J 9,22 6-l;M I I 2-N 2-P 1IC5 llC7 2582 25B7 1206 1206 12F6 12F6 35F8 24AO 24CO 2400 2400 OT20-24 OT25-29 35F5 35F5 SB 59 SAA SAB SEA SEAA SEB SEBA $L20-29 SMCO SMCI SMC2 SMC3 7 7 10 10 2517 II 3 3 21 10 10 RC RI RADA RAOB 2E8 2G8 17A7 17A7 4 4 5 5 24EO 24EO 24FO 24GO 15 15 16 16 RAIA RAIB RCAD RCAI RC80 RCBI RCCD RCCI 17C7 17C7 5AI 5EI 5BI 5£1 5CI 5FI 5 5 5 5 5 5 5 5 RCOO RCOI RCEO RCEI 5CI 5GI 501 5GI 5 5 ~KA 26A7 2687 14C6 14C6 8 6-AA 6-AA 6-G 6-G 6-G 6-G 6-H 6-H 6-H 6-H 6-H 6-H 6-H 6-H 6-H 6-H 6-R 6-R 6-Y 6-Y SMC4 SMC5 SMC6 SMC7 LUCA LUCB MAL M()tl 2-7 b-( I I FS RELAYS MON A,B,C MS MTA MTB KB RCTA RCTAA ~ 5 5 8 7 7 6-V 6-U I-AB SWBD APP CAB EX-T 6-K 6-J 4 7 7 7 7 7 7 7 7 7 7 7 17 16 15 I I SMCB SMRA SMRAA SMR8 24GO 15E2 15F2 15F2 16 SMRBA SMTA SMTB SDA 15G2 23f2 23G2 15A2 8 9,22 9,22 8 SOB STA STAR STB STBR 15B2 25A2 25A2 25A7 T2 T3 T4 T!S 3AI 3CI 3A4 3C4 25A7 8 8 8 6-X 6-U 6-G 6-G 6-G 6-G 6-G 13-G EXT EXT 6-T 6-T 6-T I-AA o-S 6-S 6-S 6-K 6-K 6-J 6-J 6-Z 6-Z 6-W 6-W 6-Y 6-U e-v 2-Q 4-AA 3-Y 2-L 2-L 3-V 3-Y 4-AA 4-AA 4-AA 6-T 6-T e-S 6-S 6-0 6-0 6-R 6-R 6-K 6-K 6-J 6-K 4 4 6-AA 6-AA 6-AA 6-AA 4 LOCATION IAPP FIG.I EOPT T6 T7 TA2 TA3 TA4 TA5 TA6 TA7 TAA TAAL TAB TACA 2D4 204 204 204 25G7 3GF2 25H7 4A8 4 4 4 4 10 II 10 7 TAC~ 488 488 4C8 31AO 7 7 7 II TCK2 TCK3 TCK4 3FO 3GO 3FO 3HO 4 4 4 4 TCS2 TCS3 TCS4 TCS5 4AI 401 4FI 4A3 I I 2 2 6-Z 6-Z 6-Z 6-Z 2-M 2-M 3-M 3-M TCS6 TCS7 TEAO TEAi 403 4F3 2EI 2FI 2 2 4 4 4-M 4-M 6-AB 6-AB TEA2 TEA3 TEBO TEBI 2FI 2FI 2GI 2HI 4 4 4 4 6-AB 6-AB 6-AA 6-AA TEB2 TEB3 THC2 THC3 2HI 2HI 4BI 401 4 4 I I THC4 THC5 THC6 THC7 4GI 4B3 403 4G3 2 2 2 2 6-AA 6-AA 2-M 2-M 3-M 3-M 4-M 4-M TKC TKB TKS TKAO TKAB TKA9 TK80 TKBB 5A6 506 5F6 5B6 506 5F6 5C6 5E6 6 I 6 6 I 6 6 I TKB9 TM2 TM3 TM4 TM5 TM6 TM7 TMA TMB TOA TOAL TOALA 5G6 4CI 4EI 4HI 6 4C3 4£3 4H3 25G4 25H4 25F7 3382 3382 25F7 26F2 26G2 26F7 26G7 3G4 3G5 3G6 2 2 2 10 10 10 TC~I 6-Y 6-U 6-U 1 I FS RELAIS 3A8 3C8 204 204 TA~ TA TAL 6-W 6-W 6-W 6-W 6-W 6-W 6-W 6-W 6-W 6-W 6-K 6-J 8 10 10 ID 10 4 OESIG TOB TDKA TOKB TOLA TOLB TP2 TP3 TP4 4 4 4 4 I I 2 II II 10 10 10 10 ID 4 4 4 6-AA 6-AA 6-AB 6-A8 6-AB 6-AB 6-AB 6-AB 6-K I-AA 6-J 6-Y 6-Y 6-Y 6-Y I-AA 4-Z 2-L 4-Z 4-Z 2-L 4-Z 4-Z 2-L 4;Z 2-M 2-M 3-M 3-M 4-M 4-M 6-K 6-J 6-K I-AA I-AA I I TU5 TU6 TU7 '""ATION FS !APP f IG.i EOPT RELAYS 3G7 4 6-Z 3G7 4 6-Z 3GB 4 6-Z 2AI 4 6-AB 2CI 4 6-AA 2502 .o 6-K 2A4 4 6-AB 2A4 4 6-AB 3104 II I-AA 2507 10 6-J 4E8 6 4-Z 4H8 6 4-Z 14A2 7 6-Y 1482 7 6-Y 14E2 7 e-x 14£2 7 6-X 14C2 7 6-Y 1482 7 6-Y 14F2 7 6-X 14F2 7 6-X 2287,40C7 9,22 6-0 'i.2C7,40C7 9,22 6-0 408 6 4-Z 4F8 6 4-Z 3G3 4 6-Z 3G4 4 6-Z 4E8 6 4-Z 4G8 6 4-Z 1902 8 6-R 18E5 8 6-R 18F5 8 6-R 18B5 8 6-R 4BI I 2-t.l 4EI I 2-t.l 4GI 2 3-M 4B3 2 3-M 4E3 2 4-M 4G3 2 4-M LIO UI U2 U3 U4 U5 U6 U7 661 6EI 686 6E6 781 7EI 7B6 7E6 7 7 7 7 7 7 7 7 6-V 6-V 6-Y 6-Y 6-Y 6-Y 6-U 6-U us U9 UAL UAL I UALIA UAL2 UEA LIEB 881 BEi 29B3 2903 29C3 29A2 808 8F8 7 7 II 11 II 7 7 6-U 6-U I-AA I-AA I-AA I-AA 6-Y 6-U ULA ULB 8G5 8H5 7 7 6-V 6-U OESIG TP5 TP6 TP7 TRO TRI TRA TRAO TRAI TRAL TRB TRCO TRCI TRCA TR CAA TRC8 TRCBA TRKA TRKAA TRKB TRKBA TRLA TRLB TRIAO TRMI TRPD TRPI TRUO TRUI TS TSOA TSOB TT TU2 TU3 TU4 II OESIG 9,22 9,22 9,22 9,22 9,22 9,22 9,22 9,22 xc 3BAO 3201 2407 2487 22E7,«H 12C6 22 II 9,22 9,22 9,22 9,22 XCAL ZIL ZL ZLG ZU 6-L,M 6-L,M 6-L,M 6-L,M ZEH .... ttO. - 230 DllC " 240 S Ai" l'MT• Kl; - 6-L,M 6-L,M 6-L,M 6-L,M 6-~ R ~ 270 300 PJS IA 6-L,M 6-L,M 6-L,M i !~ '--- ---,..- 6-~ ~ 330 r~j '-- ~ 350 m~~· Rl1 ~7B PJS ~ f:I f37· LINE, LINK,AND MARKER CIRCU® i! I BELL TELEPHONE LABORATORIES INC01'"°RAT•D ! '.,,, 118 !\4. '!'·0.1. 128 ~1l P. QB. RELAYS 24C7 32f7 24A7 3207 22D8,40EB 22C8,4008 12B6 29G3 l!?- R. A.C 4A 6-J 6-K 6-J 6-K 6-J 6-Z 6-Z 6-Z !I S.7-11~ - LOCATION I I FS !APP FIGJ EOPT WIL WILA WL WLA WLG WLGA WU WUA DRAWJ;G TCI Library www.telephonecollectors.info SD-657 ~l-Ol-A4 1-·-• 65 -"'""""u·•·•· (~'\. ;'o) \" et>. - .· Ullt!llWillll!JWJmU'ifi~~. '!ll. . . . lll!Jii,, ''" ~-,·~J." O,illl!ll~J·~·d-i,~llQLi$$£tM-~~··:...1.1 .•• APPARATUS INDEX (CONT) OESIG I I FS Lu<' AT ION APP Fl~. EQPT OESIG 'llO'llS 3685 36E5 20 20 CC1 CC2 C01 C02 C03 C04 COSA COSB 16C4 16f4 9C7 9C8 007 40E3 40H3 8 R 8 8 8 8 22 22 01 02 3883 3!133 8 8 H H H H 1 G3 6F5 7H4 35A2 2 1 1 1 A 8 r' 1 I II I HA H8 HE HO ~8 287 2C7 2C7 287 1 22 22 22 22 22 22 22 22 B LTSB LTSC 21E2, 8 39E5 8 3965 14 14 13 12 2 2 3 4 LTA6 LTA7 LTA8 LTA9 ZOC5,39CC !20F5,39EO 21A0,39C< 21C0,39E4 9,22 9,22 9,22 9,2? THM~00-04l 3406 34F9 34G6 12 12 12 4 4 4 LlB2 LlB3 LTB4 LIBS 2000 2000 20GO 20GO 9 9 THM 05,06 Tff.107 Tff.1t,09l THM 111-17 T~ 18,19) 1783 9F3 17C3 12 13 13 4 3 3 LlB6 LTB7 LlB8 LlB9 2005 2005 2181 2188 9 9 9 9 Tff,180 Tl-t.,( 81-84) THM(85-89) 34f9 9F3 3406 12 12 12 4 4 4 PC 3f.G4 S20-29 3507 SM0-9 24A4-F4 24H5-G' 9,22 5G6 5E6 6 1 TKA9 TK89 MAGNETS, SELECT SMt-8i° SM 0-8 1 SM 0-8 2 24Hc h2,13,14 24G6 h2,13,1; 24A3 2, 13, 1 • SMr-8)3 SM 0-8i4 SM 0-8 5 2483 2483 24C3 12,13, 14 12,13,14 2,13,14 S(0-9) IOC-, I IC35H5 9C4, 904 7 SM(0-8)6 SM!0-8l7 SM 0-8 8 2403 2,13,14 2403 h2,13,14 24E3 h2,13,14 I 9,22 SM(0-8)9 24F3 h2,13,14 3G4-8 3G3 4 4 JACKS L20-29 L30-79 3500 1 D1 3 3 RESISTORS LAMPS cs 18AO 7 GOAL 3389 11 JRAL 3308 33FB 33F8 LAL1 LAL2 MAL 33H8 RLAL 3308 TAAL TAL TOAL TRAL 33G8 33£8 33£8 33C8 T<; UAL UAL1 UAL? 33G8 3388 3388 33G8 XCAL 33B9 COSA COS8 2305,40F3 2305,4063 L02 L03 LOS ?083 2003 20G3 2009 9 9 9 9 L06 L07 LOS L09 2008 2008 2184 21E4 9 9 9 L12 L13 L14 L15 2003 2003 20G3 2088 9 9 9 9 L16 L17 L18 L19 2006 20G8 2184 21£4 9 9 9 9 LTA2 LTA3 LTA4 LTA5 2oA0,38BO 20C0,38EC 20F0,38B5 20F5,38E' 9,22 9,22 9,22 9,22 ·LO~ 11 OESl6 EQPT DESIG MARKER TO MARKER FS LOC FS LOC OESIG MARKER TO MARKER MARKER TO MARKER ROS R07 ROB R09 27CI 27CI 27Cl 2781 SMCO SMC! SMC6 SMCS 24AO 24CO 24FO 24GO TML2 TML3 TML4 TML5 4Al 401 4Ff 4A4 A5 A6 A7 AS 31F5 31G2 31E6 31E6 Rl2 Rl3 Rl4 Rl5 2701 27C1 27CI 27Cf 404 4F4 4AO 400 21 34FS 31E7 3fGS 31FB Rl6 Rf7 RIB Rl9 27Cf 27CI 27CI 2781 23F7 2367 19G4 27EI 27CI 27CI 27Cl TML6 TML7 TMU2 TMU3 A9 AfO Al1 Al2 SMTA SMTB TC T02 T03 T04 T05 BAT 36C3 RCO RCI RL RLO RU 36C3 27Ci 27C4 27Cl 27Cf 4FO 4A3 403 4F3 1 ro6 T07 TOB T09 TMU4 TMU5 TMUS TMU7 30C3 1904 19E4 f904 19E4 2701 27C4 27Cl 27tt 3382 26F5 26FO 26G5 26GO RLAL RSA RSB RSC RSO Tl2 Tf3 Tl4 Tl5 TOAL TOKAL TOK AU TOKBL lUKBU 2704 27CI 27Cf 27CI Tl6 Tl7 TlB Tl9 27CI 27CI 27CI 2781 3fAO 27CI 27C! 27CI TAL TAAL TDMO TOMI THC THI TH2 TH3 TH4 TH5 SC6 6GS 7C2 7GI TH6 TH7 THB TH9 706 7G6 BDI BGl TKOO TKOl 36H3 36H3 TK9B 3600 TKLO TKLB TKL9 5A6 506 5R> TKUO TKU8 TKU9 5A5 505 5F5 9 9 9,22 9,22 9,22 9,22 Ill GA 22E8, 4008 1287 29G4 9,22 12C7 FS LOC 3164 31G4 31F2 3165 24C7 32F8 24A7 3208 lU OESIG Al A2 A3 A4 WIL WILA WL WLA WU WUA FS LOC MARKER TO MARKER 35H5 1£6 1E6 1E6 10 TP2-7 TRPO,I LOCATION fAPP FIG. LHM(20-29) LHMp0-39l LHM 40-59 LHM(60-79) 3702-3 sec FS RESISTORS RLSA,B SMT(A,8) OESIG HOLD 8 8 8 8 35C6 38CI 38EI 3BC6 • 38FS 39CI 39FI 39CS 39F6 20GI, 3800 21FO, L LT2 LT3 LT4 LT5 LTS LT7 LTB LT9 LTSA LOCATION APP FIG. EQPT I FS MAGNETS LEAD INDEX 9,22 9,22 9,22 go~ Jf~ COSB COT ~ cso 1804 1882 CS4 CS3 CS4 CS5 f8C2 1802 1802 18E2 CS6 CS7 CSB CS9 18F2 18F2 18G2 1BH2 GRO 36G3 S02 S03 S04 S05 HE HO JRAL §~A sos L2 L3 L4 L5 3AO 3CO 3A4 3C4 L6 L7 3A7 3C7 LAU LAL2 LG LHO LHI LH2 LH3 LH4 LH5 3283 29A9 12~.~~ SOI 6GI 606 6GS 7Dt 7GI LHS LH7 LHS LH9 70S 7GS BDI BG! Ml M2 IF2 3186 9,22 9,22 36C3 37A5 37E5 37B!i S07 SOB S09 2781 Sl2 Sf3 St4 Sl5 2701 27Ct 27CI 27CI Sf6 Sl7 St8 S19 27CI 27CI 27CI 2781 SOb S07 SOS SD9 tOG5 10G3 IOGI IOGO SLTO SLTI· SLT2 SLT3 fOFO OF2 IOF4 IOFS SLT4 SLT5 SLTS SLT7 !OF8 llFO llF2 ltF4 SLTB SLT9 IF6 HFB 4F2 405 TPA TPB TRAL TRCLO ~OG3 36E3 36A3 601 661 TRCUO 31E4 408 4F8 408 TRCUt TS TTOA TTEA 4FB 3368 4984 1984 uoo S82 6F2 TRCU UOI U02 U03 688 SF7 U04 U05 U06 U07 782 7E2 787 7F7 UOB U09 882 8E2 UAL UAL! UAL2 XCA 2984 2903 29A2 3201 1'; 'j ,\ .;·,' I. ',, ' ~, 1' 9 MSBO-B9 OF RO RI 35HS 3"':,t R02 R03 RC4 R05 c.7flll 27CI 27CI ':l,f -., 38 27Cll ® LINE, LINK, AND MARKER CIRCUIT BELL TELEPHONE LABORATORIES INCORPORATED TCI Library www.telephonecollectors.info 65 SD-65741-0l-A5 LEAD FS LOC 3A CODE CALL CKT OR INTcRFACE TRUNK CKT R1 3SG8 R2 3SE8 s 3SG8 S1A 3SG8 DESIG DESIG S2 T1 T2 35EB 35G8 35E8 ALARM, TRANSFER,AND TEST CKT AT CA JA KA LA LAI MT OA R 33CS 1901 2988 31E4 32A3 3201 3305 33C2 ne&, 1c5 BUSY TONE TRUNK CKT s 34G7 34H7 27G3 27G3 T 27G3 BAT HM07 R BUSY VERIFICATION AUX TRUNK CKT BY IT07 LK ME NN NT R RLSE RSE 19G9 34Fb 19G2 9F9 19G:f' 18Fb 27H3 19&9 19G9 1C5 30E2 1F7 1Fb S ST90 ST90-1 T 27H3 34Db 34Db 27H3 T hes, 1e& T1 TA TT 18S 31AO 338S UO Ub 7A7 7A8 UA 29C2 KO R S T 18Hb 27H3 27H3 27H3 TR01 TR02 TR10 UO 281 281 201 6A3 US Ub 7E3 7A8 2205, 40F4 22E5, 4064 22E6,40F5 22E6,40G5 35E8 35E8 35E8 2AO 2CO 19H8 19C9 uo 683 6E3 688 6E8 U4 783 us 7F3 Ub U7 788 7F8 us B83 U9 8E3 CORDLESS PDS CKT BL20-29 BL30-79 BLB0-89 3SA7 1A7 3SA7 FS LDC DIAL CONFERENCE TRUNK CKT (STA CONT) 1600 CCC S83 DO 503 08 SB3 09 HM 3SC3 3583 IT 35D6 MON I Jsoe MON 2 JSHS 01 G JSAB RI 35EB R2 19F9 RLSE 19F9 RSE 35A8 35E8 35A8 35E8 SI S2 TI T2 JUNCTOR CKT BAT• OHMO-S RO RT 9F4 27G4 27Gb SO ST THMO-S TO 27G4 27Gb 9F4 27G4 9F3 TT 27Gb DIAL CONFERENCE CKT 35E8 35E8 35E8 LIHE CKT BAT BYE BYO cw FFE FFO IT90-99 ME MO NT RLSE 3407 19H8 19C9 23D3 19H8 19C9 34D7 34C7 34C7 18Gb 2761 ( 19HB, 34E7 C19C9, 34E7 RSO RSE RTE RTO 19C9 19H8 19H8 19C9 s 27G1 34D7 27G1 19HB 19C9 ST90-99 T TLAE TLAO REGISTER CKT 17GS 17ES 18D8 18E8 c 17GS 17ES 10H1 RVO RV1 17H1 17H2 27G7 S12-S19 SMO,SM1 SM2-SM9 27AO 24G7 24C2 COTO COT1 CPCO CPC1 1808 18E8 34F1 34F2 T3 27G7 SAS 4CO 4EO SMTA SMTB T02-T09 T12-T19 23F8 23F8 27AO 27AO CTAO CTA1 CTBO CTB1 15F7 15G7 15F7 15G7 T4 TS 4HO 4C3 Tb 4E3 T7 4H3 TFA TFB TRB TR9 11F8 11Fb 8D3 8E3 0 10H1 T8 T9 SFS TRA TRB TRT 11F8 11Fb 4F8 TRO TROA TR1 TR1A 2A1 2A1 2C1 2C1 BTAO 8TA1 BYO BY1 DC1 DC2 DC3 DC4 2E9 2E7 2G9 2G7 E F G H 10G3 1063 10G5 10GS JTAO JTA1 JTBO JT81 14A9 1489 1489 1489 18E8 18E7 LOUDSPEAKER PAGING TRUNK CKT ONO ON1 ONBO ONB1 17A8 17D8 17A8 17D6 ONGO ONG1 PCGO PCG1 17Ab 17D6 34F1 34F3 T2 3SD1 tbDO 3SA3 SD3 R RA RA1 OT1-S R1 RLSE RSE S1 T1 3SE6 3SA8 19F9 MESSAGE WAITING SERVICE KEY, INTERRUPTER,ANO POWER SU PPL Y CKT ( 105, L 3SAb ( 105, R 3SA6 19F9 3SA8 3SA8 RECORDED TELEPHONE DICTATION TRUNK CKT R2 S2 T2 35E8 35E8 3SE8 FS LOC STATION DIAL TRANSFER CONTROLLER CKT R02-R09 27AO R12-R19 27AO RGB 18Fb RGC 1BF7 S02-S09 27AO DESIG RRBO RR81 RTTO RTT1 KPCO KPC1 IT FS I LDC 10H1 10H1 1784 1704 A B 35C1 3S01 35D1 3501 3501 DESIG REGISTER CKT (CONT) S2 R2 S2 CCC CO DB FS I LDC 3SC1 3SC1 HM DIAL CONFERENCE TRUNK CKT(ATT CONT) DESIG IT CENTRAL OFFICE AND RINGDOWN TIE TRUNK CKT ~ (CONT) DESIG HM RLSO COSA COSB COSAI COSBI R2 S2 T2 TRO TR1 TTE TTO R2 S2 T2 R AUXILIARY POSITION CKT FS LDC CENTRAL OFFICE AND RINGDOWN TIE TRUNK CKT (CONT) DESIG U1 U2 U3 R1 RA S S1 ATT TRUNK CKT BAT 34F9 .HM 34F9 IT00-02 34Fb ITOS-07 34Fb '\ FS LDC INDEX RB R81 27G7 (28GJ, UBG6 f'28G3, l)8Gb (28G3, l28Gb f"28G3, L2BG6 RCTAO RCTA1 RCTBO RCT81 14C9 14C9 1409 14E9 RHMO RHM1 RRA.O RRA1 1784 17D4 17GS 17ES s T TO T2 sos TLOO TL01 TL10 TL 11 1982 1903 19B2 19D3 TLAO TLA1 TLDO TLD1 18D8 18E8 18DB 18E8 TPCO TPC1 TROO TR01 TR10 TR11 TTOO TT01 TT1 34G1 34G3 1962 1 003 1962 1 003 36E1 36A1 3680 uo U1 U2 U3 U4 U5 U6 U7 us llQ 36EO 6D2 6G2 6D7 6H7 7D2 7H2 7D7 7H7 8D2 S12 S03 S13 S04 S14 S05 S15 S06 S16 S07 S17 SOB S18 S09 S19 TfM(0-5) CCC DO DB D9 1bEO 5F3 SH3 SG3 DB DC DE OG 8C7 8C7 8Cb BCb FS LOC ~~~·3884 35F4 20B5,38C3 20C4, 3803 20C4, 38F3 20F4, 3BF3 20F4, 3808 z'OH4, 3808 20A9,38F8 20C9, 38F8 20C9,3903 20F9,3903 20F9, 3963 20G9, 3963 21A4 ,.3908 21C4, 3908 21C4, 3967 21F4, 3967 9G4 FF (E,O) RLS (E,0) RS (E,O) 19D9 19D9 1·909 FS LOC l2#~;~HW MESSAGE REGISTER CKT 102, . 3SB1 kOAP 25 DSAK ~-·~J 107 35G5 ~Di 270~ .___~ 182, 3581 300~~ HW ~E.Vii STATION MESSAGE REGISTER PULSE AND SURCHARGE CKT coo MRI MR2 MR3 TRAFFIC REGISTER CKT BAT BTOF BTPC JOF 34G4 34Cll 34C4 34EO MR4 MR5 JPC LOF NCPC 34D4 3480 34E4 OFO OFB OF9 34EO 34DO 34DO OPC OPC8 OPC9 34D4 34FO 34FO ROF STPC TOPC 34AO 34B4 34A4 TPC TPCO TPCB TPC9 34G4 34HO 34GO 34HO TRPC 34F4 MR6 MR7 MRS MR9 MRIO MRll MRl2 MRl3 MR14 RSA RS8 320 SllK .___~ 16HI 9F7 9F7 17H5, 32G6 17H5, 32AI 26E4, 4000 2684, 4000 16AI 16AO 16CI 16CO l6AO 16AO 16CO 16CO 19E4 19E3 330 PJS. ~~ 350 PJS "1111., ,__~ ' INWARD RESTRICTION CKt H(A-Ol 19H6 HE,HF 960 IR2-7 19G4 RLS 19H4 s IF5 SA IF5 Ul0-9) 19H4 2S 31:1G6 2SA 3566 552A,5528,5520,552E,605A 607A,607B,608A JACK CIRCUIT OR 6080 JACK Hin 1 AUD CIRCUIT I El 35FI I El 35FI SL TWO-WAY TIE TRUNK CKT '.) R1 R2 S1 I El 35FI I El 35FI 36H5 3588 S2 T~ T2 i 3588 STATION E~UIPMENT s S1 3Sk8 3SHB LI NE OR TRUNK ACCESS CKT. R 102,~BI T 182,3581 135 LINE, LINK, AND MARKER ~IRCUIT TCI Library www.telephonecollectors.info DESIG STATION LINE 8H? MB & BY DISPL CKT. HM07 34H6 L38AT LBB0-89 LDB0-89 S02 STATION DIAL TRANSFER TRUNK CKT DESIG ® SD-65741-0l-A6 ' '*" ~. "' •.·• DRAWING ISSUE SUPER- SEDES ISS29B OPTION INDEX APP OR LOCATION WIRING 9 19E5, 19F.5, ~G6. . 24A4,A5,B4,C4,C5,04, 05,E4,E5,F 4,F5,G4; 26A4,C4; 30F5,F6; 32G5,G6,HS 35F7 17 36C3,G4; 3702,03,66 19 E6 20 21 22 z y x w v T s R Q N M K H G F E 8 A ZA 36A-H4, E6,F6,G6 36E6,F6 9C4,904, 19E5, 19E6, 19F5, 19F6, 19G5, 19G6, 24A4, A5,ts4,85,C4 ,04{/,._5,E 4, E5,F4,F5,G4; 2 2,A4, C2 ,C4; 30F5,F6; 3284, 86,E2,E3,F2,F3 ,G6,H5 183,C2; 35A3,R2 APP. FIG.3,IB3,02e'E~ ~~~;ll~· APP OR WIRING ZB APf' OR WIRING LOCATION 35F6 ZT APP OR WIRING LOCATION APP FIG. 3, 1D1 , YN APP FIGS. 1,6 YO IOG3 zc 35E6,35F6 ZD 35A5,3586 ZE 35A5, Bl, B5,B6,Cl,G7,H8 VP ZF ZG zv APP OR WIRING LOCATION · XR 19G4 WY APP. FIG. 8, SCI, 15HI, 26F7, 26F8, Z6G8, 26H7 XU 287,2C7 wz xv APP FIG. 8 , 968, 9G9, 287,2C7 APP. FIG. 8, 6Cl, I5GI, 15G2, 15HI, 15H2, 26F7, 26F8, 26G7, 2668 VA xw APP. FIG. 3~1824'83,102, APP. FIG. 3, IB3, ID2, I03, 104, IEI, IE2, IE3,IE4,IGQ IG2,IH2,.,:$5.A3,3580. 3582, 3583, 35D8,35E2, 35FI, 35F2,35G5 ,35H2 35E3 35E3 VB APP. FIG. 3, I83, 102, 103, ID4, IEl, IE2, IE3, IE4, IGO, IG2, IH2, 3186 zw vc 3585,35C5 YQ 19E1 YR 19Dl,19E1 APP FIG. 12, IA6,06, E5 YS 25EI ,25E6 APP FIGS. 13, 14, IAS. 87, D6,E5; 3585, 87, H5 YV ZJ ZK ZL ZM 31B7,31C2, 3103,31D4, 31F1,31F2 31B7,31C2,31D3,31D4, 31F1 ,31GI ZY VD 3585,3!1C5 VE 3508 zo ZR ZS XY 3!5D9 xz 16D4 WA 1604 YA APP FIGS. 12, 13 12D1,12F4 we 21E1,21E2, YC APP FIG. 9, 22AO, 22A1, 22A2,22A3,221!2, 22B3,22C0,22CI , 22C3, 2202,2203,22E1 , 22E3, 22G6,22H2,23A2,2382, 2383,23C3, 3284, 3286, 32E2,32E3 3ZF2,32F3 YE WC 19F5, 19F6, 19G5, 19G6, 21El,21E2 1283,12G3 WO YX 5F3,5G3,5H3,&,llB7,8C7, 8C8 XA APP FIG.8, l683,16C3,16C4 5H5 5H5, 7H3,35H6, 36A2, 36A3, 3683,36C0,36C3 36D3,36E2,38E3,36F3, 36G3, 3 6H3,25EI, 25E6 16FS,1 1283,12F2,19G7 1283, I 2F2, 19G7, 2864, 2866 1F7, IF8 ,35G7,35H7 1685,1~~1604,16F~ WG WH 186,3586,35C6. WI 3586 35E6 WJ IBH5, 2304,40FO XO · APP FIG. I WK 3600 WL 19E3,19E4 XE 35H5 WM 19El, 19D4, 19E3,19E4 XF 22E5,22E6 WN 3!508 XG 985,905 IOCO 10C2,IOC4, 1ocsj0Ci,1100-: 11c2, 11C4, WP 35E3,35F3 19E XB 1685,16£5, 19E2,19F5 xc 503,31583.~ 35C3,3503, 583, IOGO 20E , ~. IOG2 YG APP FIG. I YH 315C7 YJ APP FIG. f, 35C6 YI< 25E3,25E8,25G5, 25H5 YL 25E3,25EB,25G5, 25H5 ,21C3,21F2 WQ 3M:3,35F3 WR ~i3,20A-H3, 20A-H9,2.0B6 · 9C4, 904,10ftao10C2,IOC4, 10C6,I~~.~ 11C6,llC , WS 20E7,2.0G~20G2,20Gl;21C3 21F0,21F XJ 1684,161!5,16E4,16E5 XK IE7~)684,1685,16E3, 16E ,16E5; 16Hl, 17H4,19E~ 19E4, 2684, 2604,35F5 ID6,35C5 1G3, APP FIG. 4, 3F2,3F3,3F4 3F5, 3F6,3F7, 3F8 WT WU XO 1F!i,9BD,9C0,35G6 XP ~~6E2 6E7. 782 , 7E ,7E7,35li,eBi,8Ei, 980,12C2,9C0,12E2,19H4 XQ 1964 315E3 YM VF 35D7, 35E7 VG APP. FIG. I, 2, 4CO, 4C3, 4EO, 4FO, 4GO, 4HO, 31CO, 31D0,31EO VH APP. FIG. I, 2, 480, 483, 4C0,4C3, 400,4E0,4GO, 4H0,3180,31C0,31DO vi: APP. F11:i. 2, 4E3,4F3, 463, 4H3, 31FO VJ APP. FIG. 2, 4D3, 4D5, 4E3, 4G3, 4H3, 31EO, 31FO VK APP. FIG.4, 3F2,3F3, 3F4, 3F5, 3F6,3F7,3F8 ~°M5fiAl87.3588,35E3 1IC6;!11C8~2Cl87,20E2, VF WF 24A4-F4,24G5-H5 1D6,35C5 APP FIGS. 1,2, 315A2 2A1, 2C0,4F8, 883, 8E3, llF6, 11F8, 18E6,23F7 23G7 2Bl,2DO ,11F6,JIF8, 18E6 12C1, 12D1, 12F4 22AO, APP FIG. 9, 22A1, 22A3,2282, 2283, 22C0,22CI, 22C3,22D2, 2203,22E1,22E3,22G6, 22G7,22HI, 22H3,23A2, 23B2,26A2, 26C2, 3286, 3287, 32E2, 32F2, 32F3 ~fdGl~F5, YW XH ZP xx WE APP FIGS. 12, 13 YD zo APP FIG. 12, IA6,B7,06 E5 ' zz YB ZN 7A8, 3406, 34F6 ID3,1°1llE~IE ~~G2, IH2t35 3, ,83, , ; 31A APP FIG 3 183 D2,D3 D~ E3,E4, IGO,IG2,IH2,31i!i6 25E1 ,25E6 zx ZI 1005 APP FIGS. 13, 14,IA6, 06,E5; 3585, 87, H5 YT IG3,35A2 APP FIGS. 1,2;1G3;,]5A2 APP FIGS~ 2,4~14, Sl£ElS 2,3,4, ,7,8,18, 24,31; 105,E5; 10G1, G3,G5,G7,G8; 11G1 ,G3, G5,G9; 17F8,G8; 3461, E4 31F2,F3,G2,G3 185,C5,F6 185,C5,F6 35E7 35E3 35G7 APP FIGS. 1,2;105;3A3 CO,C3; 6C3,C8,F3,F8; 7C3,C8,F3,F8; 8C3,F3 35E3 APP FIGS, 1,2;105;3A3, CO,C3; 6C3,C8,F3,F8; 7C3,C8,F3,F8; 8C3,F3 APP FIG, 2; 105b3A6, CG; 6C3,C8,F3,F ; 7C3,C8,F3,F8; 8C3,F3 APP FIG. 2; 105~3A6; CS; 6C3,C8,F3,f ; 7C3,C8,F3,F8; ~C3,F3 APP FIGS. 4,7,9,10, 5H5,H6; 12C7; 1682 86,F2,F6; 25C1,D1, 03 05,08 APP FIGS. 4,7,9,10; 5H5,H6; 12C7· 1682i 86,F2,F6; 2SC1,D1,03, 05,08 18E7 LOCATION WIRING 35EO ZH 2 ~Off LOCATION WV WW wx \ IA~F4,34H7,35E4,35F4, 3884 APP. FIG. 8, ll,~9C8, 9D7 908 15C2 I D2; 1683, 168'5, 16C'4,16Gi4, 16E3, 16E5, 32F5,32G5 APP FIGS. 161,11, !K:7 CB 07 0 ; 10CO, c2,t4,ts,ta; 11co, C2,C4,C6,C8; 1683,85, C4,G4,E3,E5; 32A1 ~1, D1 ,F5,F6,G&G6; 3 4, 85 ,B8,38A3, ;3983,E5,G~ 16A4,A5,03,04,05; 32A1,81,G6; 40CO,DO 1E7; 16A3,A4,ASF03,D5 H1ci 32A1 ,81; 35 5; 4 0,00 APP. FIG.6,7,9&n,15EI, 15E2, 15FI, 15F2, 15GI, 15G2 APP. FIG.6,7,9,22S984, 904, 12Al, 12Hl, I El,15E2, 15FI, 15F2,15Gl,15G2 LINE,LINK, AND MARKER CIRCUIT BEU. TELEPHONE LABORATORIES INCORPORATSD WOl(MI) -·---------------------------------- TCI Library www.telephonecollectors.info - - - - - - - - - - - - - - - - · - · - - - - · · - ----·-----'~--------. - @ 50-65741-01-A7 65 2 0 4 3 5 6 7 31 8 9 DRAWING SHEET NOTES: TABLE I I. RELAY ASSOCIATED S-- LEAD CONTACT TM3 TM4 TM5 A IM 2M 3M 4M 5M 7M 9M IOM llM 12M FS I S30 S31 540 S41 S50 S51 532 S33 534 S35 S36 S37 542 S52 . S62 S43 S44 S45 S46 S47 S48 S49 553 554 S55 556 S57 S58 S59 S63 S38 539 STATION LINE S72 573 S64 S65 574 S66 567 S68 576 S69 .--------. ~ LHM60-79 ALM TRANS (z~zx) LHM30-59 AND TST Cl<T I' u BL30-79 TO CORDLESS S75 ~3-7 TST LINE j S77 578 579 ,,,. 1 1)R j T \ \ IT. 3 f ~ PROVIDED ON LINE 390NLY --11----i r.;.,<i ) r2T,4' •5 t .Q ISSUE RELAYS (AT) AND <ATA) ARE NORMALLY OPERATED EXCEPT DURING POWER FAILURES. 2. FOR Y OPTION, MON 2-7 AND CO :30-79 RELAYS ARE LOCATED AT THE SWITCHBOARD. FOR XW AND XX OPTIONS, MON A,B,C AND CO :30-79 RELAYS ARE LOCATED IN LINE CO UNIT IN APP. CAB. FR GROUND DESIGNATES SWITCHBOARD FRAME GROUND. POSITION CKT PROVIDED ON ~ONLY I I T ~ (!) Y~ T' -----------~-~-!::=---ir-:;::::=!'..-~=:::-----------------<-~•~--+• ~>----+---------+i.r-----( Y, xw.xxv~) • B ( Y, XW:XX,VA,VB ) I- ® i== ® T I ', 'AT'' TO STATION LINE OR LINE OR T