1 A2 KEY TELEPHONE SYSTEM KEY SERVICE UNITS 513-, 514-, AND 515-TYPE

Transcription

1 BELL SYSTEM PRACTCES AT & TCo Standard SECN ssue 6, March 1977 SERVCE 1 A2 KEY TELEPHONE SYSTEM KEY SERVCE UNTS 513-, 514-, AND 515-TYPE CONTENTS PAGE CONTENTS PAGE 1. GENERAL 2. DENTFCAN PURPOSE APPLCAN ORDERNG GUDE 6 to a 513- or 515-Type KSU Using Furnished Power Cord 22 6 Table G-Connections Required for 6 Adding 514-Type KSU to a 513-Type KSU 23 6 Table H-Connections for Audible 7 Signaling Circuits 24 DESGN FEA lures A. General B. 513-Type Key Service c. 514-Type Key Service Unit NSTALLAN 1 Table 1-ption Connections for Lamp Circuits 25 1 Fig. &-Connections for 4-Type KTU Unit 1 (CO/PBX Line Circuit) 26 Fig. 9-Connections for 4G KTU (CO/PBX Line Circuit) 28 D. 515-Type Key Service Unit 18 Fig. 1 -Connections for 4 1A KTU 19 (Manual ntercom Circuit) 29 PLANNNG NSTALLNG 19 Fig. 11-Connections for 47B (MD) or 47C KTU (Dial ntercom, 1-Code 21 Selector Circuit) 3 4. CONNECNS 22 Fig. 12-Connections for 413A KTU (Auxiliary Ringup Circuit) MANTENANCE Factory Wiring 22 Fig. 13-Connections for 414A KTU (Manual Signaling, Ringdown Private 23 Line Circuit) 32 Table F-Connections Required for Connecting an External Power Supply Fig. 14-Connections for 415A KTU (Automatic, DC Signaling, Private Line Circuit) 33 NOTCE Not for use or disclosure outside the Bell System except under written agreement Printed in U.S.A. Page 1 BSP S i l.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :51:47

2 SECN CONTENTS PAGE CONTENTS PAGE Fig. S-Connections for 416A KTU (Station Line Circuit) 34 Fig. 16-Connections for 417 A KTU (Add-on Conference Circuit) 35 Fig. 17 -Connections for 418A KTU (Short Range, DC Signaling, Private Line Circuit) 36 Fig. S-Connections for 419A KTU (Automatic Signaling, Ringdown Private Line Circuit) 37 Fig. 19-Connections for 42A KTU (Dial ntercom, Long Line Circuit) 38 Fig. 2-Connections for 421A KTU (Power Failure Transfer Circuit) 39 Fig. 21-Connections for 421 A KTU (DSS Feature of Dial ntercom) 4 Fig. 22-Connections for 421A KTU (Audible Signal Suppression) 41 Fig. 28-Connections for 427B (Series 4) or C KTU (Part of UCH-NE Adapter Circuit) 47 Fig. 29-Connections for 428A KTU (Multiline Exclusion Circuit) 48 Fig. 3-Connections for 429A (MD) or 4298 KTU and 43A KTU (Supplementary Hold Detector and Flutter Generator Circuit) 49 Fig. 31 -Connections for 448A KTU (Variable Delay Timer Circuit) 5 Fig. 32-Connections for 449A KTU (mmediate Transfer Control Circuit) 52 Fig. 33-Connections for 45 1 B KTU (Music-on-Hold Circuit) 54 Fig. 34-Connections for 461A KTU (Manual Signaling, Ringdown Private Line Circuit) 55 Fig. 23-Connections for 422B KTU (Dial ntercom, Station Busy Selector Circuit) 42 Fig. 24-Connections for 423A KTU (Dial ntercom, Audible Ringback, Dial and Busy Tone Circuit) 43 Fig. 25-Connections for 424B (MD) or 424C KTU (Dial ntercom, 19-Code Selector Circuit) 44 Fig. 26-Connections for 425A (MD) or 425B KTU (Dial ntercom, Flashing Lamp Circuit) 46 Fig. 35 -Connections for 467A KTU (Low-Voltage Monitor Circuit) 56 Fig. 36-Connections for 469A KTU (Lamp Extender Circuit) 57 Fig. 37-Connections for 471A KTU (Battery Reversal Toll Restriction Circuit) 58 Fig. 38-Connections for 479A KTU (Rotary Dial Toll Restriction Circuit) 59 Fig. 39-Connections for Preset Conference Circuit for Dial ntercom Line 6 Fig. 27-Connections for 426A KTU (Part of UCH-NE Adapter Circuit) 47 Fig. 4-Connections from 69E or F Apparatus Mounting to External Connecting Blocks 61 Page 2 BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :52:6

3 SS 6, SECN CONTENTS PAGE CONTENTS PAGE Fig. 41-Power Supply Connections for 69E or F Apparatus Mounting 62 Fig. 42-Connections from 4A, B, C, or D (CO/PBX Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 63 Fig. 43-Connections from 4G KTU (CO/PBX Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 64 Fig. 44-Connections from 41A KTU (Manual ntercom Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 65 Fig. 49-Connections from 417A KTU (Add-on Conference Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 69 Fig. 5-Connections from 418A KTU (Short Range, DC Signaling, Private Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks Fig. 51-Connections from 419A KTU (Automatic Signaling, Ringdown Private Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 7 71 Fig. 45-Connections from 413A KTU (Auxiliary Ringup Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 66 Fig. 52-Connections from 42A KTU (Dial ntercom, Long Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 72 Fig. 46-Connections from 414A KTU (Manual Signaling, Ringdown Private Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 67 Fig. 53-Connections from 421A KTU (Power Failure Transfer Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 73 Fig. 47 -Connections from 415A KTU (Automatic, DC Signaling, Private Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 68 Fig. 54-Connections from 42 1 A KTU (DSS Feature of Dial ntercom) in 69E or F Apparatus Mounting to External Connecting Blocks 74 Fig. 48-Connections from 416A KTU (Station Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 68 Fig. 55-Connections from 421A KTU (Audible Signal Suppression) in 69E or F Apparatus Mounting to External Connecting Blocks 75 Page 3 BSP S i jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :52:26

4 SECN CONTENTS PAGE CONTENTS PAGE Fig. 56-Connections from 422A (MD) or 422B KTU (Dial ntercom, Station Busy Selector Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 76 Fig. 57-Connections from 423A KTU (Dial ntercom, Audible Ringback, Dial and Busy Tone Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 77 Fig. 58-Connections from 425A (MD) or 425B KTU (Dial ntercom, Flashing Lamp Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 77 Fig. 59-Connections from 426A KTU (Part of UCH-NE Adapter Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 78 Fig. 63-Connections from 43A KTU (Flutter Generator Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 8 Fig. 64-Connections from 44A or 478B KTU (UCH-NE Adapter Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 81 Fig. 65-Connections from 448A KTU (Variable Delay Timer Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 82 Fig. 66-Connections from 449A KTU (mmediate Transfer Control Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 84 Fig. 6-Connections from 427B (Series 4) or C KTU (Part of UCH-NE Adapter Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 78 Fig. 67 -Connections from 45 1 B KTU (Music-on-Hold Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 86 Fig. 61-Connections from 428A KTU (Multiline Exclusion Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 79 Fig. 68-Connections from 461A KTU (Manual Signaling, Ringdown Private Line Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 87 Fig. 62-Connections from 429A (MD) or 429B KTU (Supplementary Hold Detector Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 79 Fig. 69-Connections from 467A KTU (Low-Voltage Monitor Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 88 Page 4 BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :53:9

5 SS 6, SECN CONTENTS PAGE CONTENTS PAGE Fig. 7-Connections from 469A KTU (Lamp Extender Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 88 Fig. 71-Connections from 471A KTU (Battery Reversal Toll Restriction Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 89 Fig. 72-Connections from 479A KTU (Rotary Dial Toll Restriction Circuit) in 69E or F Apparatus Mounting to External Connecting Blocks 9 Fig. 73-Cannections from Preset Conference Circuit to Dial ntercom Line in 69E or F Apparatus Mounting to External Connecting Blocks 91 Fig. 74-Factory-Furnished Wiring for Al l and BT l Circuits 92 Fig. 7 5-Factory-Furnished Wiring for Bat. A(l) and Bat. A(2) Circuits 92 Fig. 76-Factory-Furnished Wiring for Bat. B(l) and Bat. B(2) Circuits 93 Fig. 78-Factory-Furnished Wiring for Lamp Steady Circuits 95 Fig. 79-Factory-Furnished Wiring for Lamp Flash Circuits 96 Fig. SO-Factory-Furnished Wiring for Lamp Wink Circuits 98 Fig. 81-Factory-Furnished Wiring for ±1 Volt, ±18 Volt, ±15 Volt and RN Audible Signaling Circuits 1 Fig. 82-Factory-Furnished Wiring for Jack 1 11 Fig. 83-Factory-Furnished Wiring for Jack 2 12 Fig. 84-Factory-Furnished Wiring for Jack 3 13 Fig. 85 -Factory-Furnished Wiring for Jack 4 13 Fig. 86-Factory-Furnished Wiring for Jack 5 13 Fig. 87 -Factory-Furnished Wiring for Jack 6 13 Fig. 77 -Factory-Furnished Wiring for MB, MG and ST Circuits 94 Fig. 88-Factory-Furnished Wiring for Jack 7 13 Page 5 g Scanned by Frank Harrell, (Cowboy Frank Castle Rock, Colorado Oct 14, :53:32

6 SECN CONTENTS PAGE Fig. 89-Factory-Furnished Wiring for Jack Fig. 9-Factory-Furnished Wiring for Jack Fig. 91-Factory-Furnished Wiring for Jack Fig. 92-Factory-Furnished Wiring for Jack Fig. 93-Factory-Furnished Wiring for Jack Fig. 94-Factory-Furnished Wiring for Jack Fig. 95-Factory-Furnished Wiring for Jack Fig. 96-Factory-Furnished Wiring for Jack Fig. 97-Factory-Furnished Wiring for Jack SD , ssue 14 (47B [MD] or C, 42A, 422A [MD], 422B, 423A, 424B [MD] or C, 425A [MD], and 425B KTUs) SD , ssue 4 (413A, 421A, 448A, and 449A KTUs) SD , ssue 9 (414A, 415A, 416A, 418A, 419A, 461A, and 469A KTUs) SD , ssue 2 (417A KTU) SD , ssue 8 (426A and 427B, Series 4, or 427C KTUs) SD , ssue 5 (428A KTU) sd , ssue 1 (451B KTU) SD , ssue 1 (467A KTU). SD , ssue 6 (429A [MD], 429B, and 43A KTUs) SD , ssue 1 (44A KTU) sd , ssue 1 (478B KTU) SD , ssue 1 (471A and 479A KTU). 1. GENERAL 1.1 This section provides identification, connection, and maintenance information for the 513-, 514-, and 515-type KSUs used in 1A2 KTS arrangements. 1.2 This section is reissued to add information on the: 4G, 451B, 467A, 471A, 478B, and 479A KTUs 421A KTU used for audible signal suppression. 1.3 This issue of the section is based on the following drawings: SD , ssue 15 (4D KTU) sd , ssue 1 (4G KTU). SD , ssue 6 (41A KTU) SD , ssue 1 (1A2 KTS, 513-, 514- and 515-type KSUs) f this section is to be used with equipment or apparatus reflecting later issues of the drawings, reference should be made to the SDs and CDs to determine the extent of the changes and the manner in which the section may be affected. 2. DENTFCAN PURPOSE 513-, 514-, and 515-type KSUs, Fig. 1, provide mounting and connecting facilities for 4-series KTUs used to provide 1A2 KTS services. APPLCAN 1A2 Key Telephone System Page 6 BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :53:5

7 SS 6, SECN KSU LATCH TAB ASSEMBLY DESGNAN STRP 914A CONNECR 913A CONNECR 4 N. KTU Fig A3 Key Service Unit, Cover Removed ORDERNG GUDE Unit, Service, Key, 513Al Unit, Service, Key, 513A2 (513Al with 19C2 power unit) Unit, Service, Key, 513A3 (513Al with 2C2 power unit) Unit, Service, Key, 514Al Unit, Service, Key, 515A2 (513A2 and 514Al) Unit, Service, Key, 515A3 (513A3 and 514Al) Unit, Telephone, Key (Order as required) (a) Replaceable Components (See Table A) (b) Optional Components (Order separately; see Table B) Unit, Service, Key, 515Al (513Al and 514Al) (c) Associated Apparatus (Order separately; see Table C) Page 7 BSP iOG ?.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :54:9

8 SECN REPLACEABLE COMPONENTS TEM NDCATES KSU USED N 513A1, A2, A3 514A1 515A1, A2, A (P-44Y169) Assembly, Tab Cover, 128A Cover, 129A Fuse, 24C (2-amp) Fuse, 24E (1/2-amp) Fuse, 24F (5-amp) (P-4V61) Strip, Designation (P-4V62) Strip, Designation (P-44Y167) Strip, Designation Unit, Power, 19C2 Unit, Power, 2C2 (513A2 Only) (515A2 Only) (513A3 Only) (515A3 Only) Page 8 BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :54:28

9 SS 6, SECN TABLE B OPNAL COMPONENTS (ORDER SEPARATELY) TEM QUANTTY NDCATES KSU USED N 513A1, A2, A3 514A1 515A1, A2, A3 Block, Connecting, 66R (P-16884) Screw, RHM 2 (For 66R3 Connecting Block) Block, Matrix, 1A (P-16853) Screw, RHM 2 (For 1A1 Matrix Block) Mounting, Apparatus, 69E 1 Mounting, Apparatus, 69F As Req'd (3 Max) (P-4V59 ) Assembly, Guide* As Req'd (P-44Y169) Assembly, Tab* As Req'd (P-44 Y167) Strip, Designation* Mounting, Apparatus, 77C 1 * Used on 69E or F apparatus mounting. Page 9 SSP i "p Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :54:47

10 SECN ASSOCATED APPARATUS (ORDER SEPARATELY) TEM QUANTTY NDCATES KSU USED N (DR WTH) 513A1, A2, AJ 514A1 515A1, A2, AJ nterrupter, KS-159, L1 (1V ac) 1 nterrupter, KS-19175, L1 (1V ac) 1 nterrupter, KS-19384, L2 (24V de) 1 nterrupter, KS-19385, L2 (24V de) (P-4J326) Cord, Power (1-1/2 ft) (P-4J327) Cord, Power (2 ft) (P-4J328) Cord, Power (4 ft) (P-4J329) Cord, Power (6 ft) (P-4J99) Cord, Power (12 ft) (513A2 & (515A2 & 513A3 Only) 515A3 Only) Unit, Power, 47C 1 Generator, Frequency, 116A (For 47C Power Unit) Battery, KS-239, L1 (For 47C Power Unit) 1 1 DESGN FEATURES A. General (a) Will accept most 4-series KTUs (see Table D for connector selection and arrangement). (b) Removable cover of glass-reinforced polyester resin. (c) Arranged for wall mounting. (The 513- and 515-type KSUs may be mounted on a floor stand using a 77-type apparatus mounting. See Section ) B. (d) 66-type connecting blocks mounted internally to connect internal and external cables and optional wiring (Fig. 2). Fig. 3 shows the terminal arrangement of the 66R-type blocks. (e) Designation strip holder and tab assembly serve as a retainer to lock KTUs in connectors. 513-Type Key Service Unit (f) Space is provided on the backboard for one 1A1 matrix block, or a second 66R3 connecting block when required. Page 1 BSP iOG j g Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :55:4

11 TABLE Dt CONNECR SELECN AND ARRANGEMENT OF 4 SERES KTUs N AND 515-TYPE KSUs 515 KSU (SEE NOTE) KTU UN.) SZE PNS SERVCE FUNCN 513 KSU1J CONNECRS 514 KSU CONNECRS J J J J J J J J J J J J J J J J B (MD) or C 8 8 Dial ntercom, 1 O Code Selector Ckt 1 * * * * * * * * * * * * * * 424B (MD) or C 8 8 Dial ntercom, 19 Code Selector Ckl 1 * * * * * * * * * * * * * * 426A & 427B (Series 4 ) or 427C UCH NE Adapter Ckt * * * * * * * * * * * * * * 1 * * * 1 * * * * 44A or 478B 8 4 UCH NE Adapter Ckt Can be used in 69E or F apparatus mounting only 425A(MD) orb 8 8 Dial ntercom, Flashing Lamp Circuit * A1J 479A 429A (MD) orb Automatic Signaling, Ringdown Private Line Ckt Rotary Dial Toll Restriction Supplementary Hold Detector Ckt * * * * * v; > _o l> m n.. 6 z., Q CQ....,.l..., i ll. p Scanned by Frank Harrell, Cowbo Frank) Castle Rock, Colorado Oct 14, :55:24

12 .. Q CQ.. TABLE D (Conti. CONNECR SELECN AND ARRANGEMENT OF 4 SERES KTUs N 513-, 514-, AND 515-TYPE KSUs ll.. z KTU (N.) SZE PNS SERVCE FUNCN 513 KSU CONNECRS 515 KSU (SEE NOTE) 514 KSU CONNECRS.1. J J J J J J J J J J J J J J J J Power Failure Transfer Ckt (General Purpose) t t t t t t 421A 4 4 ntercom DSS Audible Signal Suppression A 4 4 Delayed Transfer Control Circuit A 4 4 mmediate Transfer Control Circuit A (MD) or B 4 4 Dial ntercom, Station Busy Ckt A 4 4 Add-On Conference Circuit A 4 4 Multiline Exclusion Circuit :j: :j: :j: :j: :j: :j: :j: :j: :j: 7 8 :j: :j: 9 :j: 42A 4 18 Dial ntercom, Long Line Ckt BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank Castle Rock, Colorado Oct 14, :55:42

13 .TABLE D (Cont). CONNECR SELECN AND ARRANGEMENT OF 4 SERES KTUs N 513-,514-, AND 515-TYPE KSUs 515 KSU (SEE NOTE) KTU (N.) SZE PNS SERVCE FUNCN 513 KSU1j CONNECRS 514 KSU CONNECRS J J J J J J J 7 J J 8 11 J J J J J J J A 4 2 Dial ntercom, Aud Ringback, Dial, & Busy Tone Ckt Type 4 18 CO/PBX Line Ckt A 4 18 Manual ntercom Ckt A 4 18 Aux Ring-up Ckt A 4 2 Manual Signaling, Ringdown Private Line Ckt A 4 18 Automatic, DC Signaling, Private Line Ckt A 418A 43A 451B Station Line Ckt Short Range, DC Signaling, Private Line Ckt Flutter Generator Ckt Music-on-Hold Ckt * Vi ll _o- 111 m n --< z -.. Q (Q.. 461A 4 18 Manual Signaling, Ringdown Private Line Ckt " BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :56:7

14 TABLE D (Cont). CONNECR SELECN AND ARRANGEMENT OF 4 SERES KTUs N 513, 514-, AND 515-TYPE KSUs 11'1 q z 515 KSU KTU (N.) SZE PNS SERVCE FUNCN 513 KSU CONNECRS (SEE NOTE) 514 KSU CONNECRS J. J J J J J 4 5 J J 6 7 J J 8 11 J 12 J 13 J 14 J 15 J J J A 4 18 Low-Voltage Monitor Ckt A 4 18 Lamp Extender Ckt A 4 18 Battery Reversal Toll Restriction * Not usable. t Restricted to transfer of one station ringer. :j: One circuit only. See Table H f only 513 KSU is used, connector selection begins with lowest number available J 513 KSU 515 KSU KSU J3 J4 J5 J6 J7 J8 Jl5 Jl2.,.. J9 JO Jl6 Jl7 Jl8 p NOTE. LOCAN OF CONNECRS 513 AND 514 KSU D D ON JZ Jll Jl3 8 8 BSP i "p

15 SS 6, SECN KSU 514 KSU RGHT CARRER ASSEMBLY Fig Type Key Service Unit, Carrier Assemblies Open (g) Two interrupter connectors (J9, J1) accept any of the KS-type interrupters shown in Table C. The choice of interrupter is determined by the lamp capacity of the system and/or the type of power available for the motor. (h) Dedicated leads for battery and ground, interrupter, lamp steady, lamp flash, lamp wink, and ringing are wired to the same numbered contacts on each connector (J1-J8). These leads terminate on connecting block 3 (Fig. 4). (i) Nondedicated leads are terminated on connecting blocks 1 and 2 for connections to station and/or distribution cable, and for strapping between units when required (Fig. 4). (j) Fuse panel provides power distribution to the connectors for lamp and interrupter functions. See Table E for fusing information. (k) Can use 19C2, 2C2 or external power unit. The 2C2 power unit includes a 3-Hz frequency generator. When ringing voltage is required for a system using a 19C2 power unit, an external source must be provided. () When required, a 47C power unit is available as a battery reserve power supply for use during commercial power failures. t must be ordered separately along with a KS-239, List 1 nickel-cadmium battery pack (Table C). When the system has common audible signaling arrangements, an optional 116A frequency generator must be ordered (Table C) and mounted on the back wall of the power unit. The 47C power unit is interconnected between the standard ac operated power unit and the key telephone equipment. (See Section ) The 47C power unit may be mounted on a rack, in a 16-type apparatus cabinet or equivalent, or in a 513A or 515A1 key service unit when the regular power unit is externally mounted. (m) f an external power supply is used, as many as three 69F apparatus mountings can be mounted in the space normally occupied by the power unit. Each 69F (Fig. 5) apparatus mounting will accommodate two 4-inch (with the addition of an [P-4V59] guide Page 15 BSP i jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :56:45

16 SECN COL A, B, C, E COl f G, H ROW 66R2 CONNECT! NG BLOCK COLUMN A B c E F G H r o---o----o- o--o A B C O E f G H rt_. m rn m rn m m m m COL ' J , <4-<11, OR WETHOO OF BRNGNG N CONDUCRS FOR TERMNAN COLUt.NS ON 66R 1, 66R2 OR 66R3 CONNECTNG BLOCK 66R1 CONNECTNG BLOCK 12 o----o--<>- o--o 13 o--o o--o o--o o--o '' o---o o--o o--o o--o o--o o---o o--o o--o lb o---o o--o o--o o--o o---o o---o o--o o---o ROW COLUWN A B c E F G H o--o 42 o---o o--o o--o o--o 43 o---o---o o---o----o--<l - -' o---o--o---<>-- o--o o--o o--o o--o o--o o--o o--o o--o o--o LAYOUT OF 66Rl CONNECTNG BLOCK ROW LAYOUT OF 66R2 CONNECTNG BLOCK 66R3 CONNECTNG BLOCK COLUMN A B c E F G H o---o---o o--o---o--o 2 o----o---<> o---o----o--<l 21 o---o o--o o--o o--o '::=-- LAYOUT OF 66R3 CONNECTNG BLOCK Fig. 3-Layout of 66R1, 66R2, and 66R3 Connecting Blocks Page 16 BSP S i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :57:4

17 FACRY FURNSHED WRNG CONN BLOCK NO. 3 SEE NOTE).J-..1-.QJ.Al.._RC _g -t- : m2 1 r4-- o zo POWER - : SUPPLy L..- t : :, : n ioj U-i: " :.. CONN BLOCK NO. (SEE 2 NOTE) SS 6, SECN ,--"-'T'-'''r-r--T--1 r---l :, :,. : " : 1 " CONN BLOCK L t, - ;D D U D illl DJ: L--- L NON-DEDCATED L w j l = J3 NOTE: = = = = = = = = = = = = = = = = = J2 J_ Pc6NEAR or APPARATus CABNET. l L Fig Type Key Service Unit, General Wiring Plan assembly) or one 8-inch 4-series KTU. The 69F apparatus mounting must be ordered separately and installed in the field. (n) Unit is 17-3/8 inches wide by 17 inches high by 11 inches deep. C. 514-Type Key Service Unit (o) For use with the 513-type KSU to provide for growth and/ or expansion of features by furnishing additional mounting and connecting facilities (Fig. 1 and 2). Page 17 BSP S i jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :57:26

18 SECN TABLE E FUSNG FOR 513-, 514-, AND 515-TYPE KSUs DESGNAN FUSE AMP CRCUT POTENTAL CODE Fl F2 5 Lamp lov AC 24F F3.5 MB, MG, ST lov AC or 24V DC 24E F4 F5 Lamp Wink F6 F7 FS Lamp Flash F9 FlO 2 Fll Lamp Wink lov AC 24C F12 F13 F14 Lamp Steady F15 (p) Furnished with hardware for joining the 514Al KSU to the 513-type KSU. (q) Dedicated leads for battery and ground, interrupter, lamp flash, lamp steady, lamp wink, and ringing are wired to the same numbered contacts on each connector (J11-J18). These leads terminate on connecting block 3 (Fig. 6). (r) Nondedicated leads are terminated on connecting block 4 (Fig. 6) for connection of station and/or distribution cable. Some nondedicated leads, in addition to being terminated on the connecting block, are brought out in cable tails for termination on block 1 or 2 of the 513-type KSU, when required. Others are cable leads only, for termination on block 1 or 2 as required. (Do not cut leads. nsulate and store as required.) (s) Space is provided for a 69E (Fig. 7) apparatus mounting to allow for adding one 8-inch or, with the addition of an (P-4V59) guide assembly, two 4-inch KTU printed wiring boards (4-series KTUs). The 69E apparatus mounting must be ordered separately and installed in the field. (t) Unit is 8-3/16 inches wide by 16-11/16 inches high by 1-11/16 inches deep. D. 515-Type Key Service Unit (u) A mechanically joined and partially interwired combination of 513-type and 514Al KSUs (Fig. 1 and 2). (v) ntended for use where the initial installation requirement exceeds the service provided by a 513-type KSU. (w) Unit is inches wide by 17 inches high by 11 inches deep. Page 18 BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :57:49

19 SS 6, SECN As shown in Table D, several connectors (jacks) offer limited service to 4- and 8-pin KTUs. The following procedure will simplify installation while allowing for additional features in the future. 3.4 Using Table D, select KTUs to be installed for the desired service features and list in the order they appear from top to bottom of table. 3.5 Assign selected KTUs to connectors in the numerical preference given in the table. Examples: (a) An installation in a 513A KSU requires five CO line circuits and a 19-code rotary dial intercom with one intercom station requiring a long-line circuit. KTUs are selected and listed in the following manner: (1) 424B (MD) or C KTU (19-code dial intercom) (2) 42A KTU (dial intercom long line circuit) (3) Five 4-type KTUs (CO/PBX line units). Fig. 5-69F Apparatus Mounting 3. NSTALLAN PLANNNG 3.1 Select a wall location for mounting that will allow at least 9-1/2 inches of wall space beyond each side of the backboard to provide for full opening of the carrier assemblies. The same amount of space for the carrier assemblies is required if the KSU is floor-mounted using a 77-type apparatus mounting. 3.2 Customer must provide a llov ac outlet not under control of a wall switch and separately fused for 2 amperes, if possible. 3.3 When a 513-type KSU is installed, allow at least 17-3/4 inches of space on the right side to provide room to add a 514-type KSU, should it ever be needed. The 424B (MD) or C is assigned its first (only) choice of connectors, J-1 and J-2. The 42A is assigned its first choice of connectors, J-6. The 4-type KTUs are assigned the remaining connectors in numerical preference: first choice being J-3; second, J-4; third, J-5; fourth, J-7; and fifth, J-8. (f additional KTU services were to be added, they would require the addition of a 514A1 KSU.) (b) An initial installation in a 515A KSU requires four CO line circuits and a UCH-NE, 1-code dial intercom. KTUs are selected and listed in the following manner: (1) 47B (MD) or C KTU (1-code dial intercom) (2) 426A KTU and 427B (Series 4) or 427C KTU (UCH-NE adapter) (3) Four 4-type KTUs (CO/PBX line units). The 47B (MD) or C is assigned its first (only) choice of connectors, J-1 and J-2. The 426A is assigned connectors J-11 and J-12, and the 427B is assigned connectors J-13 and J-14. The 4-type KTUs are assigned in numerical preference from Page 19 BSP iOG jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock. Colorado Oct 14, :58:11

20 SECN BLOCK CONN NO, 4 CONN CABLE BLOCK TYPE N.3 KSU N 513- CABLE CONN BLOCK 513-TYPE N.2 KSU N AS REQU R NON OEOCAHD LEADS LrfTo :!..!_1_ , - - J , 3---l f---- _ J 14 - r - 1- l J c!.!.e l S ----, J 1s 1 -!..!21 1 ozo J 1a ,...---!!1-- r! L._._ ozo - -, L j._ 1--- L : L----- DEDCAT LEADS 1 L! FACRY FURNSHED WRNG Fig Type Key Service Unit, General Wiring Plan the remaining jacks: first choice being J-3; second, J-4; third, J-5; and fourth, J-6 (if a fifth line [4-type KTU] were to be added, it would be assigned the next available connector, J-15, etc). 3.6 f 69-type apparatus mountings are to be used, externally mounted 66-type connecting blocks must be provided to accommodate the connections. 3.7 Refer to the following sections for additional information required to plan the installation of a key service unit Centralized Key Telephone nstallations Grounding and Special Protection Requirements, Key Telephone Systems Page 2 BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :58:3

21 SS 6, SECN Remove the cover. 3.1 Mount the KSU on the wall at the selected location, using the provided template and appropriate fasteners or mount on 77-type apparatus mounting following instructions furnished with the apparatus mounting Unlatch and open the carrier assemblies f an external power supply is used, connect it using the power cord furnished with the 513A1 KSU. See Table F for connections Connect the circuit ground to an approved ground f the available 11-volt ac outlet is not a 3-wire grounded type, an adapter must be provided and a frame ground should be installed as follows: (1) Prepare a separate ground wire by attaching a lug (supplied) to a No. 14 gauge wire of sufficient length to reach from the KSU to an approved local ground (should be same as protector and electric ground). (2) Attach the ground wire at the KSU by placing the lug under one of the power unit mounting screws. Tighten the screw securely. Fig. 7-69E Apparatus Mounting Power Unit Selection, Key Telephone Systems Key Telephone Units, Line Services Key Telephone Units, Auxiliary Line Services Key Telephone Units, ntercom Services Key Telephone Units, Control NSTALLNG Services. 3.8 Use care when unpacking to prevent unit from falling out of the cover nstall 69E or F apparatus mounting, and 1A1 matrix block, or 66R3 connecting block (Fig. 2) if they are required Terminate the telephone set cabling, CO, Centrex, or PBX pairs, option straps, and interblock connections on the connecting blocks f a 514A1 KSU is being added to a 513-type KSU: (1) Attach the two (P-4V65) straps to the back of the 513-type KSU, using four of the eight (P-21371) screws provided. Do not tighten the screws. (2) Slide the 514A1 KSU over the protruding ends of the straps and butt the two units together: 513-type KSU on the left and the 514A1 KSU on the right. Page 21 BSP S i l.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :58:48

22 SECN (3) Secure the straps to the 514A1 KSU with the other four (P-21371) screws. (4) Tighten the eight screws. (5) Fasten the 514A1 KSU to the wall or apparatus mounting. Mounting must be expanded to proper width. (6) Make required connections to connecting blocks in 513 KSU. See Table G for connections Close and latch carrier assembly nstall the KSUs by inserting the plug-end of the boards into the selected connectors. Make certain all option straps are in place on KTUs as shown in associated connection figure. Exercise care when handlin g and inserting plug-in KTUs to avoid damage to the printed wiring and other components. 3.2 Plug power cord into 11-volt ac outlet provided Test operation of KSU for services provided Replace and secure cover. f a 514A1 KSU is being added, attach and secure the 129A cover (furnished with the 514A1 KSU) and return the 128A cover (furnished with the 513A1 KSU) to stock. 4. CONNECNS 4.1 Connections for 513-, 514-, and 515-type KSUs are shown in Tables F through and Fig. 8 through 73. See Table of Contents for connection tables and figures. 5. MANTENANCE 5.1 Maintenance of a 1A2 KTS is limited to normal station repairs and wiring checks of the mounting facility and terminal field. No field maintenance is to be performed on the plug-in KTUs. 5.2 Care must be used when removing and inserting plug-in KTUs into the connectors to avoid damage to the printed wiring and other components. TABLE F CONNECNS REQURED FOR CONNECTNG AN EXTERNAL POWER SUPPLY A 513- OR 515-TYPE KSU USNG FURNSHED POWER CORD POWER LEAD LEAD W RE SUPPLY DESG COLOR GAUGE lov GRD or GRD CONN ON CONN BLK 3 MG R- 24 1C* 15V 15V GRD GRD BL-BK 22 llc* or GRD or RG GRD B(l) W-G 12D* SG GRD GRD B(2) R-G 13B* 24 TALK GRD A( 1) W-BL 14B* GRD GRD A( 2) W- 158* 18V GRD 18V GRD 8-BK 22 16A* 1V GRD LG1 W-BR 17C* 18 or GRD LG2 W-S 19C* 1V AC or 1V AC MB -R 24 1Gt NTER. 15V 3 Hz ±15V BL-R 22 llgt BAT B( l) G-W 12Gt BSG BAT B( 2 ) G-R 13Gt 24 BAT A(l) BL-W 14Gt A TALK BAT A( 2) -W 15Gt f- - 18V AC ±18V S-R 22 16Ht 1V AC ±1V(1) BR 17Gt lov AC 18 or 1V AC ±1V(2) s 19Gt NTER. * Terminates on left side of connecting block. t Terminates on right side of connecting block. 5.3 When trouble is encountered, proceed as follows: (a) Determine if trouble is at individual station or common to the system. - Page 22 BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :59:7

23 SS 6, SECN TABLE G CONNECNS REQURED FOR ADD NG 514-TYPE KSU A 513-TYPE KSU LEAD LEAD BNDER DESG COLOR COLOR CONN ON CONN BLK 3 LF2 S-R G* 3C LS2 W-G G* 4C RN BR-R G* 9B MG G-R G* lob GRD B( l) R- G* 12C GRD A( l) R- BL G* 14C LW2 R-S Gt 3F ST R-G Gt 9G ±15V R-BR Gt llf BAT B( l) -R Gt 12F BAT A(l) BL-R Gt 14F LF4 S-R Y * 7C LS4 W-G Y * sc GRD B( 2) R- Y * 13C GRD A(2) R-BL Y * 15C LW4 R-S Yt 7F BAT B( 2) -R Yt 13F BAT A(2) BL-R Yt 15F LF3 S-R R* 5C LS3 W-G R* 6C LW3 R-S Rt 5F LFl S-R * lc LSl W-G * 2C LWl R-S Ot lf RG G t llb Al w :j: 13 LG2 BL :j: 2F LGl t 2G LG4 s t 6F LG3 BR :j: 6G * Terminates on left side of connecting block. t Terminates on right side of connecting block. t Stored together in one bundle. (b) f common to the system: (1) Check power supply and fuses. (2) From nature of trouble report, determine which KTU is causing trouble. (3) Replace KTU with one known to be working properly to determine whether trouble is in KTU or external to it (be sure to strap in the correct options on replacement KTU, as applicable). (c) f replacement of the KTU does not clear trouble, the trouble is external to the KTU and the complete wiring serving the KTU should be checked. Place original KTU back in service. 5.4 When a KTU or a connector is taken out of service or replaced by another, all nondedicated wiring for the connector or KTU should be removed to avoid damage to a different type KTU should it be inadvertently plugged into the connector. Factory Wiring 5.5 Factory-furnished wiring for lamp, battery and signaling circuits are shown in the following figures: Fig. 74-ATl and BTl Circuits Fig. 75-Bat. A (1) and Bat. A (2) Circuits Fig. 76-Bat. B (1) and Bat. B (2) Circuits Fig. 77-MB, MG, and ST Circuits Fig. 78-Lamp Steady Circuits Fig. 79-Lamp Flash Circuits Fig. 8-Lamp Wink Circuits Fig. 81-±1 Volt, ±18 Volt, ±15 Volt, and RN Audible Signaling Circuits 5.6 Factory wmng for connectors J-1 through J-8 and J-11 through J-18 is shown in numerical order in Fig. 82 through 97. Page 23 BSP iOG jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :59:27

24 SECN TABLE H CONNECNS FOR AUDBLE SGNALNG CRCUTS AUDBLE CONNECTNG BLOCK 3 SGNALNG CRCUT* PLACE STRAPS REMOVE LEADS ±1V 17D to lld Buzzer 17E to lle ±18V 16D to lld Buzzer 16E to lle From Terminals llc and llg (nsulate and Store) ±15V Ringer Factory Provided *f ±1V or ±18V is used for audible signaling: KTUs requiring ±15V private line services cannot be used in the 513 KSU. ±15V can be supplied to KTUs in the 514 KSU by moving the (R-BR) lead on terminal llf of connecting block 3 to a spare ±15V terminal. Page 24 BSP S i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :59:45

25 TABLE OPN CONNECNS FOR LAMP CRCUTS LAMP FLASH LAMP STEADY LAMP WNK ON CONNECTNG BLOCK 3 PLACE REMOVE PLACE REMOVE PLACE REMOVE LAMP STRAPS STRAPS STRAPS STRAPS STRAPS STRAPS OPN NTERRUPTER LOAD... z y X w KS ,L1 ±1V Motor lb to 5B 2B to 6B 1G to 5G 1 to 1 3B to 7B 4B to SB 3G to 7G KS-19385,L2 Lamps 18D to 19D 18D to 19D 18D to 19D 24V DC Motor KS-159,L1 ±lov Motor 11 to 1B to 5B 2B to 6B 1G to 5G 2 3B to 7B 4B to SB 3G to 7G KS-19384,L2 Lamps 18D to 19D 18D to 19D 18D to 19D 24V DC Motor * f Z, Y straps are in place. CD... a (Q.,... iii _o-- m n.. z BSP iOG 'pg Scanned by Frank Harrell, (Cowbo Frank) Castle Rock, Colorado Oct 14, ::4

26 SECN TEL SET T (CO) R (CO) RG RC A A LG (NOTE 3) OPN STRAPPNG ON 4-TYPE KTU OPN BLOCK (NOTE ) reatures OPN STRAP TERMNALS 4A, B 4 AND C NTERRUPTEO RNG AUO BLE STEADY RNG T SGNALS COMMON WTH 1 MATR X CONTROL s SHORT TME DELAY ( SECONDS ) VSUAL LAMP ll NK y HOLD LAMP STEADY X Z (NOTES TME-OUT UNO 5) CONTROL 2 2 LONG TME DELAY (NOTE 6) (NOTE 6) DELAYED HOLD RELEASE RELEASE or 5 MLL SECONDS \/HEN ASSOC ATED \lith NO. ESS HAVNG RES\ TCH CAPABLTY * (USE 5 ur CAPAC R, SO A OR EQU VALENT ). t(use 1.62 Ur HOLD NG BR DGE CAPAC R, 71G OR EQU VALENT ) rrom CO OR PBX BY ll NE CURRENT 5 MLLSECONDS WHEN OPENS GREATER ASSOC ATED \lith NO. 5 X-BAR THAN CENTREX HAVNG AUT<Jt4AT C PERMANENT SGNAL RELEASE zc (NOTE 7) 2 l zo * (USE.5 ur CAPAC R, 5756 (NOTE 8 2 l OR EQUVALENT ) t (USE.162 Ur CAPAC R OR EQU VALENT ) * WHEN USED ll TH Z OPT ON t WHEN USED \ TH LONG TME DELAY Fig. 8-.Connections for 4A, B, C, or D KTU (CO/PBX Line Circuit) (Sheet 1 of 2). Page 26 BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Roc_ k._, C ;; o:;; l;; o :,:: ra :;: d ;; o...;: O :;: ct :.ḷ;:; 4 ;;:,..: 2 :::..: 1.:. 2 -" :.; 14 :.. : :;; 2 ;,; :.:;. 2 ;;;.

27 --.!--!. -- SS 6, SECN ! --fi ---;:"i JJ J4 J5 J J2 G 7G JG 19G 25G J G 2G 8G 14G 2G 26G J2G 5G G 17G 2JG 29G J5G 6G 12G 18G 24G JOG J6G A-E 7A-E JA-E 19A-E 25A-E Jl A-E R\1 AND TERMNAL ASS GNMENT ror JACKS CONNECTNG BLOCK 2 J6 J 12 J7 J8 J J7G G G J8G 2G 2G 41G 5G 5G 42G 6G 6G J7A-E A-E A-E J8A-E 2A-E 2A-E 2A-E BA-E 14A-E 2A-E 26A-E J2A-E JA-E 9A-E 15A-E 21A-E 27A-E JJA-E J9A-E JA-E JA-E 4A-E OA-E 16A-E 22A-E 28A-E J4A-E 4A-E 4A-E 4A-E 5A-E A-E 17A-E 2JA-E 29A-E J5A-E 41A-E 5A-E 5A-E 6A- E 1 2A-E 18A-E 24A-E JOA-E J6A-E 42A-E 6A-E 6A-E 4 Jl4 J 16 J 17 J 18 7G JG 19G 25G JG J7G 4JG 8G 14G 2G 26G J2G JBG 44G G 17G 2JG 29G J5G 41G 47G 12G 18G 24G JOG J6G 42G 48G 7A-E JA-E 19A-E 25A-E Jl A-E J7A-E 4JA-E 8A-E 14A-E 2A-E 26A-E J2A- E J8A-E 44A- E J J J 1 5 9A-E 15A-E 2 1 A-E 27A-E JJA-E 1A-E 45A-E --<'1 6 OA-E 16A-E 22A-E 28A-E J4A-E 4A-E 46A- E A-E 17A-E 2JA-E 29A-E J5A-E 41A-E 47A-E 12A-E 18A-E 24A-E JOA-E J6A-E 42A-E 4RA-r _,., s HOWN F OR R EFERENCE NLY -< 4 9 -<' 5: 4- TYPE KTU TEL SET NOTES : CONN BLOCK o---<>--o---<>- <>- T - R 2 - A J ---o A 4 ---o LG 5 - L 6 ---o TYPCAL EXAMPLE: T o! co R J 6 o o b i) RG RC NSTALLER \ RNG J AUD SG. TH 4D KTU S FACRY WRED FOR 1-SECOND TMEOUT, PLUS WNKNG-HOLD LAMP, AND W AND S WRN OPT ONS. 2. DODE MATR X MUST BE FURNSHED LOCALLY. OPT ON MAY BE USED N LOCALLY El«ll NEER OR RELAY CONNO AUD Bl ARRANGEMENTS. 4. PROVDE TM -OUT CYCLES Of' RN-UP CRCU TS FRON 3.4 7,5 SECONDS, REPLACE Z OPT ON STRAP WTH A KS- J49,L OR EQUVALENT ( WATT) RES SR. US ON RES SR LEAD AS A STRAP BET N TERMNALS AND 2 AND CONNECT TH OTHER LEAD TERM NAL 3. USE TABLE BELOW FOR RES SR VALUE REQU RED FOR DES REO TME -OUT NTERVAL. TNE N src EFFECT ON DELAYED FROM 1 SEC RES SR HOLD RELEASE OPT ONS MEGOHM : ZJ zc 1.2 -E.39 J,4.2 NOT R CO4M N (NOT 5) NONE F THE TME-OUT CYCLE S REOUCED N CONJUNCT! ON WTH ZC OR ZJ OPT ON, CONNECT THE RESSR AND CAPAC R AS SHOWN BELOW: J SOLDER / : TERMNALS ON KTU OPN BLOCK " 5, WHEN Z OPT ON S PROV OED WTH ZC OR ZJ OPT ONS, REMOVE THE Z STRAP AND USE THE CAPAC R LEAD AS A STRAP BETWEEN TERMNALS AND FOR JO SECOND TME-OUT CYCLE, REMOVE Z OPN STRAP BETWEEN TERM NALS AND 2. 7, WHEN THE ZC OPT ON S USED DUE THE DELAYED RELEASE Of' THE HOLD NG BR DGE, SON TRANSMSSON LOSS S ENCOUNTERED FOR APPROX MATELY SECOND WHEN A STAT ON REENTERS A HELD CALL. 8. ZD OPT ON S REPLACED BY ZJ OPN, HOWEVER T S NOT NECESSARY UPOAT CRCU TS PREVOUSLY MOD FED W TH OPT ON ZD. Fig. 8-tConnections for 4A, 8, C, or KTU {CO/PBX Line Circuit) {Sheet 2 of 2). Page 27 BSP S i jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, ::41

28 SECN ROW Af«l TER!NAL ASS!Gtn:NT FOR JACKS co 'NE Cl!ON BLOCK 1 4 J JS JG 7 J CO OR 1 13G G 7G 13G 1 2 G 31G 37G PBX RCO 2G BG 14G 2 26(L 32G 3 G 2G 2G BG G 3BG LNE 5G 11G 17G 23G 29G 35G 41G 5G SG 11G 17G 23G 29G 35G 41G..!!g. 6G 12G 1BG 24G 3 36G 42G GG GG 12G 1BG 24G 3 36G 42G T 1A-E 7A-E 13A-E 19A-E 25A-E 1A E 37A-E 1A-E 1A-E R 7A-E 13A-E 19A-E 25A-E 1A-E 7A-E 2A E BA-E 14A-E 2A-E A E 2A-E 3BA-E 2A-E 2A-E BA-E 14A-E OA-E 26A-E 2A-E 8A-E A TEL SET 3A-E 9A-E 15A-E 21A-E 7A-E 3A-E 39A-E 3A-E 3A-E 9A-E 15A-E 1A-E 27A-E 3A-E 9A-E 1 4A-E 1A-E 16A-E 22A-E 28A-E 4A-E 4A-E 4A-E 4A-E 1A-E 16A E 2A-E 28A-E 4A E OA-E LG SA-E 11A-E 17A-E 23A-E A-E SA-E 41A-E SA-E SA-E 11A-E 17A E 3A-E 29A E SA-E 1A-E LA'!r l GA-E 12A-E 18A-E 24A-E A-E A-E 42A-E SA-E SA-E 12A-E 18A-E 4A-E 3A-E 36A-E 2A-E LNET SWTCH PCKUP _.r < L!J..;L'F T[CO KEY B OR B1,_ AUO SG. R OR R1 (NOTE 1) OOOE/ MTRX J.. NOTE 1, OOOE M TRX MT BE FUlNSHEO LOCALLY. J1B 43G 44G 47G 4BG 3A-E 4A E SA E GA-E 7A-E SA-E SHON F OR REFERENC E ONLY 14 -la :2 _) (a, P VEW OF THE OPN BLOCK HA«llE WARD USER. OPN SYPOLS SHON CONNECTED TER!NALS NDCATE FACRY PROVDED OPNS. CONN BLOCK u F!G;J. B C O E c a c 1 o--o r R1 T ) ;2 o o o o co Dh r LEO R T W Z X C1 B A1 TEL Ai1 SET i:g1 * o o o RG) OPN PLUG SRAGE POSN FOR USE WHEN AUO ASSOCATED OPN S NOT REQURED). T1! SG,... OPNS TYPCAL EXA'LE NSTALLER WRNG OPT FEATUlES THE STATUS OF THE CONNECT ;:;;R;M ' RELAYS FOR All 2 SECONDS FUNCNS OF THE KTU FACRY OPN OPN PLUG f-- TEOUT SHORT T DELAY ARE AS FOLLOWS, PROVDED z TERNALS (APPROXMTELY 5 SECONDS ) z B2 B3 y A1 - A2, r+ VSUAL LA' WN< NC ANS HOLD CKT LA' STEADY RNG OR HOLD X A2 - A3 w NTERRUPTED RNG CYCLE!NT T C3 - C4 AUDBLE STEADY RNG CALL w C2 - C3,/ SGNAL s A R R v C1 - C3 B R R E2 - E3 1--v l c R R DELAYED U1 l o R HOLD R RELEASED f-- RELEASE OPERATE NS FOLLOWS RNGNG 4- TYP E KT u Fig. 9-tConnections for 4G KTU (CO/PBX Line Circuit}41 Page 28 BSP S i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :1:

29 KEY TEL SET SWTCH n NET. L PCKUP rs : LAMP OHOLOO KEY ( T R A A LG L SPARE SPARE 2 SPARE 3 Jl J2 J3 A-E 7A-E 13A-E 2A-E 8A-E 14A-E 3A-E 9A-E 15A-E 4A-E OA-E 16A-E 5A-E A-E 17A-E 6A- E 12A-E 18A-E G 7G 13G 2G 8G 14G 6G 12G 18G J4 19A-E 2A-E 21A-E 22A-E 23A-E 24A-E 19G 2G 24G ROW AND TERMNAL ASSGNMENTS FOR JACKS CONNECTNG BLOCK 2 J J6 J7 JB Jll Jl2 25A-E 31A-E 37A-E A-E A-E 7A-E 13A-E 26A-E 32A-E 38A-E 2A-E 2A-E 8A-E 14A-E 27A-E 33A-E 39A-E 3A-E 3A-E 9A-E 15A-E 28A- 34A-E 4A- 4A-E 4A-E OA-E 16A-E 29A-E 3A- 41A-E 5A-E 5A-E A-E 17A-E 3A-E 36A-E 42A-E 6A-E 6A-E 12A-E 18A-E 25G 31G 37G G G 7G 13G 26G 32G 38G 2G 2G BG 14G 3G "36G 42G 6G 6G 12G 18G Jl3 SHO WN FOR 4 REF ERENCE Jl4 Jl Jl6 Jl7 JB ONL y 19A-E 25A-E 31A-E 37A-E 43A-E 12 2A-E 26A-E 32A-E 38A-E 44A-E 21A-E 27A-E 33A- 39A-E 4A-E 22A-E 28A-E 34A-E 4A-E 46A- 23A-E 29A-E 3A-E 41A-E 47A-E 41A 24A-E 3A-E 36A-E 42A-E 48A-E 8 KTU 1 9G 25G 31G 37G 43G 2G 26G 32G 38G 44G 9 24G 3G 36G 42G 48G f--< , ; : j CONNECT AS REQURED CONN BLOCK TEL SET 6.-::- "-S :..: P A ::; R c:: E c.:c.._.. l _ o- SPARE 2 6,-..,. C>" _.::.==::.. J:...g o 6r--:cC>-_.::.S;_;PA-"R:..:E:...3: < < 9 PART OF 41A KTU 5J A TYPCAL EXAMPLE : NSTALLER WRNG Fig. 1-Connections for 41 A KTU (Manual ntercom Circuit) iii _o- m n... z :. BSP S i6_ jpg Scanned by Frank Harrell, (Cowboy Frank Castle Rock, Colorado Oct 14, :1:19

30 SECN K[Y Hl SET ROW TERMNAl AND SWTCH PCKUP ASSGHMENT K(Y KEY CONN (SH BLOCK NOTE) 2 L ;;:!: l : : NET 28g! R S TA li SA :- - ; l n n T STA t l JZ :=r [!!_R _j---"sb -1.j_ t., STA 2 G ::: 1 18C 2tc ' ['_ 1 5.j _f.. _ ===j'g8!=+ 1 NOTE' (, SHOWN =- SC 1 - -t CONNECT ONS SHOWN ARE OHL '( FOR THE su. 1 REFERENCE FOR BASte rrnurrs or THE 3 ONLY 476 c KTU, te, RNGNG, ROTARY DAL AND STANS. STEADY LNE SNGLE AND BUSY SPURT LAMPS. '!then ADDNG OPNAL HATURES, STA C=T! H ::Tt 4 ;,. ETC., =- 15 -r. i i CONNECN STA THE 5 18[ T J: 1,_ PROV DNG THE OPNAL FEATURE BENG -. 2' 18r * FACRY FVRNSH[O STRAPS STA 1 j 6-21F (ROW THRU AND ROW 38). - 25C j NOT REQU REO r <4258 KTU 15G -- T i S us o. EXANPLE STA 1 -= 18G L [ or ['_- TA -. j. -1 HL MDJ OR KTU [.' PROVDE THESE CONNECNS BY REFERRNG FGURE OF THE AOOEO. [ '" c--lb_- r----, 1 1 1[ KTU STA S 19A _ t1 47-TYPE J-_,H : ;;:L'" -,_22"A' [' - co,;ljw m o ['- ; <23A KTU STA 9 = : T : _, SET (STA ) t-+j- -i--+ : T+- J-_j 12[ 2ZC u 16[ 1 STRAPS J f\. - 26C ;J NTERRUPTER RN dj ":: 9i 3 39[ 3 ( _8 "" BLOCK CONN <OB ROW TERMNAL AHD ASSGHNEHT fcc c!'c'""a::c : : T.:.:,_,J2,--- B COHN BLOCK 2 [ ± T(l) o o o o o +B2 R(l) 16ooooooq 17oooooooffJ o o o o o o o,!-<e13 J 19 ct.. LG() 2 oooooood) o o o o o o Or-) -LG 22 C{ 1 23 oooooooa,j L(l) -;boflorojl. '-.. '\.../' \...../ 'l 25 o..q o R o A o p-; [ \_.../ '--' '--' 26 o o R or o p. ) \_.../ \.../ \..._/ ') * 27 o R o R o R o p-,; ( '\... J \ / \.../ 28 o< o R o 5\ o p--, '-... '\..._/... L J R(l) 38 o o o o o o B31 ooo o o o CONN BLOC: 2 (CONT) 8(1) ooooooo.--rg 1 3 ex: 31 CY) ill--'' ---jf----< : l====j!i:t==:j A B 1-'--lf----<AJo 3A f----<w R =' oe,_ fl.33<<,!'!c_l..c A32 t---<.--<' AJ< Fig. 11-Connections for 478 (MD) or 47C KTU (Dial ntercom, 1 -Code Selector Circuit) Page 3 BSP iOG jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :1:37

31 T CO OR PBX Jl JZ J3 LNE R G 7G 13G 19G R ZG BG 14G ZOG 6G ZG BG 24G SPARE l CONNECT A-E 7A-E 13A-E 9A-E SPARE SPARE Z AS REQURED ZA-E BA-E 14A-E 211-E SPARE 3 CONNECT AS REQURED SPARE4 3A-E 9A-E 15A-E 21A-E 6A-E 12A-E BA-E 24A-E SPARE SPARE '----J CONN BLOCK A B C ---o o---o--o----o-- SPARE 6 T ] o o o R CO o o o o o b o SPARE 3 3 CONNECT ---o * AS REQURED (SEE NSET! RC SPARE 4 6 b TYPCAL EXAMPLE : NSTALLER WRNG * RNGER, RELAY, ETC, OR AS REQU RED. J4 J5 z5g 26G 3G 25A-E 26A-E 27A-E 3A--E ROW AND TERMNAL ASSGNMENT FOR JACKS CONNECTNG BLOCKS 2 4 J6 J7 JB Jll JZ Jl3 Jl4 Jl5 Jl6 7G 31G 37G G G 13G 19G 25G 31G 32G 3BG ZG ZG BG 14G ZOG 26G 32G 36G 42G 6G 6G ZG BG 24G 3G 36G 31A-E 37A-E A-E A-E 7A-E 13A-E 19A-E 25A-E 31A-E 3211-E 3BA-E 2A-E 2A-E 8A-E 14A-E 2A-E 26A E 32A-E 33A-E 39A-E 3A-E 3A-E 9A-E 15A-E 21A-E 27A--E 33A-E 36A-E 42A-E 6A-E 6A--E 12A-E 18A-E 24A-E 3A-E 36A--E NSET CONN BLOCK PART OF 413A KTU Li±f±f 1 R SPARE..---< 12 6 SPARE 2.---< 13 :2J b R SPARE 3.---< 16 6 SPARE < b OPN STRAPPNG FEATURES ON 413A KTU OPN BLOCK STRAP OPT ON AUO BLE SGNALS jinterrupteo STEADY RNG TERNNALS X 9 1 RNG z 8 1 Jl7 37G 3BG 42G 37A-E 38A-E 39A--E 42A-E SHO WN FOR REF ERENCE ONL y JB 43G 14] 44G b ::> 9 48G k 1-" 43A-Ek " Hf-< 16 48A-Ef-< 8 44Hf--< Fig. 12-Connections for 413A KTU (Auxiliary Ringup Circuit) ;;;!" m n.. i5 z.. Q Ul '" 1. BSP i6_ l.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :1:57

32 .. a co... KEY TEL SET PU SWTCH n f5 R KEY lil.:..:..j AUO SG LAMP \.9 (SEE NOTE) DO MATRX Y T6; r L! E T SMLAR TYPE b Jl J2 J3 DSTANT END G 7G 13G R 2G 8G 14G RG G 4G log 16G 5G 1 G 17G RC 6G 12G 18G CONN rr BLOCK 2 A-E 7A-E 13A-E r. 2A-E 8A-E 14A-E ROR) s 3A-E 9A-E 15A-E SG 4A E loa E 16A E LG 5A-E A-E 17A-E L 6A-E 12A-E BA-E ' >-- 3G 9G 15G J4 J5 J6 19G 25G 31G 2G 26G 32G 21G 27G 33G ROW AND TERMNAL ASSGNMENT FOR JACKS CONNECTNG BLOCKS 34G 22G 28G 23G 29G 35G 24G 3G 36G 9A-E 25A-E 31A-E 2A-E 26A-E 32A-E 21A-E 27A-E 33A E 22A E 2BA-E 34A-E 23A-E 29A-E 35A-E 24A-E 3A-E 36A-E J7 37G 38G 39G 4G 41G 42G 37A-E 38A-E 39A E 4A-E 41A-E 42A-E 2 4 J8 Jll Jl2 Jl3 Jl4 Jl5 Jl6 Jl7 G G 7G 13G 19G 25G 31G 37G 2G 2G 8G 14G 2G 26G 32G 38G 3G 3G 9G SG 21G 27G 33G 39G 4G 4G log 16G 22G 28G 34G 4G SG SG G 17G 23G 29G 35G 41G 6G 6G 12G 18G 24G 3G 36G 42G A-E A-E 7A-E 13A-E 19A-E 25A-E 31A-E 37A-E 2A-E 2A-E SA E 14A E 2A E 26A E 32A-E 3BA-E 3A E 3A E 9A E SA-E 21A-E 27A-E 33A-E 39A-E 4A E 4A E loa-f 16A-E 22A-E 28A-E 34A E 4A E 5A-E 5A-E A-E 17A-E 23A-E 29A-E 35A E 41A E 6A-E 6A-E 12A-E BA-E 24A-E 3A-E 36A E 42A E NOTE: DODE MATRX MUST BE FURNSHED LOCALLY. * SGNAL KEY MAY BE A CONVERTED PCKUP KEY OR ANY EXTERNAL NONLOCK NG KEY. t SPARE A RELAY CONTACT(FOR CONTROL PURPOSES AS DESRED). SHOW N FOR REFE RENCE ONLY H 4 JB 43G 44G 45G 46G H f---<1 47G 48G 43A-E 12 :A t 44A-E 13 45A-E 46A E P 47A-E 48A-E f---< m n... i5 z,i.. CONN BLOCK A 8 c E F(G ( T ---o R 2 ---o TEL SET s 3 ---o J LG 5 ---o 6 J L 6 -"-----<) J T J o R D STANT TE LNE RG CONN BLOCK 2 RG RC J TYPCAL EXAMPLE: NSTALLER WRNG t AU D SG OPT ON STRAPPNG ON 414A KTU OPN BLOCK FEATURES OPT ON STRAP TERMNALS AUDBlE SGNALS UNDER NTERRUPTED RNG 7 8 CONTROL OF STEADY RNG T 6 TME-OUT 7 CRCUT COMMON 1/TH DODE (8 RELAY) MATR X CONTROL s 7 8 UNDER STEADY RNG R CONTROL OF 4 6 R RELAY COMMON 1/TH DODE MATRX CONTROL N SECONDS X 2 TME-OUT 16 SECONDS z 2 3 ll THOUT REMOVE 23 SECONDS X OR Z X OR X STRAPS AUDBLE R NGBACK NE M 9 1 Fig. 13-Connections for 414A KTU (Manual Signaling, Ringdown Private Line Circuit) BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :2:15

33 SMLAR TYPE 2 4 RENCE TE LNE Jl J2 J3 J4 J!5 J6 J7 J8 Jll Jl2 Jl3 Jl4 J!S Jl6 Jl7 JB.:;. 2;';1G:-+--;',;:G-j...; 3G::-- l--:lc;9::: G,-t25;:,G:-f3'i;G::-- +--'3;.;7,';G:-f...; ;:G,-1}--,C G::-- f--:: 7;G-f--'173Gl--:19::: G,-t25G!.._j3=1G;-j--; 3;:7::: G-+-4':'3:':G:--1---( 14 :::::K E v::jl::::!l!! 3 1-1r-! 9 1 A 5 -E!jj l s - j E z! A 1 -E 1z!'! - E l1 3 13!A-E A - E j= 3 1 A 1 - E j= l 3 1 A 1 - r't! 9 1!-!!l!s! - E llz i! A! -r!!lzi'!īe ll A-Eji 3 91 A - E!s! - r---<16 (". Fig. 14-Connections for 415A KTU (Automatic, DC Signaling, Private Line Circuit) ED::..._: N:_:TE::_RU::U:.:_P_:_T::: R_:_::_NG:_t-_:\l:.._ OPN TERMNALS t:.. -t-..: , a.. w w iii > KEY TEL SET }----ROWANOT:=::C-NA:s::o::NT_FORJACKS---- WN SWTCH PCKUP Dlt1NO +}-..., n RG 8G 14G 2G 26G 32G 38G 2G 2G 8G 14G 2G 26G 32G 38G 44G...( i---=====rj=t=g7gtj23gg=t=29g35gt=41gtj=jsgtj5gt=ldi!g=j=ii7gtj23g=i=29g35g=t4gig=t= 7G NET. L 6G 12G 18G 24G 3G 36G 42G 6G 6G 12G 18G 24G 3G 36G 42G 48G.-,-t*H-l-*+tt-----, L,.!. 7A-E 13A-E 19A-E 25A-E 31 A-E 37A-E 7A-E 13A- 19A-E 25A-E 31 37A-E 43A-E---< 12415A L...:..J HOL...:...:.J 2A-E 8A-E 14A-E 2A-E 26A-E 32kE 38A-E 2A-E 2A-E 8A-E 14A-E 2A-E 26AĒ 32A-E 38A-E 44A-E A 4A E OA E 16A-E 22A E 28A-E 34A-E 4A-E 4A-E 4A-E OA-E 16A-E 22A-E 28A- 34A-E 4A-E 46A-E 13 K T U LAMP LG!SA-E A-E 17A-E 23A-E 29A-E 35A-E 41A-E!SA-E 5A-E A-E 17A-E 23A-E 29A-E 35A-E 41A-E 47A-E L 6A-E 12A-E 18A-E 24A-E 3A-E 36A-E 42A-E 6A-E 6A E 12A-E 18A-E 24A-E 3A-E 36A-E 42A-E 48A-E AUO SG , CONN BLOCK r,=====seen=o=t=el::::71ṟl DODE lw B T u L!: =;;:/ ;;;:; ;:;;;;;nc t-. >-- NOTE: J?STANT 6o-;-AU _.!!.5 O O O *-for DODE DLE MATRX LNE MUST TERMNAN BE FURNSHED CONNECT LOCALLY. TE LNE OPN STRAPPNG O TEL A 3 ---o features ON 415A KTU OPN BLK_*----, STRAP KS-1349,ll SER ES WTH 91 A 542f, OHM RESSR 2 Uf CAPAC N R A SET A 4 --<> RG AUDBLE STEADY RNG T 5 6 ACROSS TERMNALS 9.!-fACRY COMPONENTS STRAPPED LOCALLY ON AND KTU. NSTALL. ORDER J TYPCAL SGNALS EXAMPLE: NSTALLER WRNG MATRX CO4MON WTH CONTROL DODE st 4 6 }-- -'V:.:.:_SU:.:A:.:L:.::._ AUDBLE HO:..L:... R D=S:... NGBACK G:::_ N:.._ A:... L='---,-t--y NE --:- M t 2 -j-7 8 _o- > m n -4 z > ;.., BSP i6_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 14, :2:33