SECTION 512-210-101 BELL SYSTEM PRACTICES Issue 3, October AT&TCo Standard 1975 SEPARATELY MOUNTED KEYS 6017, 6026, AND KS-21254 LEVER TYPES IDENTIFICATION, INSTALLATION, AND CONNECTIONS 1. 6017S GENERAL 6017T (a) l This section is reissued to include information 6017U on KS-21254 type keys. 6017W* 2A Key Telephone Systems 6017Y (b) Connection information consists of a schematic 1A Key Private Line Circuit 6017AA Station Signal - Key Equip­ of the keys involved. For connection to these ment 102A keys, refer to the system in which they are 6017AB used. 6017AC 6017AK 2. 6017ALt IDENTIFICATION l General 6017AM 5A Key Equipment 6017AN (a) Purpose: 5B Key Equipment Data Application - 4-Wire these keys are referred to as lever type and are used to perform general Line- Equipped with 14A t 6017AR I switching functions in station systems. 6017AP (b) 6026A* Ordering Guide: guard-stamped LINE and TEST at front and rear lever positions, respectively. 4A Key Equipment (without hold, may be used with 1A KEY Key Telephone System) PRINCIPLE USE 6017A Station Switching 6017B 2-Line Pickup 4A Key Equipment with Hold 6026B 4-Wire Private Line Termi­ 6026C nation 6026D 4A Key Equipment (without 6017C Station Ringing Key 6017D 4-Wire Private Line Systems hold, may be used with 1A or 6017E 3-Line Pickup 1A1 Key Telephone System) 6017G Switching Key Used in No. 6017H Signal 750A or 755A PBX Control - 2-Wire Line - Station and Control Circuit Line Cutoff in 1A and 1A1 6017J * Manufacture Discontinued. t Contacts must be wired to terminal as required. See Fig. 3. Key Telephone Systems Note: 6017K 5A Key Equipment With 100- furnished with a black handle but are available Type Loudspeaker with red or white handle when specified on 6017L 5B Key Equipment With 100- order. 6017M 6017P } 6017R All 6017- and 6026-type keys are Type Loudspeaker Loudspeaker and Paging Sys- KS-21254,L1§ •Replaces 6017A key, DPDT terns (Bat position) top ON, center 750A or 755A PBX Control OFF, and bottom ON NOTICE Not for use or disclosure outside the Bell System except under written agreement Printed in U.S.A. SSP 512-210-101-i01_1975-10-0l.jpg Scanned by Frank Harrell, {Cowboy Frank) Castle Rock, Colorado Feb 04,2012 16:55:57 Page 1 SECTION 512-210-101 KS-21254,L2§ Replaces 6017B key, DPDT (Bat position) top ON, center NONE, and bottom ON KS-21254,L3§ Replaces 6017C key, DPDT (Bat position) top ON, center NONE, and bottom ON:!: KS-21254,L4 Replaces 6017D, H, J 4PDT (Bat position) top ON, center NONE, and bottom ON P-132718 OR 801327180 (RED) P-140271 OR 801402710 (WHITE) :1: Indicates a momentary or nonlocking position. 1-13/16 IN. Fig. 1-6017-Type Keys § Use only terminals designated 2A, B, C and 4A, B, C. All KS-21254 type keys are available with the covers in the following colors by adding proper color suffix: Black (-03), Green (-51), White (-58), or Light Beige (-60). The base of all keys is a black plastic .• Note: (c) Design Features: 6017-Type Key (Fig. 1) • Consists of a key unit and terminal strip mounted in a black metal housing. • Not equipped with a designation card holder. A 98A designation strip is available but must be ordered separately. Use a P-476882 designation card or make from good grade of paper approximately 9/16 by 5/16 inch. P-237768 OR 802377689 COVER SCREW Fig. 2-6026-Type Keys 6026-Type Key (Fig. 2) • • Consists of a key unit, jacks for a 52- or 53-type head telephone set, and a terminal strip mounted in a black metal housing. This type key is supplied with a designation card holder. Use a E1164 or E1165 (cut to size) designation card. .KS-21254 Key (Fig. 5, 6, 7, or 8) • Consists of a toggle switch, flexible wiring strip with screw terminals for making electrical connections, and molded plastic cover held to base by serrated locking nut at front (Fig. 5) and snap fit at the rear. Page 2 BSP 512-210-101-i01_1975·10..()2.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 04,2012 16:56:18 ISS 3, SECTION 512-210-101 • Electrical cord channel is provided with four teeth-like protrusions which acts as a cord stay to prevent cord from being dislodged (Fig. 6). • Will mount on 77A mounting bracket (ordered separately) so key can be attached to baseplate of telephone set (Fig. 7 and 8). • Key can be fastened to desk, wall, etc. by appropriate screws or fasteners not furnished with key .• (2) Remove four screws securing key to housing. (3) Place guard over lever. (4) Secure guard and key to housing with screws provided with guard. (5) Replace key lever handle. 3. (f) The lOA guard is another type designed to hold a 6017-type key in the operated or nonoperated position. The guard fits over the key lever and is held in either position by the lever handle being tightened against it. The lever handle must be unscrewed to change the lever position and then retightened. The lOA guard is used in special service applications and must be ordered separately. INSTALLATION (a) Locate 6017- or 6026-type key where readily accessible to user and designation strip can be seen. (b) Face of key should be flush with edge of desk or table. Discourage knee well installations because of space limitations and possible accident hazards. (g) •Locate the KS-21254 key where readily accessible by attaching to telephone set using 77A mounting bracket or fasten key to desk, wall, etc. Terminate electrical connections as required. A simplified schematic of the key is shown inside the key cover (Fig. 6).• (c) To limit number of holes in customer's furniture, key and associated equipment may be mounted on a common backboard. Place leads between s crewhead and (d) Keys are furnished for right-hand mounting on desk or table. To mount 6017-type key on left side, remove screws holding key to box and invert key. For 6026-type key, reverse cover and back. (e) A 14A guard (ordered separately) is available to prevent accidental operation of 6017-type keys in special service applications. Mounting screws furnished with guard. To mount 14A guard: (1) Unscrew key lever handle and remove. washer. Do not place leads between flexible wiring strip and washer. For KS-21254, List 1, 2, and 3 keys, us e only terminals 2A, B, C and 4A, B, C. The other terminals a r e not connected for these keys. For List 4 key, all terminals are connected. 4. CONNECTION INDEX Fig. 3-6017-Type Lever Keys, Schematics Fig. 4-6026-Type Lever Keys, Schematics Page 3 SSP S12-210-101-i01_197S·10·03.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado feb 04,2012 16:56:45 SECTION 512-210-101 •0 3 + f-. ��----103 :� :: T ,L t f- •0 6 L-----10 6 6017B KEY ADJUSTED FOR BREAK-BEFORE-MAKE NO. 6017A f.__'_:� -'-�------=: NO. 6017C 6017K ADJUSTED FOR MAKE-BEFORE-BREAK NO. 60178, K .------10 if"o03 1�4 3 __,:� if._ ___ I : �·-------<10 6 T L___ : : /IWI!'-<>----<: : ---. f- tL--�I0 s NO. 6017D 10 10 I I I+ r fJ it I I NO. 6017H NO. 6017G NO. 6017E :t 10 10 9 10 8 :: :: 103 102 101 I I I� t f- :F I I :! t 1 :: 104 :: :: 109 ::� 10 12 10 sQlo Scanned by Frank Harrell. (Cowboy Frank) Castle Rock, Colorado Feb 04,2012 16:57:02 t II I Qlo Fig. 3-6017-Type lever Keys, Schematics (Sheet 1 of 4) BSP 512-210-101-i01_1975-10-Q4.jpg 1 4� f II 3Qlo I 2Qlo NO. 60l7J Page 4 2 II NO. 6017L ISS 3, SECTION 512-210-101 LOCKING NO. -+-+ NONLOCKING KS- 8108 BUZZER FOR 6017T KS-8109 BUZZER FOR 6017U somA �·--�o0 1 f-- N0.6017T,U,WIMD) :: t o0 45 .---o0 L tL--�o0 s NO. NO. 60175 6017P I -----. : I 16 17 18 I+ : : NO. I+ 14 � -+- T ' l tl II 10 Y-1 -+- NONLOCKING IS �I E LOCKING 4 1101 12 13 � ·� 6017R � 17 � 5 :=:TII �\_, --t-+ 10 � _j: It NO. 12 J It I I 6017Y .n. I �I 13 15 JJ I � 15 14 s===:: ir==-: 7 • NO. 6 � 18 6017AK Fig. 3--6017-Type Lever Keys, Schematics (Sheet 2 af 4) Page 5 BSP S12-210-101-i01_1975-10-0S.jpg Scanned by Frank Harrell,(Cowboy Frank) Castle Rock,Colorado Feb 04,2012 16:57:47 SECTION 512-210-101 LOCKING 0 7 I6 II e>-+------J II 15�1 14 � 13� --+NO. 6017AA 9:� 0----J1 e-.--, I1 � 12� +------+ :� 2 I �8 �9 NO. 6017AB � 0---J NO. 6017AC NO. 6017AM NO. 6017AL NO. 6017AN Fig. 3--6017-Type Lever Keys, Schematics (Sheet 3 of 4) Page 6 Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado --+- :� 10 NONLOCKING 70 80 90100 110120 1 0 2 0 30.40 50 60 SSP 512-210-101-i01_197S-10-06.jpg 0+--o----'-, 12 � : 13 0+--<>--T 14 e------J 5�: II LOCKING � NON LOCKING 1 � 18 � 1 � Feb 04,2012 16:58:05 ISS 3, SECTION 512-210-101 LOCKING -+- NONLOCKING KS-8108 BUZZER FOR 6017T KS-8109 BUZZER FOR 6017U NO. 'soi7M 'r --<oQ> I --- 1----- NO. 6017T , U , W (MD) :: lr---:--: t NO. 60175 '-----IQ> 6 NO. 6017P 4 ,..,. r>. 13 15 16 17 18 r>. : : r>. n. 1� )_1 I+ � II l t:I �I I �· T +-t-+ ' I NO. 6017Y I '-----+: --r ·� : r ! :I t � � 14 .,.,. 12 II LOCKING """ 10 � 17 4� """ ·� 1 """ 6 --f-- NONLOCKING ::-=:t � �\; -+- 11 I 1 12 13 E l6 15 14 r=:: :c-=: 7 1____.0 I I 6 18 NO. 6017AK NO. 6017R Fig. 3-6017-Type Lever Keys, Schematics (Sheet 2 af 4) Page 5 BSP S12-210-101-i01_1975-10-07.jpg Scanned by Frank Harrell,(Cowboy Frank) Castle Rock,Colorado Feb 04,2012 16:58:24 SECTION 512-210-101 NO. 6017AA LOCKING +-------+ NONLOCKING 18 ?--1 17� I 6 e-..----J I 1 5 � 1I 14 � 13� -+- LOCKING -t--+ NON LOCKING 10� I I 0+--<>----'-, 12 � : 13 � 14 � -+7 10 � I1 II � 12 0-.---J NO. 6017AB 2� I 0-.--J NO. 6017AC �� 9 0-.--J1 � :�: c::: :� !C::� •03 v' 70 80 90100 110120 1 0 20 30 40 s0 s0 NO, 6017AL �: NO. 6017AM NO. 6017AN Fig. 3--6017-Type Lever Keys, Schematics (Sheet 3 af 4) Page 6 SSP 512-210-101-i01_197S-10-08.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 04,2012 16:58:44 ISS 3, SECTION S12-210-101 � r R4 � Lwv-, '<./ R2 'U 13 14 15 10 II 12 � � ll I �: Lwv-,RI � � � L � t t I l! '<-' t T NO. � 6 � '<J � 1--if : 4 R3 � . R3, R4-510n RS-12on 17 18 0 16 13 � 14 � � Rl, R2-6oon - 15 16 10 II 12 � � � '<-' � � � '<-' R5 6017AP R2 1 � fI I �! f--4 l t: t NO. r -x> 'X) t I I I 17 7'� ,-,. 18 r A ll � • -x.> Rl-13on R2-130n R3-126on R3 6017AR Fig. 3-6017-Type Lever Keys, Schematics (Sheet 4 of 4) Page 7 SSP 512-210-101-i01_1975-10-09.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 04, 2012 16:59:08 SECTION 512-210-101 r � � 0 L • � I 215A JACK 361C � r� LJ HOLD 0 .. 38 VARISTOR c:. 215A JACK � I I I I "" POSITION � �u L I TALK 361C 10 Jr-- t OFF ,.,. :t iL_ � � fr � � '[ �u � I r� LJ 38 VARISTOR 4 0 ,.,. I n. I I ,.,. c:. I 0 "" 6026A 60268 � � t 237A JACK _n, 10 4 I 215A I 0 JACK � n. L------+--�--� 10 "' 38 VARISTOR 60260 6026C Fig. �026-Type lever Keys, Schematics Page 8 BSP 512-210-101-i01_1975-10-10.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 04,2012 16:59:28 2 ISS 3, SECTION 512-210-101 SERRATED LOCKING NUT Fig. 74KS-21254 Type Key Installed With 2500-Type Telephone Set Using 77A Mounting Brackett Fig. ,54KS-21254 Type Keyt COVER (SIMPLIFI ED SCHEMATI C I NSI DE) 77A MOUNTING BRACKET AND SC REWS MOUNTING BRACKET CORD HOLDI NG PROTR U SIONS (4) o\� Fig. 8-.l nterior View of KS-21254, List 4 Key Showing Leads Terminatedt COVER LOCKING NUT Fig. �KS-21254, List 4 Key, Cover Removed and 77A Mounting Brackett Page 9 9 Pages SSP S12-210-101-i01_197S·l0·1l.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 04,2012 16:59:51