Bell 2684 Manual 

Specifications

Brand: Bell
Category: Telephone
Model: 2684 (Manual )
File Type: PDF
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Pages: 27

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BEll SYSTEM PRACTICES

AT&TCo Standard SECTION 529-226-142 Issue 3, September 1978 TELEPHONE SETS 2684- AND 2685-TYPE 1 . GENERAL 1 .01 This section contains identification, installation, connections, and maintenance information for the 2684- and 2685-type telephone sets. These sets are 18- and 30-button, respectively, CALL DIRECTOR® telephone sets which are intended solely for use with specially engineered lines-not for general telephone use. 1 .02 This section is reissued to: • Add 2684AM- and 2685AM-type (modular) telephone sets • Show 2684A- and 2685A-type telephone sets MD • Add 656A, 657 A, and 657B keys • Show 697 A headset adjunct MD • Show 3B speakerphone system MD • Add Comcode numbers Since this reissue covers a general revision, arrows ordinarily used to indicate changes have been omitted. 1 .03 The 2684AM- and 2685AM-type modular telephone sets replace the 2684A-(MD) and 2685A-(MD) type telephone sets, respectively. 2. IDENTIFICATION ORDERING GUIDE 2.01 Order as follows: • Set, Telephone, 2684AM-* (18-button set) • Set, Telephone, 2685AM-* (30-button set) NOTICE Fig. 1 -2685AM 1 Telephone Set Note: Complete telephone set identification for ordering purposes by adding code numbers for key module arrangement from Table B and color desired from Table A (example: 2684AM7-58). (a) Replaceable Common Components: • Blank, Apparatus, 105B (see Table B) • Dial, 35AF3A • Lamp, 51A • 812655595 (P-26E559) Relay Assembly • Ringer, T1A • Set, Hand, G3Y-* (2684A- or 2685A-type) • Set, Hand, G15Y-* (2684AM- or 2685AM-type) • 819040122 (P-90D012) Guard Assembly. (b) Replaceable Specific Components: • Cord, Mounting, D120C-* (2684-type sets) Not for use or disclosure outside the Bell System except under written agreement Printed in U.S.A. Page 1

SECTION 529-226-1 42

DIAL MOUNTING SCREWS RINGER VOLUME CONTROL BUZZER POLARITY GUARD Fig. 2-2685AM1 Telephone Set, Housing Removed • Cord, Mounting, D200F-* (2865-type sets) • Housing (2684A- and 2685A-type sets) Table c • Housing (2684AM and 2865AM-type sets) Table D • Key • Bezel Tables B, E, F, and G • Faceplate • Mat, Paper (c) Replaceable Optional Components: • Buzzer, KS-8109L2 (ac or de) • Buzzer, KS-20419L1 (10 volt ac only) • Loudspeaker, 760A (MD) Page 2 • Unit, Control, 55B (MD)} See Note • Unit, Control, J-53041D (d) Loose Parts Furnished with Set: • Subscriber Instruction Booklet (SIB 2473) • 811218585 (P-12A858) Blocking Ring • 814151290 (P-44El29) Designation Strip • 814451308 (P-44E130) Designation Strip (sets equipped with 617A key) • Paper Mat (gold and silver; see Tables E and F) * Add color code from Table A. Note: The 55B control unit is required with sets for 3B (MD) speakerphone use on two wire circuits. The 55B and J-53041D control unit are required with sets for 3B speakerphone

use on 4-wire circuits.

Connections for 4A speakerphone system must be engineered locally. Refer to SD-69923-01 and Section 512-730-460 for Reference. COLOR 2.02 These CALL DIRECTOR telephone sets are available in standard telephone set colors with coordinated color paper mats. One gold mat and one silver mat is shipped loose with each set {Tables E and F). TABLE A COORDINATED COLOR SCHEME TELEPHONE SET, CORD, PAPER MAT HOUSING, AND HANDSET COORDINATED COLOR COLOR CODE COLOR CODE Black -03 Charcoal -70 Green -51 Lt. Green -71 Red -53 Muted Red -69 Yellow -56 Lt. Yellow -72 White -58 Lt. Gray -73 Lt. Beige -60 Muted Beige -75 Lt. Gray -61 Charcoal -70 Aqua Blue -62 Muted Blue -76 Silver -78 Gold -79 ISS 3, SECTION 529-226-142 • Polarity guard for end-to-end signaling capability • 18- and 30-line capacity • Optional headset adjunct. APPLICATION 2.04 These sets are intended for: • Specially engineered line circuits of 1A1, 1A2, or 6A key telephone systems having 2- or 4-wire capability per SD-69581™01 • Standard 3B (MD) speakerphone for 2-wire line circuits (2684A- and 2685A-type) • 3B speakerphone modified for 4-wire line circuits (2684A- and 2685A-type) 3. INSTAUATION 3.01 Planning: When installing the 2684- or 2685-type telephone set and its optional services, consider the following: • Safety for yourself, customer, and maintenance personnel • Distance between apparatus and associated equipment • Space requirements • General appearance of installation 3.02 Installing the Set: DESIGN FEATURES • Remove housing with faceplate and mat by 2.03 These sets have the following design features: • Removable faceplate and mat • Pushbutton key positions convertible to signaling • 6 transfer line switch • 2- or 4-wire operation loosening two screws at rear of set • Install key units as necessary and make connections of key leads • Stamp key designation strips and install under lamp strip • Assure connections are correct and tight, and reassemble set • Connect plug-ended mounting cord to appropriate connector cable Page 3

TELEPHONE SET CODES AND MODULE ARRANGEMENTS (NOTE)

TELEPHONE SET EQUIPPED WITH SET LEFT 2ND 3RD 4TH 5TH TYPE CODEt MODULE MODULE MODULE MODULE MODULE 1 105B 2 656A 4 657A 617A 6 105B 7 657B 656A 656A 2684A (MD) 9 105B or 10 656A 656A 2684AM 11* 12* 657A 617A 667B 13* 657B (MD) 14 657A 656A 15 657B 59 A 1 105B 2 105B 3 656A 656A 4 657A 617A 5 617A 9 59 A 10 105B 2685A (MD) 11 657B 105B 656A 656A or 12 656A 656A 2685AM 13 105B 14 656A 105B 15 656A 656A 16* 105B 17* 656A 6678 18* 657A 617A (MD) 19 656A 59 A Note: The 656· and 657·type keys are electrically the same as and are interchangeable with the 598· and 599-type keys, refer to Section 512·230·100. Module Identification 59A - Lamp Socket 1058- Apparatus Blank 656A- 6 Pickup Positions 657A- 5 Pickup and 1 Hold Position 6578 - 1 Tumbutton, 4 Pickup, and 1 Hold Positions 617 A- 12 Nonlocking Signal Keys 6678- Speakerphone Transmitter Unit * These codes available in the 2684A· and 2685A·type telephone sets only. t See Table A for color code.

ISS 3, SECTION 529-226-142

TABLE C HOUSING ASSEMBLIES FOR 2684A- AND 2685A-TYPE TELEPHONE SETS HOUSING ASSEMBLY TELEPHONE SET NUMBER COLOR 818430035 (P-84C003) Black 818430514 (P-84C051) Green 818430530 (P-84C053) Red 2684A-Type 818430563 (P-84C056) Yellow 818430589 (P-84C058) White 818430605(P-84C060) Lt. Beige 818430621 (P-84C062) Aqua Blue 818431033 (P-84C103) Black 818431512 (P-84C151) Green 818431538 (P-84C153) Red 2685A-Type 818431561 (P-84C156) Yellow 818431587 (P-84C158) White 818431603 (P-84C160) Lt. Beige 818431629 (P-84C162) Aqua Blue • Remove faceplate and install number card in space provided below dial by removing paper covering adhesive area. (5) Internal connections of the 697 A subset are shown in Section 529-110-407. 3.03 Installing Optional Components: • To install 697 A (MD) headset adjunct: (1) Remove telephone set housing, faceplate, and mat by loosening two screws at rear of set. (2) Place headset adjunct near telephone set assuring that headset jacks and foot switch are convenient to the user. (3) Make necessary connections of D20J mounting cord from adjunct as outlined in Table I. (4) Install set housing, faceplate, and mat. • To install KS-8109L2 buzzer: (1) Remove telephone set housing, faceplate, and mat by loosening two screws at rear of set. (2) Remove two steel screws from the plastic buzzer mounting bracket provided at the dial mounting and install the buzzer using these screws. Buzzer must be insulated from the metal base of the set. (3) Make necessary wiring connections as shown in Fig. 10. (4) Install set housing, faceplate, and mat. Page 5

A KS-20419Ll miniature buzzer (6-10 volt

ac) may be installed at any convenient location within the telephone set. Provide mounting screw as required or secure buzzer using an existing screw. Connect BZ and BZ1 mounting cord leads to (BL) buzzer leads at spare screw terminals or use D-141688 connectors. Refer to appropriate section in Division 501 for detailed 'information on KS-20419Ll buzzer. 4. CONNECTION INDEX No changes in wiring other than those specified in this practice shall be made. Table H-Connections For 667B (MD) Transmitter Table !-Connections For 697 A Subscriber Set, Headset Adjunct Unit Table J -Conversion of Pickup Key to Signaling (Nonlocking) Table K-Connections For 657B key (Turn Key) Fig. 3-657 A Key Fig. 4-657B Key Fig. 5-656A Key Fig. 6-667B (MD) Transmitter Fig. 7-617 A Key Fig. 8-59A Lamp Socket (Use 51A Lamps) Fig. 9-Jack Assembly Connections for 2684AM­ and 2685AM-Type Telephone Set Equipped With Modular Handset and Handset Cord Fig. 10-2684- or 2685-Type Telephone Set, Connections Fig. 11-Cord and Cable Connections Page 6 5. MAINTENANCE 5.01 Maintenance of 2684-and 2685-type telephone sets is limited to cleaning plastic surfaces, lubricating bearing surfaces of line switch, and replacing defective key units or components. (a) Cleaning: • Clean exterior plastic parts using water dampened KS-2423 cloth • Do not use scouring cleansers on colored components as this may damage finish • If cleaning does not result in desired appearance, replace component or entire set. (b) Lubricating: • Lubricate bearing surfaces of line switch assembly with KS-14774Ll lubricant when required. (c) Replacing Components: • Refer to sections covering keys, dials, handsets, cords, etc. for replacement of these components • See Part 2, Ordering Guide, for replacement part numbers • To replace modular key unit: (1) Remove set housing, faceplate, and mat by loosening two screws in rear of set. (2) LQosen screw on each side of key frame and raise frame to gain access to terminal boards. (3) Disconnect spade-tipped leads of key unit to be removed, if required. ( 4) Loosen captive screws securing key module to frame and lift key from frame and connector assembly. (5) Install new key unit by reversing procedure (1) through (4).

ISS 3, SECTION 529-226-1 42

TABLE D HOUSING ASSEMBLIES FOR 2684AM-AND 2685AM-TYPE TELEPHONE SETS HOUSING ASSEMBLY TELEPHONE SET HOUSING COLOR 840715304 Black 840715262 Green 840715312 Red 840715320 Yellow 2684AM-Type 840715270 White 840715288 Lt. Beige 840715296 Lt. Gray 840715338 Aqua Blue 840712327 Black 840712335 Green 840712343 Red 840712350 Yellow 2685AM-Type 840712368 White 840712376 Lt. Beige 840712384 Lt. Gray 840712392 Aqua Blue Page 7

OR SIG KEY

1ST LAMP 2ND PICKUP OR SIG KEY 2ND LAMP :SAD PICKUP OR SIG KEY :SRD LAMP 4TH PICKUP OA SIG KEY 4TH LAMP 5TH PICKUP OR SIG KEY 5TH LAMP HOLD KEY 6TH LAMP CHAINING SWITCH Page 8 657A KEY + ;.. (' t ca:: Ū ' v :• t CCl:: + '! jt t (9::: -'- A ;t t (C!:; ' .X If t ū (g l f ' t I I 1 I :1 I Ů! Fig. 3-657A Key CONN I ; ) ; I ) ; ) I } --.-; ; ; I : ; ; I ) ' 26 2 27 13 3 8 3 28 4 29 14 3 9 5 30 6 :Si ' 15 40 7 I 32 8 > 33 16 I Ŭ I ; T > I ' ; 41 9 = 34 ci 10 ;;: 35 0 17 1- 42 ŭ II -+-< 3 6 I  I 12 37 18 I > I > ) I I ; >  € 43 50 49 48 23 24 25 22 47 I I 19 44 20 I I 45 21 46

OR SIG KEY

1ST LAMP 2ND PICKUP OR SIG KEY 2ND LAMP 3RD PICKUP OR SIG KEY 3RD LAMP 4TH PICKUP OR SIG KEY 4TH LAMP HOLD KEY HOLD KEY LAMP CHAINING SWITCH • Vf żr ; t I If CCI:!" ɂ· v [t t cq x• :--. t CCI:!" f '( i + t (9:: + rt ' cg: r I t :l' ũ l I I! I 11 II II I Fig. 4-6578 Key ISS 3, SECTION 529-226-1 42 CONN I I T ..;. I T I I ) 2 6 2 27 ) I ) 3 38 3 28 4 29 ) ) > ; ) ) ) ' ) ' ) ' ) ) I 4 39 5 30 6 31 I 5 40 7 32 8 33 16 4 1 9 = 34 .,; 10 Ɣ 35 0 17 ... 42 II 36 12 37 18 43 50 49 48 23 24 H 25 22 47 I I ) 19 44 20 45 21 4 6 Page 9

SECTION 529-226-1 42

1ST PICKUP OR SIG KEY 1ST LAMP 2ND PICKUP OR SIG KEY 2ND LAMP 3RO PICKUP OR SIG KEY 3RO LAMP 4TH PICKUP OR SrG KEY 4TH LAMP 5TH PICKUP OR SIG KEY 5TH LAMP 6TH PICKUP OR SIG KEY 6TH LAMP CHAINING SWITCH Page 10 656A KEY .. Ũ It t e.g .. X I. • cct • ;.. 16 t ra • X ,t t Ɠ Cg:: ' ': I+ t cg: • A :• t A! r '! I űl . fig. 5-656A Key CONN ! ' ) ) ) 2 6 2 27 13 j_ _) ' 38 3 ) _I_ ) ) 28 4 29 14 / ) I ) _l _) ) ) I _) I ; ŧ 39 5 30 6 31 15 40 7 32 ; _! __) ) _) ) 8 33 16 41 - 9 - / ) I Ŷ I ) 34 d 10 .... 35 0 ... 17 ŷ ) 42 II I 36 I 12 37 18 43 ...!...( -+-< 50 49 I | 48 23 +-< 24 I ~ 25 22 +-< 47 I ) i ) ) I ) Ɂ _) ' 19 44 20 45 21 4 6

ON LAMP (CI:::!

T TRMTR I V OLUME CONTROL ť Ŧ ¥ Ť ¥ K D p H 6678 TRANSMITTER II - ' II /I I J R /I M F 8 AI* (0-Vl Tl* (Y-BLl Rl * !BL-Y l AG* (0-Yl LK lf (Y-O) TOT81 [ OF TELSET '(SEE TABLE G) IT* (Y-Gl IR * !G-Yl * LEADS ARE SPADE TIPPED AND OF SUFFICIENT LENGTH TO REACH TBI WHEN TRANSMITTER MODULE IS IN THE 5TH K E Y POSITION OF 2685A-TYPE TELEPHONE SET. Fig. 6-6678 (MD) Transmitter c A ISS 3, SECTION 529-226-142 Rl Tl PI s AG Ml ,_ f- 15 AI Fl CONN : ) I I I I I / I " I I I I IT I } I I I I I f I ' I I I I I I I I / ' 13 38 14 15 40 16 41 17 42 37 18 = ..; ;;:: 0 1- Page 1 1

SECTION 529-226-1 42

T8 1Zl OF MTG CORD ::: - Page 12 617A KEY t l__ zL_ 3 l._ 4L_ 5L_ 6 L_ REMOVABLE S I ( STRAP----- MIW CORD OR EOUIV SG Tt__ 8 t__ gt._ toL II l__ 12 L_ CONN ; I I l I I _l _/ I I I I I I I I _/ _l ; ' I I I I ./ ! ţ I I I I _/ ; Fig. 7-617A Key 13 38 14 39 15 40 16 41 17 42 18 43 = d ... 0 1-

ISS 3, SECTION 529-226-142

Iy CONN{ I : 26 I 7y I { Ţ: 2y 3 < 28 8y H: 3 (9:=::; 2 wx - 9 Ŵ - ci 4 (9::::: 2 ;2 u: 0 I- 10y q rs 5 ŵ | :4 II CS==: t uv 6y 5 II 36 12 y z !š Fig. 8-59A Lamp Socket (use 51A Lamps) TEL SET S1SE JACK H4DU CORD G15Y HANDSET (NETWORK) ASSEfiiBLY l1 (R) ( ) (R) G (W) ( ) :!=m L2 (G) ( ) ) st (BK) ( ) (BK) t TERfiiiNAL ON TBI NOTE - REFER TO FIG. 10 FOR COfiiPLETE TELEPHONE SET CONNECTIONS Fig. 9-Jack Assembly Connections for 2684AM- and 2685AM-type Telephone Set Equipped With Modular Handset and Handset Cord (Note) Page 13

(BL)-1 Ş (RI

+- (W-G) 4, / f' ' J,. (BLI-2 (Y-S) (W) ). ..... .... Ƒ .. ) (O-BKHL2 H / f' (W-SI I t- *, .. ,,,, ... ,'.··'''":'"·.ų .·. lit KŬ ·Š ·'M -;J!:i%-"$. :<::: ., (W) ' l 4, I RCO:: t- ũ T ( ;: LJ= : TRMTR ;:f' +r (0-BK)-2 I t--r , (V) lr . I+ • s (G-WI o ' .. ·. ·.· İ.:;· .··.:.: ?:<·«. ,.,, . . ... :..-:;_·.· . ı,,_. .. , ...• ·.''' '.lllf .. -;.·-ɀ· -į IJ:;-:ijĴ - .-, ȿ ·:·.··ĵ:-::. :..:<:-:.·.!· ":. ·-:·-:·····:·::: ==:::: . ' OP n oNs: ® AC BUZZER @ DC BUZZER @ FACTORY WIRING WITHOUT BUZZER * INSULATED AND STORED (BR R) (S-WI li _l,_LA-.1 MA4 lb.: Lź RELAY ASSEMBLY - Fig. 10-2684- or 2685-Type Telephone Set, Connections (Sheet 1 of 2} Page 14 R GN t 1Urt ū In ‚ Ź RR Į / _A. .. r k K Ū ŭŮůŰ:;_-;:űŲ::: : (W) (G) (BKI (W-Sl (0-BKI-1 (Y-SI (W-G) (BL)-1 (V) (BKl -·:-:· v, (G-W) (GI-2 (0)-2 (W-BL) (W) 2 (RI-2 (VI (BR-Vl (O-Wl (G-WI (BR W I (G-R) (0-R) T s 0 H 2

ISS 3, SECTION 529-226-142

PART OF I TBI LEAD DESIGNATION PMBI ·· -n 0 .. ·. (G-Yl '-'"" ŕ· .. ·--=- : Â;;..: :------. :Ã' I I CO-VI J.i.. (BR) % i;zy (W-0) Ȼ----j[ ŖŗŘGř-ŚRśl--Ŝŝ {BL-V) ·;); HL AI A R IY-Sl B OR Bl TB2 r FIG. II SH I (BL-W BINDER) to FIG. II TBI TO (W) ..:..;.;..:...... _-+---tH--tf--t--+--t-+--+-+-Jj_'".u.,o .: '""" 1:"'1 I ' _x 2 3 (BR-BK) FIG. II SH I (BL-W BINDER) (BL-BKl {Gl (BK) (W-Sl {0-BKl-1 (Y-Sl (W-G) IBLl-1 .!:::.:..... --+-Hf-l-+--+-ll-+--+-+--8o;---+-H4-+-4-M-ftJT j ·Ŧ !® pMin¥1 w.rī-ť ll :4>--- ----'56--78-----'--'-9..:...:_ _ _  { ' }®>-x--- ---.. -$-®-z ..:::+;-;. rv7illm::mr·=l+ ..:::...!.. :.___:.___ ..:...cȼ ._._ - _ - _ ....:.Ƚ ==-Ⱦ (G-R) (0-Y) ( Y-0 -1 ( Y - 0)-2 (S-W) FW (V) (S-Yl ez TO SH 2 (BK) ..:.:::.:!...---+--f---+- -+---4/iw.. ·:.Ũ. _....J ¥.J 5 -u--t® iwi KS-8109, L2 B:ZZER@t _··ÄÅmÅaroÅw@ÆWM IY-Sl J FIG. II BZI (O-W BINDER) (G-Wl (G)-2 ..:;:.......:.:.; +--+-- -+---+---....1 ·"'-'ŧ (OPTIONAL) =---(G)-2 n.l'l (V-BL) T TO @! •'"Ŕ (0)-2 ;:;:_3 .:·-+....:..:.....:.: ::..:._ _ _.:_ ÇÈiII (0)-2 (W BL)  !-+--+---+---+----"#$ % ------------+._ &M ' ·(r - )*+-,-. ··ź··•::: Ÿ'"' ·l (W)-2 ..-.17 1:· (Wl-2 (R)-2 (Vl (BR-Vl {0-W) • • {BR-W ) r / (Y-Gl .! (BR-V) ;:_a m RR É?G. II ti'ĭ ...., Ĭ SH I (BR-Y) (G-W) {BR-W) ,---..;..,.;...(:=_ V l __::..:...--';,. l HLG ] 1 't . . (BL-W ÊËÌ -+----------------------t ---&-'--<Í GÎ-ÏWÐ l -ÑÒÓ13ÔEÕe·-+Ö(×Y-_BØRÙ) -ÚRÛT BINDER) & {G-Rl (0-Rl :i (0-R) PART OF •BI 018 I Fig. 10-2684- or 2865-Type Telephone Set, Connections (Sheet 2 of 2) Page 15

R OR Rl

IBR-Yl RR IY Sl 8 OR 81 IS-WI FW IG-R) (0-Yl (Y-Ol - 2 IBR-BKl (BL-BK) Y-0)-1 FIRST MODULE CORD CONNECTIONS I r-----.:.P_:B---...!(.:;:B,:R_-.:,_Yl:._ TO SH 2 ........._(NOTES I AND 2, SH Ə Ɛ · ' PL.UG I CONN 1 CONNECTOR CABLE CONNECTIONS ---"'­ CONNECTOR I AIOOD A 75A LEAD DESIGNATION TEL SYSTEM DI20C APPARATUS D20DF BINDER BINDER CABINrT ȑI Ȓ-----ȓ--j++4-Ȕȕ4-kȖ+-+-BȗȘ(șBȚLț-ȜWȝl--+-Ȟ l 1 -X 2 3B 4 Lȟ-WȠ)-+-C-- .....!ȡ =------+- 26-ȢȣȤ--;---rrt+ȥri-TȦkrtf-t-B-t+IȧWȨ-ȩBȪLȫl--f-Ȭ26),---ii-ȭIWȮ-ȯBȰLfl-f-ȱ---Ȳ--- -ȳ 2 -__,IO::..·-:W:..!l----lf0A-H '--i-f-f-;1;':0:--:;Wf-1---f----1--if-+IWƥ-:"G,l,_--!--!t-----'LƦG------+- 3 :Ç: 4 >-1 --ir--:.::!;;".:.., Ő::: ő:-;\-+-+-- ""'"""Œ=- --- --œ 28 S-Wl I$-W) 29>-1--if-+1 s""--"w:o;J;-:----L-!t-----:F:'cW,...----+- 4 f-lf--""-''-'----+(I)A-H IW•SI Ǝ Ƨƨ===Ʃƪ=ƫ(WƬ-:jsQƭ====ƮƯ===Aư.;fsƱ . Oll Ʋts£1 :::k: 29 IBL·RI 30 IBL-RI L 14 R-BL) 6 )-t---jɈ-f t='R-:.,BɉL:,. l- -Y -- --;'l';:-G- ---t - 3: 10-Rl ɊI pq===ji::::1coh-j‡grs==t=fe::::::::::::::::::::uR;:::::::::::::::: !::: 30 IR-01 32 >-+---t-+'R=-·-:0;;.1--+-+ I ___ T;._ _ __ ĩ 6 ɋ1--"IG- "--"R"-l -----lf-0 A•H G -R B )-t----it---:-1 :':-G·-:R£-il--f-t--:-::Ɍ=-:::---t- 31 IR-G 33)-t---II-ɍ((=RBR--=:Ɏ)R:-;l-f--I--...:. A"'SɏOR:>...:<: SI __ -f- l5 BRɐRI 9 >::==1ɑ:l!d!t::t=I===:¥ L c::=:t: 40 R-BR 34> R- R LG : 7 1::: 10 >-a---l.-i:ɒ :-;..: _; ɓ1ɔ-t-t---ɕ ;----t- 0 32 IBL-BKI IBL-BKI 3ɖ}-+--1--fii=: L..:_':!a='Klɗt-ɥ---'-----+ • I -i--"=='----t(2) A·H II }-+--t-.,;;:;:;;ɘ_...--1.--:-:::-::cə:----1 ɦ 33 BK-Bll i-t736 IBK-BLl - --if-.....:A;;.:,'-=S-',,D:::R.:...:c S:.._-1- ll 16 (0-BKI ȹ -+7l2 O·BK Ī L 0 41 (8K-OI !! ....,-?H>-+--+--1:.;:8;;.:K,.;·O:;.:l-ɚ -+------'l':"G'-----1- h t (G-BKI 13 >-t-ɧ,.._ɛI:,G·,:.B::;:K,;.l-t-C---:;R-----f- 34 Ųr-'I..,8.:R..,:-8::1<:.<1--If0A-H :BK-GI I 38>-t-vi-w:a"'B:x-;,;:: =1:-1 -+ɜ.--....!.T-----f- IO :::::I 14 yz===c{=b18aK:.=`8_|t) =t==Ƴ===Aƴ.Ƶs:;:. OɝR::ɞ s1:::::^: 35 IS-8KI Š 39 IS-BI-t--1-71 :,BKi-_"i$:fi-+-ţ----:'L=.:G-----f- 42 IBL.-YI 40>-t--l,.._-;.l;SI.c--;,;YŤl -+-ƶ--ƷƸR-----f,- ll (Y-8L 16 )4--+ 1-..l:;y_O:B,:.L;,. l -+--lj t---...;,:. T-----t- 36 41 >+---4--!-F-ƹ--+--+------:..__--ƺ- 12 ( 1 110v-vo11 * 0- G 10-Yl 17 >+--+ ,--TIOɠ--o ɡYɢl'---+-1,t---------t- n ( I - * Y-O! 42}-+--il--...;.:. y-=,;,.--+___,t----:-::------1ƻ II ( 1 11!:::11 * IG-Y) ISH--tf-ɣI-=G-:-Y:il'---f-1t-----:HɤL=.:-----t- 43 ( I I8;:VI * =:1 43>+-v}~:-=;-G -=R-:_;::-:1-+-€--..:H;:=L..G‚---ff- ȷO (I IVƼRI * Y-8Rl 19>+-i-ƽI.;Y::,-8:;,11ƾ1-+-Z---="ƿR-----f[ 49 < I IG-YI * A-H (S-vl 44>+-i-ǀ1-=-s;;.:-Y;::I:-:--+-ǁ--=Ǐ:-7 ǂǐ-=-T-=R""I---f[ 48 Ĩ IY-S) 20}-+---il-7.:y.-:s:f--t-Y--;B:-=O;:-R -;8:;-1 --Ţf- H 1 ƒ„r Ŏ * -t-7 :ŏ'>>+- -a--+--'= .... -t-Z-ǃv'-A""c""A-"N"- T ----11- L.i___ A-H 1.-.!...!.. (Y-= Bll * -f-746}+- 22....-r- (V-Ol -t722}+- 47 no R,.,.'-+--+-l..:.:...=_* -t747}..- lt IGl T:::;: -t723}+- 44 ID-V X -t748}+- 20 IV-8ll 5 DŽ24'--'-- 4Dž (V-GI rr- 21 A-H -t749)+- 46 o-vl †2s>+- , ---'-?so>-'- IBL.-v! R J Ldž:11V[-LJ8 LjL[::::AT::::::ljNJNjnjǍǎ====:::::::::::::::::::::: TOSH2 -v A FIRST MOOUL.E Fig. 1 1 --Cord and Cable Connections (Sheet 1 of 5) "' :I! .. ... .. Ⱥ š .X ... ... .... ... .. .. ... " 0 ..

TO SH I

(BR-Y) PB CORD CONNECTIONS SECOND MODULE I 26 10-WJ 2 27 1 3 38 :!1 28 IS W I 4 29 1 4 39 5 30 IG Rl 6 :!II 15 40 7 :!12 IBL-BKJ 8 :!13 16 4 1 9 34 IBR-BKJ 10 35 1 7 42 I I :!16 j ('I' 0 1 1 2 ID-Yl :!17 1 8 4:!1 oo f+-- 49f+- 48f-+-- 23f-t-- 24f+- 25f+- 2Zf-+- 4 7 ƱRI 19 IGI 44 (O...Y 20 (V-81.) 45 IV-G) 21 IG- VJ 4 6 .... lBI.-VI TO SH I IV-BLJ (G•V) [ - TBn - A•H A·H A•H A•H A-H A-H G,.,. R,.-,. T;). IƲ ..., A-H R '--- T A TO FIG.IO ȳ Ui > I I Ħ ħ I 0120C 0200F I BL·WI w -aLl 10-W l If IW·Ol IG·WJ IW-G l IBR·Wl IW-811) IS-WI T IW·Sl 8L·Rl IR-Bll 10-R l R-Ol IG·R I t (R-GJ (8R·R ) IR· BR) IS-R l IR-S) t I BL· BK) (BK-BLI (O·BKI I BK·OI G·BK IB K·GI t I 8R·8J-t- 1:: 47 >+- 23 >-t- 48 >-t- 24 >-t- 49 >-t- 25 >-t- 50 )-L- R T A SECOND MODULE ISS 3, SECTION 529-226-142 CONNECTOR CABLE CONNECTIONS I I I CONNECTOR 2 AIOOD A75A BINDER 1 81.-W) IW-BI. ) IO·Wl IW-0) IG-WJ IW-GJ IBR·W IW 8Rl I S WI IW-Sl I BL-Rl IR - BU lO-R) I R-Dl IG·Rl I R-Gl IBR·Rl I R-8R IS-Rl IR·S IBL-BK i IBK·BL) £ IO·BKl 1 81<-QJ IG-BKI 1 81<-GI I BR·8KI I B K·BRI S-BK (BK·Sl I BL·YJ IY·BLI I (O•Y) (Y•O) : I IG·Y l I Y·GI IBR·YJ (Y-BRl (S-Y) (Y ·SJ I I LEAD OESIGNA TIDN lot TEL SYSTE APPARATU s CABINET R T A ,S,OR Sl L LG R T A,S,OR 51 L LG R T A,S, OR 51 L LG R T A,S,OR 51 L LG R T A ,S,OR Sl I. LG R T A .S.OR Sl L LG P8 SPARE BZ BZI VACANT ., :I ... .... ȵ ., ... ts :1: ... ... ...1 ... ,.. ,.. ... "' 0 ,.. J TO SH 3 Fig. 11-Cord and Cable Connections (Sheet 2 of S) Page 17

SECTION 529-226-1 42

CORD CONNECTIONS THIRD MO OULE 26 2 27 13 38 3 28 4 29 14 39 5 30 6 31 .. 15 0: 40 0 7 ": 32 "' 8 .,; 33 "' 16 ƍ 4 1 ȱ 9 34 10 35 17 42 I I 36 12 37 1 8 4 3 so 4 9 48 23 24 2 5 22 47 1 9 44 20 4 5 21 46 ) o-w ŝ IS-W (G-A (8l-BK) Ş 8R-BK (Y-O (0- Yl t+-- t+-- ft-- t+-- t+-- t+-- ft-- ů1 Gl ID-Vl (V·BL IV·G : IG·V l IBL-Vl 2 - (G-V TO SH [ TBm f-- A -+I A-H A-H A·H A -+I A-H n .G R "" r;:;:: IX .... A-H R '--- A 0120C 0200F (8L-WI (W-BLI 10-Wl * w-o1 G-Wl (W-G ) ( 8R W) W-BR t IS-WI (W-SI IBL-Rl IR-BLI (0-f!) IA-01 (G-Rl t A G) (BA-R) IR-8Rl (S-R I IR-S) t IBL-BKI (BK-BL) 10-BKI BK-Ol IG-81Cl BK-Gl (BR-BK t 8K-8Al IS BKI (8K-Sl BL-Y Y-BL I 10-Yl • (Y-0) IG·Yl Y-Gl 8R-Yl * IY BRI * (S-Yl * (Y•S) II (BR..Y) -'----' * I IBL-Vl V-8L G-V CON N ECTOR CABLE CONNECT I ONS CONNECTOR 3 AIOOO LEAD DESIGNATION A7SA TEL SYSTEM PLUG 3 CONN 3 APPARATUS BINDER BINDER CABINET I BL-W) R IW-BLI T I 26 liS OR Sl l,OA Rl LG,OA Tl R T 2 27 3 28 4 29 A,S,OA Sl l OR PI LG A T I Iȸ :> _;,. 30 6 '" 31 7 32 A,S, OR Sl l,OA I T LG OR lA A T 8 33 l-t? 9 Ȳ-+-? 34 10 35 A.S. ORSI lOR S BK-0 LG OR AG IG-BK) A BK-G) T BR-BK) A ,S OR 51 L OR Ml LG OR M2HSl R T II 36 12 37 1 3 38 14 39 15 40 16 41 A S,SI OR AI l OA Fl Y-G LG ( BR-YI RR ( Y•BR A T (S·Yl SPARE IY-Sl SPARE VACANT 17 42 18 43 19 44 I I g 20 ' ; ,.__ 46 )+-- 22)-t- 47)-t- 23>-t- ŋ 48)+- --h 24 )+-- Ō 49 )+-- [\gt:: A A THIRD MODULE ]TO SH 4 FOR 30-BUTTOH SETS ONLY J LEADS NOT PROVIDED IN 18-BUTTON SETS Fig. 1 1 -Cord and Coble Connections (Sheet 3 of 5) Page 18 ., 2 "' ... ., >-.. "' z 0 ;r Q. ... ..J "' ... >-... " 0 ...

TO SH [

CONNECTOR CABLE CON NECTIONS .--- TBill: r-- A•H A·H A·H A-H A -H A-H GÖ Ƌ R,.,_ TX IX "-" A-M I R '---- A D200F ( BL-W) (W-BLJ (0-W ) * (W 0 ) IG-Wl (W G ) (BR-Wl (W BR l (S-Wl t (W-Sl ( BL-Rl ( R-BL} (0-Rl ( R·Ol (G-R l t lR·G) (BR·R) ( R-BRI (S-R I (R•S ) t ( BL-BKl (BK-BL) (0-BKl ( BK-0 1 IG-BKJ BK-G t ( BR-BKI ( BK BRl IS-BK) ( BK-S} ( SL-Y} (Y-BLJ T (O•Y) (Y-0) (G-Y} (Y-Gl (BR-Y) t t ( Y-BRl t ( S-Y) 't (Y-S) ( BL-V) V-BL (G V ) PLUG 4 CONN 4 BINDER I 26 2 27 3 28 4 29 I I ; 5 30 6 ' 31 7 32 8 33 ȯ--+7 9 c!:-+-7 34 Ȱ-+-7 10 35 II 36 1 2 37 13 38 I I ; 14 39 15 40 16 41 1 7 42 1 8 43 19 44 20 I I ; 45 ( :: 22>t- 47>t- 23 >-t- :p Ŋ5::= +-+: 49>t- -Z 25>t- - 50× R T A FOURTH MODULE ISS 3, SECTION 529-226-142 CONN ECTOR CABLE CONNECTIONS I I CONNECTOR 4 AIOOD BINDER ( BL-W) (W-BLJ l O-W) (W 0) (G W ) (W-G) ( BR·Wl (W- BR) ( S·W ) (W -Sl I BL-Rl ( R BLl (0 Rl IR-01 I lG-Rl ( R -Gl I ( BR·Rl ( R-BR) ( S-RI lR ·Sl (BL-BK - (BK-BLl 3:: I (O·BKl 0: (SK--o) Ȯ (G-BK) ( BK-Gl ( BR-BK) (BK-BRI (S-BKl (BK-S) ( BL-Yl (Y-BL} (0-Yl (Y-O} (G·Yl (Y-G l IBR-Y} ( Y-BR) (S-Yl ( Y - S ) I I LEAD DESIGNATION TEL SYSTE M APPARATU s CABINET R T A ,S , OR Sl L LG R T A,S,OR Sl L LG R T A.S. OR S l L LG R T A ,S, OR $1 L LG R T A,S,OR Sl L LG R T A S , OR Sl L LG PB SPARE BZ BZI VACANT "' ƌ "' .. - "' "' z 0 :r Q. "' ..J "' .. >- "' " 0 .. J TO SH 5 Fig. 11 -Cord and Cable Connections (Sheet 4 of 5) Page 19

SECTION 529-226-1 42

FIFTH MO DULE 26 2 27 13 38 ś 28 4 29 14 39 5 30 6 31 .. 15 ĥ 40 7 .... Ɖ 3: ..; 33 Ȫ 16 ... 4 1 g 9 34 10 35 11 42 I I 36 12 37 18 43 50 49 48 23 24 25 22 47 19 44 20 45 21 46 I O-wl IS·WI (G R) IBL-91<1 (BR - BK (Y-O) 10- Y) # : : # # # : Ź) G ( 0-V) E I IV - 8L (V-G fJ-- IBL-VI H 4 V-8L (G-V) TO S CIRCUIT SYMBOLS! CONNECTOR CABLE CONNECTIONS .--- TBlt D200F (BL-WI IW-BLI A-ti * 10-WI (W-01 IG-WI IW-G I IBR-'111 W•BR !S-WI A-H T" IW-SI ( BL-R) (R-BLI l O-RI IR-0) A-H 1" (G-RI R-GI IBR-RI IR-BRI IS-RI I R-S I (8L-BI< l A-H ƈ I8K-BLI (O-BI<) (BI<-0) IG- 8KI 181<-GI A-ti t IBR BK) BK-BRI IS-8K) IBK-5 1 BL-Y (Y- 8LI A-H * 10-YI ,.. G (Y-O) (G•Y) (Y-GI ll (8R-YI IY·8 RI IS-Yl ll (Y-SI ll (BR-'1) '---* R,.. T:::: IX * "' A-H R '-- T A If INDICATES LEADS ARE SPADE TIPPEO,INSULATEO. AND STORED. t INDICATE5 LEADS ARE DEAD ENDED. • INDICAT[S LEADS ARE SPADE TIPPED,INSU(ATED, AND STORED IN THIRD MODULE OF 18-BUTTON SETS AND DEAD ENDED IN 30-BUTTON SETS. CONNECTOR CABL[ CONNECTIONS CONNECTOR 5 AIOOO LEAD DESIGNATION PLUG 5 CONN 5 TEL SYSTEM APPARATUS BINDER BINIER CABINET I Iȩ I 26 2 27 3 28 4 29 5 30 6 31 ;,. I I BL-WI IW-BLI (O-Wl IW-ol I G-WI (W-Gl IBR-'111 IW-BRI (S-W) (W-S) IBL-R IR-BLI 10-RI IR-0) IG-RI IR-Gl R T ASOR Sl L ORRI LG,OR Tl R T A,S. OR Sl L OR PI LG R T I A,S, OR Sl I 'i--+? h--+7 32 8 33 9 34 10 35 IBR-RI I IR-BRl L,OR IT I LG,OR IR (/) Ɗ ( Ŝ '{ I I ȫ " 36 1 2 37 13 38 14 39 15 40 16 41 17 42 18 43 19 44 { { I I (S-RI I R-S IBL-BK - I8K-BLl ! 10-BKI - BK-0 (G-BK) 8K-GI 8R-8Kl IBK-BR (S-BK) (BK-Sl IBl·Y) I Y-8L) o-Y IY-Ol IG-YI (Y-G) IBR·Yl ( Y- 8R IS-Yl R T A,$, OR Sl LOR S LG OR AG R T A,S OR Sl L OR Ml LG OR M2(-15) R T I A $,$1 OR AI L OR Fl LG RR RT SPARE I T "' .... ., ,.. ., "' z 0 i: "' -' "' .... ,.. ... " 0 .... I I Ȭ ::t . 20 45 21 46 22 47 23 48 24 49 25 50 IY-S) SPARE >-t- I VACANT >-t- I >-t- =E  ʼn >+- >-t- >-t- ň FIFTH WDCXILE NOTES: I. WHEN SIGNALING KEYS OTHER THAN THE 617A ARE PROVIDED, CONNECT THE SPADE-TIPPED LEADS ASSOCIATED WITH THE CONVERTED PICKUP KEYS TO THE SG TERMINAL ON TERMINAL BLOCK 6. IF ADDITIONAL TERMINALS ARE REQUIRED, PROVIDE AN MIW STRAP, OR EQUIVALENT, BETWEEN THE C OR S AND SG TERMINALS ON TERMINAL BLOCK 6. 2. WHEN MORE THAN FIVE PRIVATE AND INTERCOMMUNICATING LINES WITH COMMON SIGNAL KEY ARE REQUIRED PER TELEPHONE SET, AND WHERE THE 617A KEY IS NOT USED, STRAP TOGETHER C TERMINALS OF RESPECTIVE 6-BUTTON KEY UNITS REQUIRING COMMON SIGNALING FEATURE. 3 WITH 656A KEY IN FIRST MODULE CONNECT (Y-O) LEAD TO TB2-3, (S-11) LEAD TO TBI-3, IV-S) LEAD TO TBI-2, THESE SPADE-TIPPED LEADS ARE STORED IN 1St MODULE DISCONNECT, INSULATE, ANO STORE (Ill LEAD CONNECTED TO TBI-2. Fig. 1 1 -Cord and Cable Connections (Sheet 5 of 5) Page 20

ISS 3, SECTION 529-226-142

TABLE E MATS FOR 2684-TYPE TELEPHONE SETS TELEPHONE SET 2684-TVPE MATS CODE COLOR COORDINATED COLOR SILVER GOLD Black 818380701 (P-83H070) Charcoal 1, Green 818380719 (P-83H071 ) Lt. Green 2, Red 818380693 (P-83H069) Muted Red 4, 6, Yellow 818380727 (P-83H072) Lt. Yellow 818380784 818380792 7, (P-83H078) (P-83H079) 9, White 8183807 35 (P-83H073) Lt. Gray 10, Lt. Beige 818380750 (P-83H075) Muted Beige 14, 15 Lt. Gray 818380701 (P-83H070) Charcoal Aqua Blue 818380768 (P-83H076) Muted Blue Black 818381709 (P-83H170) Charcoal Green 818381717 (P-83H171) Lt. Green Red 818381691 (P-83H169) Muted Red 11, Yellow 818381725 (P-83H172) Lt. Yellow 818381782 818381790 12, (P-83H178) (P-83H179) 13 White 8183817 33 (P-83H17 3) Lt. Gray Lt. Beige 818381758 (P-83H175) Muted Beige Lt. Gray 818381709 (P-83H170) Charcoal Aqua Blue 81?381766 (P-83H176 ) Muted Blue Page 2 1

MATS FOR 2685-TYPE TELEPHONE SET

TELEPHONE SET 2685-TYPE MATS CODE COLOR COORDINATED COLOR SILVER GOLD 1 , Black 818480709.(P-84H070) Charcoal 2, Green 3, 818480717 (P-84H071 ) Lt. Green 4, Red 5, 818480691 (P-84H069) Muted Red 9, Yellow 818480725 (P-84H072) Lt. Yellow 818480782 818480790 1 0 , White 8184807 33 (P-84H07 3) Lt. Gray (P-84H078) (P-84H079) 1 1 ' 1 2, Lt. Beige 818480758 (P-84H075) Muted Beige 1 3, Lt. Gray 1 4 , 818480709 (P-84H070) Charcoal 1 5 , 1 9 Aqua Blue 818480766 (P-84H076) Muted Blue Black 818481707 (P-84H170) Charcoal Green 818481715 (P-84H171) Lt. Green Red 818481699 (P-84H169) Muted Red 1 6 , 818481780 818481798 1 7 , Yellow 818481723 (P-84H172) Lt. Yellow 1 8 (P-84H178) (P-84H179) White 8184817 31 (P-84H17 3) Lt. Gray Lt. Beige 8184817 56 (P-84H17 5) Muted Beige Lt. Gray 818481707 (P-84H170) Charcoal Aqua Blue 818481764 (P-84H176) Muted Blue Page 22

2684A AND 2685A-TYPE TELEPHONE SETS FACEPLATES

AND BEZELS FACEPLATE BEZEL TELEPHONE ASSEMBLY FACEPLATE ASSEMBLY SET CODE (NOTE 1) ONLY (NOTE 2) 1 812166056 2 220Al- (P-21F605) 4 22081- 812166064 (P-21F606) 6 7 812166056 220Al- 814455085 2684A 9 (P-21F605) (P-44E508) 10 (Note 2) 11 220C1- 812166072 (P-21F607) 12 22001- 812166080 (P-21F608) 13 220C1- 812166072 (P·21F607) 14 812166098 15 220J1- (P-21F609) 1 2 221Al- 812166858 (P·21F685) 3 4 22181- 812166866 (P·21F686) 5 221El- 812166890 (P-21F689) 9 221F1- 812166908 {P-21F690) 10 2685A 11 812652121 (P·26E212) 12 812166858 221A1- 13 (P·21F685) 14 15 16 812166874 221C1- 17 {P-21F687) 18 22101- 812166882 {P·21F688) 19 221Fl- 812166908 (P·21F690) Note 1: Faceplate assembly consists of faceplate and three paper mats; one color coordinated, one silver, and one gold. 2: Bezel assembly consists of 814455051 (P-44E505) upper beze> 814455069 (P-44E506) lower bezel, 814455077 (P-44E507) bezel retainer, RM-712661 bezel clip, and RM-712662 bezel spring. ISS 3, SECTION 529-226-142 Page 23

CONNECTIONS FOR 6678 (MD) TRANSMITTER

667B Tit TRANSMITTU AG. 10 G-Y 6 Y-G 2 Y-BL - 3 BL-Y 4 f--- Y-0 5 0-V 1 0-Y 19 Note: When 3-type (MD) speakerphone is provided, disconnect, insulate, and store (S-V) and (V-S) key leads from terminals 2 and 6 of TBl. •

WIRE OR l.UD

Line Switch MA4 Relay Dial Set Mtg Cord D20J Mounting Cord of 697 A Subset TABLE I CONNECTIONS FOR 697 A SUBSCRIBER SET HEADSET ADJUNCT UNIT REMOVE FROM COLOR Til NET STORED Til LOCATION G 10 7 v B 0-W 16 18 W-BL 1 1 15 Y-BR¨ • BL-W W-BL 1 0-W 19 G-V 4 V-G 14 BR-W W-BR BR-Y V-BL BL-V 10 Y-BR 7 V-S 15 G-R 1 1 S-V 18 R-G 16 BR-V V-BR V-0 W-S W-0 * From 0-W binder group. ISS 3, SECTION 529-226-142 CONNECT TO INSULATE AND Tl2 NET STORE 12 7 7 9 c 12 B • • • • • Page 25

CONVERSION OF PICKUP KEY TO SIGNAUNG (NONLOCKING}

- NO. Of KEYS NO. Of NO. Of CONVERTED TO PIIVATE KfY LEAD TRMINATIONS SIGNAL KEYS AND KEYS INTEICOflt T..O 0-Y REMAINING 657A 657B 656A liNES WITH SUPl SUPl OIIG ORIG SUPL COM SIG 0-W s-w G..a lt.aiC II..IK KEY KIY UNE PICKUP KET KEY KfY KEYS ONLY ONlY 6 A-H•- A-H* A-H• A-H* A-ll• A-H•· G• 5 1 A-H• A-H• A-H* A-H* A-H• c G* 4 1 2 A-H• A-H* A-H* A-H• c c G* 3 2 1 .3 A-H• A-H• A-H• c c c G* 2 3 2 4 A-H* A-H• c c c c G* 1 4 3 5 A-H* c c c c c G• 6 c c c c c c G* 5 1 2 A-H• A-H• A-H• c c c G* 5 1 3 A-H* A-H* c c c c G* 5 1 4 A-H* c c c c c G* 5 1 5 c c c c c c G* * On tenninal board associated with key. Note 1: To convert a key position from pickup to signaling, remove 811058379 (P-10E837) from plunger at key position to be converted. Note 2: The sixth key of any supplementary key unit may be converted for use as a common signal­ ing key on several private or intercommunicating lines. The signaling is directed to the S or Sl lead of the lines to be signaled. The lAl or 1A2 system automatic cutoff feature cannot be used on a line connected to the common signaling key. - Note 3: Provide an M1W strap or equivalent between the SG and C terminals on TBVI. Page 26

ISS 3, SECTION 529-226-142

FUTURE Cutoff Station on lAl or 1A2 KTS Cutoff Station on 4-Wire Line (Aux Relay Required) Cutoff External Ringer or Buzzer TABLE K CONNECTIONS FOR 6578 KEY (TURN KEY) (INSTALLED- IN FIRST KEY MODUlE POSITION) CONNECTOR CAll£ l.U.DS AT EQUIP CABINET 5TH AND 6TH UNE PICKUP POSfTION I T A R T A 5TH 5TH 5TH 6TH 6TH 6TH IL.-Y G-Il( I K-G IK-IR IL.-Y Y-ll Y..O To Equip To Extension Station 0 To To Equip Aux • • 0 GRD Relay To Key To External 0 Ringer or • • Equip Buzzer SPADE-TIPPED MOUNTING CORD LEADS IN SET Y-ll O.Y Y..O Ƈ TBI G • • • TBI G 0 0 0 Cutoff Ringer To Key (Note 2) TBl Net. • • 0 Equip 0 in Set 12 A Cutoff AC To A c Buzzer DC Key • (Note 2) • t c 0 • in Set Common Equip Cap.! c Monitoring To Mon • • TBI TBI • • • • Equip R T • Insulate and store. t Connect to screw holding buzzer frame to bracket. : Use network capacitor if available or 548A capacitor or equivalent (ordered separately). Notes: 1 Disconnect BR-BK lead from A-H terminal of TBI. 11-81( (Note 1) • TBI G 0 • " ,. 2 Inaulate the BL-Y and Y-BL connector cable conducton of the BL-W binder group at tbe apparatus cabinet wben the BL-Y and Y-BL apade tipped leads in the set are used. Page 27 27 Pages

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