REFERENCE 500E/F, 500H, 500L/M, 500P, 500R/S, 500U, 500W, 500Y, 500AD, 501F, 501P, 501U, 5148, AND 5168 TELEPHONE SETS

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1 BELL SYSTEM PACTCES AT&TCo Standard SECTON ssue 2, May 1971 EFEENCE 5E/F, 5H, 5L/M, 5P, 5/S, 5U, 5W, 5Y, 5AD, 51F, 51P, 51U, 5148, AND 5168 TELEPHONE SETS 1 ENEAL 11 This section provides identification, installation, maintenance, and connection information for special purpose 5-type telephone sets 12 This section is reissued to: Add C4B ringer and 516B telephone set Add Tables Band Show 3A handset and 241A amplifier MD and replaced by 3A4 handset and 241B amplifier, respectively eference Section for common installation and maintenance information (31 and 41) Add note to Tables E and regarding inductive noise evise connection diagrams and tables Show housing assembly P-87C1 (514B set) replaced by housing assembly Show 5E/F, 5PL/M, and 51F telephone sets MD Changes or additions in the body of tables are indicated by shaded areas 13 Code numbers such as 5E/F cover both manual and dial versions, respectively, of the same type telephone set to permit converting to either type without changing the code number stamped on the base The letter was added to the code number of some sets at one time to indicate the set was equipped with a retractile handset cord 2 DENTFCATON Purpose 21 The 5- and 51-type telephone sets are single line sets for use in common battery areas, manual or dial Ordering uide 22 All parts of the set enclosed by the housing mount on the metal base The network and line switch are riveted to the base and are not replaceable Table A lists components of these sets 23 These sets are available in all standard colors as indicated in Section Components available in color include the dial or apparatus blank, handset, mounting cord, and housing Components other than the housing must have the code completed by adding the desired color suffix The housing P- number must have the desired color suffix substituted for its last two digits 24 Housing assembly P-87C1 has been replaced by housing assembly efer to Table B for color ordering information Design Features type telephone sets are identical to a similarly coded 5-type set except for the addition of a 3-element, cold-cathode, gas-filled tube, coded 426A The 514B set provides jacks for use with 52- or 53-type headsets (a) 5E/F (MD) and 51F (MDJ: Equipped with P-19A411 plunger switch (Fig 5) to avoid interference with dialing or talking of another customer on a party line With set off hook, only the receiver is bridged on the line as a monitor until the American Telephone and Telegraph Company, 1971 Printed in USA Page 1 evised March 1972 SSP S i ljpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29,212 23:46:58

2 SECTON TABLE A TELEPHONE SET COMPONENT PATS SET CODE (SEE NOTE) DAL APP BLANK COMPONENT NET NE HANDSET MT COD TUBE HOUSN ASSY E-, F-Type* E,F H* L-, M-Type* L,M 9Ct 95C 95C C4Att C4-Type D3BN D4BJ P-8D5 P-8E1 P-8D2 5 P-Type* P -, S-Type*,S 9H:j: C4Att lor 3-95C C4-Type Type DlOP P-8E1 P-8D2 U-Type* U W Y AD 9Ct 9Ct 9H 95C 425E** C4Att C4-Type N1A or T1A 3-Type D4BJ D3BN D2K P-8E3 P-8KOOO P-8E1 P-2F185 F-Type* F P-Type* 5 1 P U-Type* U 9Ct lor C4Att 3- Type D3BN D4BJ 426A P-8D5 P-8E1 P-8E B 9C *MD t eplaces 7C or 7D dial :j: eplaces 7 or 7H dial eplaces 95A or 95B apparatus blank 425E NlA 3-Type C4-Type ** eplaces 425B network H Early models had C2A ringer :j: Early models had C3A ringer NlA ringer included P-87C1 or DlOP (See Table B) D6AA P-88A5 Note: The letter mdicates set S equipped with a retractile handset cord Fig 2-5U or 51 U Telephone Set Fig 1-5F, M, S, or 51 F Telephone Set Page 2 evised March 1972 BSP i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29,212 23:47:21

3 SS 2, SECTON Fig S-5F or 51F Telephone Set, Plunger Switch Fig 3-5W/Y Telephone Set plunger switch is lifted to connect the talking and dialing circuits an asterisk (*) stamped on the base after the code number Equipped with 4-conductor mounting cord Current model sets are not equipped with a terminal strip (Fig 6) Fig 4-5AD Telephone Set (b) 5L/M (MD): Supplied wired for lal or 1A2 key telephone system Can be wired for separate ringer circuit Earlier sets which were converted for lal or 1A2 key telephone system use will have Fig 6--5L/M Telephone Set, nterior View, Current Model (c) 5H (MDJ, P (MD), and 51P (MD): e ncludes E46 dial lamp which lights when the handset is lifted Poge 3 BSP i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :47:51

4 SECTON A 6-8 volt ac or de power source must be provided (d) 5U (MD) and 51U (MD): (e) (f) Equipped with 584C key, a E46 lamp, and a resistor to provide dial-light/night-light feature When key is in ON position, lamp operates at reduced brilliance for night light When handset is lifted off hook, lamp lights at full brilliance A 6-8 volt ac or de power source must be provided 5/S (MD): Factory-wired for speakerphone 5W/Y: Equipped with a KS-19527L1 neon lamp to provide message waiting service (g) 5AD: Factory-wired for use with 4-wire private line circuits and 3-type speakerphone Can be modified for use on 2-wire line such as individual lines or 1A1 and 1A2 key telephone system ndividual or common line ringer Plug-ended mounting cord Expanded line switch with spare transfer and two spare make contacts (h) 514B: Equipped with headset jacks, a 637 A key for headset ON-OFF function (TUN) and flash function (PUSH) for operator recall (2) emove cap (Fig 12) from housing by removing screw and clamp located inside housing assembly, discard cap (3) nstall P-17A123 bracket at location shown in (Fig 13) and attach P-27E389 (bayonet base) or P-13A264 (screw base) lamp socket assembly to bracket arm (4) nstall KS-19527L1 lamp (ordered separately) in bayonet type socket and appropriate lamp for power supply used when screw type socket is installed (5) Make necessary connections in accordance with appropriate connection section (6) nstall P-11E1 lamp cap assembly on housing of set Note: To prevent pilferage of the lamp cap assembly a P-14E582 retainer ring (Fig 1) may be installed Order separately nstall ring by pressing two tabs together and inserting into the lamp cap slots (Fig 11) This prevents normal rotation and removal of the lamp cap (7) eplace housing on set (k) 516B: () Equipped with turnkey which activates an external make-busy circuit and illuminating a lamp on the set as an indication of key operation nitial use with 82A hotel/motel PBX system P-44E42 Jack and Component Assembly (includes 241A amplifier, and N1A ringer) (i) Current models have ringer volume control protruding through base pan n early models control protrudes on side (m) SB-2416 Subscriber nstruction Booklet (shipped loose) (j) Kits of Parts (Optional): The 514B telephone set may be equipped with a neon indicator lamp by using a D Kit of Parts or a filament type lamp using a D Kit of Parts When required install kits as follows: (1) emove housing from set 3 NSTALLATON 31 For installation information on housings, mounting cords, apparatus blanks, and buzzers refer to common installation and maintenance Section Page 4 SSP 52-S _ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :49 :3 --

5 SS 2, SECTON necessary in sets having a C4A (four lead) ringer changes are required when a C4B is used (Fig 17, 18, 2, and 22) (a) Tube Assembly: P-43A6 SCEW Where excessive power induction exists, a 425A, 4-element tube may be substituted for 426A See section on inductive noise Tube assembly is held to base of set with single screw (Fig 7) Fig 7-51-Type Telephone Set, Tube Assembly (a) inger: Mounted to base with two P-43A456 washerhead mounting screws in rubber grommets inger off position can be provided, when authorized locally, by bending back ringer stop spring to provide a fifth position (OFF) on the ringer volume control Note: Current model C4-type ringers are equipped with a handset cord retainer (boss) for use with 5- and 51-type telephone sets (Fig 6) (b) Handsets: The 1- or 3-type handsets in these sets may be replaced by a 6A (MD) or 6B handset for impaired hearing, a 'ta for weak speech, or a SA (MD) or 8B for noisy locations efer to section covering amplifier handsets for additional information 4 MANTENANCE 41 For maintenance information on plungers, bracket switch assemblies and switch contacts, refer to Section , Common nstallation and Maintenance 42 Current models of the 5L/M, 5/S, 5W, and 5Y are equipped with a C4B (two lead) ringer When ringer replacement is Fig 8-Typical Turn Key (b) Dial Light: To remove, turn lamp cap and lamp counterclockwise (Fig 9) and lift out (c) Lamp Cap etainer ing: 5W /Y and 514B telephone sets can be equipped with P-14E582 retainer ring (Fig 1) to prevent pilferage of the lamp cap assembly nstall retainer ring as follows: (1) emove set housing with lamp cap in place (2) Press two tabs of retainer ring together Page 5 BSP i2_1971 S-5jpg Scanned by Frank Harrell,!Cowboy Frank) Castle ock, Colorado Jan 29, :49:39

6 SECTON LAMP CAP ASSEMBLY P-8F9--- (d) 241-Type Amplifier: A defec tive 241-type amplifier will cause loss of or low output from the headset transmitter DO NOT ATTEMPT FELD EPASONTHE241-TYPEAMPLFE f amplifier is defective, replace *ADD COLO SUFFX P-87C6-* EMOVABLE CAP (FO MESSAE WATN O VSUAL SNAL LAMP) 637A KEY Fig 9-Lamp Assembly, 5H/P Telephone Set (3) nsert retainer ring into lamp cap so that retainer ring engaging pins fit into lamp cap slots (Fig 11) TPA Fig Telephone Set (4) This prevents normal rotat ion and removal of the lamp cap ttable U HOUSN ASSEMBLY FO 5148 TELEPHONE SET COLO PAT NO Fig 1-P-14E582 etainer ing Black vory Moss reen ed Yellow White ose Pink Light Beige Light ray Aqua Blue Turquoise 842,5645 Fig 11-etainer ing Mounted in Set Housing Page 6 BSP i2_1971-QS-6jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29,212 23:5:

7 SS 2, SECTON Fig Telephone Set Fig Telephone Set, nterior View TABLE C LNE AND NE CONNECTONS FO SOOE/F, 51 F, AND SOOH TELEPHONE SETS WE O LEAD COLO BDED N PATY TP PATY NO DENT D inger (Note) BK s S- L2 K A L2 K A 426A Tube (51F and 5H) BK y Mtg Cord Conn Block End y BK y B y B y B y B nside Wire ing at Tip Conn D y Block y y y y y y y Trnsf Leads at Conn Block Note: To silence ringer permanently disconnect and BK ringer leads and insulate and store ( ) 5E/F and 51F (Fig 15) <>5H (Fig 16) Page 7 BSP 52-S1-115-i2_1971-Q5-7jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :5:32

8 - : : i: t ' - SECTON LEAD OES CONN BLOCK TEMNALS NETWOK C4A NE :% Y!(; TP () '" () - Ll \lli () [S-] N ( )---i+- ::: tfi---- Q :y ) ) #f------[ S - -Y]----l: -- A ( S- ) :!Sl D (Y) y (Y) ;j BK) N PATY {5E/F SET) i LEAD OES CONN BLOCK MT COD NETWOK TEM! NALS ON C4A NE TP!)!) Ll () [S-] - N ( : t ) _ ---f% ,' i,!!& i! : ṛ ' ;: : ' **-+/ Y ( #------[S- ) - Y] ; :, -- :;; r;--+, -- tl';i BK) -- ) 1:=-:c -'- ) il,: 1 D (Y) : ' 11 Yl (i:l! l tn (NOTE Mf ill 1 tbk) ) :pj! ) + : :!! r = ( y) j:g 'ṙ 1;f : : 1 NEATVE N PATY {51F SET) :1 :CN:::------:}----4%---:: rf:441 1 L 'T+ J::------;+----:::; j-j ifi / """ --1'!11,1 :<:::")'------, t:!i '4 - """ t\t lt' ',t :' : l l'; : '-:' ' ; ' w: ( S -) wn: t --v 11%l::::: j 1111 : ; : ; : : : : :< ::;:pl t " ;: ; T 1 ( ) s ME r 1! L+,:!i ; _,!J!l ) : =,: :,: 'i,l : : : r' ' ;,''v f1: ( BK) ::: : : : J ( l AD (Y)!Y Y POSTVE N PATY (51F SET) TPt Fig 15-5E/F and 51F Telephone Set, Connedions (Sheet 1 of 2H Page 8 SSP i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29,212 23:5:54

9 SS 2, SECTON LNE SWTCH [S-] PLUNE SWTCH 4258 (MD) O 425E NETWOK i;1!:;;: W (NOTE 21 FOM SH l tbl or O BL B (5-B] Y [S-Y) BK (5-] i (S-BK] NOTES: FO NEATVE STATONS N OFFCES WTHOUT AN, {l LEAD FOM 426A TUBE MAY BE CONNECTED TO F NE OPEATON S MANAL 2 FO MANUAL SEVCE EMOVE DAL AND ADD STAP 3 LNE SWTCH SEQUENCE, HANDSET EMOVED { ) be MAKES 121 de MAKES {31 ob BEAKS {41 BEAKS CUENT COLO COOE [) MO COLO COOE D P DAL PULSE CONTACT N DAL OFF-NOMAL CONTACT TPA Fig 15-5E/F and 51F Telephone Set, Connections (Sheet 2 of 2H Page 9 BSP i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :51:21

10 SECTON S2-SO 1-11 S LEAD DES CONN BLOCK D4BJ MT COD NOTE TEM STP C4A NE PAT OF LNE SWTCH 9C, 7C(MD O 7DMD DAL MT CO D ON W! S B DP W E B (MD NETWOK S- S-BK DP- DAL PULSE CONTACT ON- DAL OFF-NO MAL CONTACT TPA NOTES: DO NOT USE 25-FOOT MOUNTN COilOS BECAUSE THE ADDED ESSTANCE MAY BE TOO HH FO ADEQUATE LLUMNATON FOM LAMP 2 N OFFCES NOT EQUPPED FO AN, THE LEAD MAY BE CONNECTED TO OUND F NE S MANAL 3 NDVDUAL O BDED 4 N PATY 5 NEATVE N PATY 6 POSTVE N PATY 7 EFE TO TABLE C FO LNE AND NE CONNS NOT SHOWN 8 LNE SWTCH SEQUENCE, HANDSET EMOVED ill be -MAKES (3l ab -BEAKS (21de -MAKES (4 gf -BEAKS Fig 16-5H and 51H Telephone Set, Connection Page 1 SSP S i2_1971-S-1jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29,212 23:51:41

11 TABLE D LNE AND NE CONNECTONS FO SOOL/M TELEPHONE SET FEATUES (SEE NOTES 3 AND 5 F 17 AND NOTE 3 F 18) TEM STP MT COD CONNECTONS ON CONN BLOCK inger Circuit Brought Out Separately in Mtg Cord With Without L2 F Ll* * Ll A A Y BK Control Leads for lal, 1A2 Key Telephone Systems and 11-Type Key Equipment With Without 5t L2 F Ll 6t L2 F K A Y BK * emove, insulate, and store (B) and (Y) line switch leads t On term strip Note: (S) strap is not used and should be removed iii _, m n z a ca ; BSP i2_ lljpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :52:7

12 SECTON LEAD OES TEMS ON NET C4-TYPE NE NOTES 1,2, 4,5,7,81 B O Bl BK -4 --'----' 11 FEATUE - SEPAATE NE CCUT SET WTHOUT TEM STP TP ; ::::,:! lw i N pq 11 b- L2 ''''\\ 'H A tfi t1 (Y) y Y -f----f ffi i A 8 tf 1 8 Kl jf i@ * FEATUE 2- " A " LEAD CONTOL SET WTHOUT TEM STP FEATUE 3- SEPAATE NE CCUT SET WTH TEM STP L FEATUE 4- LEAD CONTOL SET WTH TEM STP _j TP A Fig 17-SOOL/M Telephone Set, Current Connedions With and Without Terminal Strips (Sheet 1 of 2) Page 12 SSP S i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29,212 23:52:27

13 SS 2, SECTON LNE SWTCH!NOTE E NETWOK 3-TYPE HA NO SET (NOTE 21 () DP TO SH ;_ Y :_: _,c B }: W ON{ (W NOT ES: WH EN NE CAPACTO S EQUED N SEES WTH NE 5 CO NNECTONS fo C48 NE SHOWN SETS WTH C4A NE ON featu E O 3, TANSf E () N E LEA D TO TEM NA L K W ED AS FOLLOWS, ON NETWOK FEATUE featu E 3 featu ES 2 AN D 2 F"O MA NUAL SEV C(: e (8K) TO L e (BK) TO TEM e (BK) TO f featu ES AND 3 MO VE MOUNT N COD CONDUCT O () fom TEM NAL f TO ON NET WOK featu ES 2 A>Kl 4 MOVE MOU NT P CO D CO NDUCTO () AND (BK) NE LEAD fom TEM NAL f TO ON NETWOK EPLACE DAL WTH APPO P la TE APPA ATUS BLANK 3 TO P( VE NT FA LS E HOL D CONDT ON WH EN HA NDS ET S EST OED, SWTC H CO NTACTS d,e MUST BEAK BEfO E b,c BEAK: 4 WH EN BO TH featues AE EQU ED,EP LAC E 4-C ONDUCTO MOUNT N COD WTH 6-CO NDUCTO COD AND CONNECT (B L) AND (W) LEA DS TO (BK) AND () N E LEAD ES PECT VELY USE Dl CONNECTO S O SPA[ TE MNALS e (S) TO A e (S) TO A e (S) TO K e (S-) TO A e (S-) TO A e ( S-) TO A e () TO e () TO TEM e () TO L2 4 EMOVE (S) STAP FOM NET TEMS (ALL featues) 6 LNE SWTCH SEQUENCE HANDSET EMOVED () be-makes (3) to-beaks (2) de -MAKES 7 EfE TO TABLE D fo LNE AND N E CONNECT ONS 8, TO S L ENC [ N[ PEMA N[ NT L Y DSCO NNECT (BK) N E LEA D NSU LATE AND STO E DP- DAL PULSE CONTACT ON- DAL OFF-NOMAL *- NSULATE AND STOE TPA Fig 17-5L/M Telephone Set, Current Connedions With and Without Terminal Strips (Sheet 2 of 2) Page 13 BSP S i2_197l OS-l3JPB Scanned by Frank Harrell, {Cowboy Frank) Castle ock, Colorado Jan 29,212 23:53:

14 :, LEAD Q D DES - Tl P B O Bl TEM STP ] f r@&; !h----- ll l2 ::::m= lilli r i --# rṃ r '! _ -, Jj '--!i ii 5»;;::!i FEATUE -SEPAATE l N'fr C!culf:z,; -- (B _ K _ ) -- --#!4'-::: L1 NE Sill TCH (NOTE 4) ; (S-11) : BEAKS LAST (S-Y) M1 s :::s tl DAL (BL) (S-) E NETOK (NOTE 2) 3-TYPE HANDSET m!l z ll? ll! ll TP ln B Wl; (BK) 365[! () /(S!STAP (NOTE 5) DP-DAL PULSE CONTACT (S-Y) ON-DAL OFF-NOMAL CONTACT l!-1 NSULATE AND STOE NOTES' 1/HEN NE CAPACTO S EQUED N SEES TH NE ON FEATUE, TANSFE () NE LEAD TO TEM HAL K ON NETOK 2 FO MANUAL SEVCE' FEATUE 1- MOVE MOUNTN COD CONDUCTO () FOM TEMNAL F TO ON NETOK FEATUE 2- MOVE MOUNT! N COD CONDUCTO () AND BK NE LEAD FOM TEMNAL F TO ON NETOK EPLACE DAL TH APPOPATE APPAATUS BLANK 3 1/HEN BOTH FEATUES AE EQUED,EPLACE 4-CONOUCTO MOUNTN COD ll TH 6-CONDUCTO MOUNTN COD AND CONNECT ( BL) AND (W) LEADS TO (BK) AND () NE LEADS ESPECTVELY, USE D CONNECTO O SPAE TEMNALS 4 TO PEVENT FALSE HOLD CONDTON WHEN HANDSET S ESTOEO,SWTCH CONTACTS b,c MUST BEAK BEFOE d,e BEAK 5 CONNECTONS FO C4B NE SHOWN SETS WTH C4A NE WED AS FOLLOWS: FEATUE FEATUE 2 (BK) TO TEM 3 e (BK) TO F e (S) TO A e(s) TO K e (S-) TO A e (S-) TO A e ( ) TO TEM 4 ( ) TO L2 EMOVE {S) STAP FOM NET TEMS, (BOTH FEATUES) 6 LNE SWTCH SEQUENCE, HANDSET EMOVED: () be-makes (3) ob-beaks (2) de-makes (4) gf-beaks 7 TO SLENCE NE PEMANENTLY DSCONNECT (BK) NE NSULATE AND STOE 8 EFE TO TABLE D FO LNE AND NE CONNECTONS Fig /M Telephone Set, Connedions With (MD) Line Switch and Lead Colors BSP S i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29,212 23:53:21

15 SS 2, SECTON TABLE E LNE, NE, AND TUBE CONNECTONS FO SOOP AND 51 P TELEPHONE SETS TP TO SLENCE WE N PATY NOMAL NE EV BDED NE O COLO PATY NO CONNEC- WHEN CONN PEMA- LEAD DENT lions TO LL EQUP NENTLY O* TP PATY DENT OUND NE(-) PATESt POS!+l PATESt N TP N TP AND 5 2 AND6 3 AND 7 4AND 8 inger L2 L2 L2 K B B K B L2 L2 BK Ll B B K K L2 L2 s K K K B K B B K A A A A S- A A A B K B K K K K K Line Switch s L2 L2 L? A A A A L2 L2 L2 L2 L2 L2 426A Tube (51P Set) Mtg Cord Conn Block End Llor Ll or L2 L2 BK K K K K y L2 L2 y y y y y y y y y y y y y y BK B B B B B B B B B B B B B nside Wire ing Conn Tip Block D y y y y y y y y y y y y y y Trnsf Leads y y y y y y y y y y y y y at Conn Block B B B B B B B B B B B B B To silence ringer permanently for these classes of service, connect BK ringer lead to K terminal on network t To silence ringer permanently for negative and positive parties, connect yellow strip to terminal 6 instead of terminal 5 on terminal strip Note: efer to section on inductive noise for connections using 4-element ( 425A) tube Page u BSP i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :53:52

16 SECTON LEAD DES 'K TP l Nl ll mi ill t ' " ' 111 1! jjj E2 6 g a : " " fl 2 LAMPl 3 " p 3) rjl i l jjjj, n {l 1p DYJ Yl '-;-- u TANSFOME 8 BKl El,,, ' :::;: y S-BL) :* (S-Ol PAT OF LNE SWTCH l Yl ill' BLl :,HBLl MT COD l z Y) (l l ;:: z C4A NE c: :e c: Q PAT OF LNE SWTCH S- l t (S-BKl 9C, 7CMO), O 7D (MOl DAL S-W) L2 Ll K '---' l DP W l BL) 4258{MD) NETWOK i(noteil ), --" \ / A u /,, rl -- ( B ) f\ fl_ N,-----;;>}" '----ij C_ ---1-t--' Yl l O 3-TYPE HANDSET DP-DAL PULSE CONTACT ON-DAL OFF-NOMAL CONTACT ;; b z NOTES: 1 FO MANUAL SEVCE, MOVE S-Wl LEAD FOM F TO TEMNAL 2 FO NEATVE STATONS N OFFCES WTHOUT AN, LEAD FOM 426A TUBE MAY BE CONNECTED TO TEMNAL F NE OPEATON S MANAL 3 DO NOT USE 25 FOOT MOUNTN COD BECAUSE THE ADDED ESSTANCE MAY BE TO HH FO ADEQUATE LLUMNATON OF LAMP 4 N PATY5P SET) 5 TP PATY,OOOQ!DENT O {5P SET} 6 TP PATY 265 DENT O (5P SET) 7 NEATVE N F>TY 51P SETl 8 POSTVE N F>TY 151 P SET) 9 EFE TO TABLE E FO LNE AND NE CONNECTONS NOT SHOWN 1 LNE SWTCH SEQUENCE, HANDSET EMOVED be-makes {4)91-BEAKS 12) de-makes (5) jk-makes 13) ab- BEAKS TPA tflg 19-SOOP and 51P Telephone Set, Connectlonst Page 16 SSP i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :54:12

17 SS 2, SECTON TABLE F LNE AND NE CONNECTONS FO 5/S TELEPHONE SET E/W C4A NE NDV TP PATY NOMAL N WE O NO NDENT CONNECTONS PATY O COLO BDED np PAUY DENT OUND' NE EVESAL WHEN CONNECTED TO LON LNE EQUP TO SLENCE NE PEMANENTLY OUND (NOTE 1 AND 3) LEAD (NOTE 3) (NOTE 1 AND 3) OOO!l 265!1 OOO!l 265!1 OOO!l 265!1 DAL MAN DAL MAN DAL MAN DAL MAN DAL MAN DAL MAN DAL MAN DAL MAN DAL MAN Mtg Cord in Sett W-BL) [] F E2 F E2 F E2 F E2 F E2 F E2 F E2 F E2 Strap from Term on () F E2 El El El El El El El El El El El El El El El El Net to C4A inger (Note 2) () L2 L2 L2 K B B Ll B (BK) B B K Ll (S) K K K B K B B K (S-) A A A B K B A Line (W-S) Term Term Term A of A of A of A of Term Term Switch [S-B] Net Net Net Net 2 2 Mtg Cord at Conn Blockt (Line Only) (-W) [) (W-BL) [] (BL-W) [B-] ing ing Tip Tip Tip Tip Tip Tip Tip Tip Tip ing ing ing ing ing ing ing ing ing Tip Tip Tip Tip Tip Tip Tip Note 1: Use normal connections on a tip party identification ground stations f bell taps on stations connected to long line equipment, use ringer reversal column in Table F to retain tip party identification 2 (S) strap is not used and should be removed 3 Move strap at 44A connecting block from terminal 1 to 2 ' f long line equipment is used, tip party identification connections can be made in a No 5 crossbar central office ONLY if SD long line equipment is used, or in any type office ONLY if SD long line equipment is used t Only the optional mounting cord leads are shown in the table Connections for the remaining mounting cord leads are shown in Fig 2 ( ) Current color code [ ) MD color code Page 17 evised March 1972 BSP i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :54:51

18 SECTON S LEAD DES TE MS ON NET C4- TYPE NE (NOTE 4 9H, 7 (MD W O 7H (M D JM DAL f (NOTE 3) WJ: 425E NETWOK 3- TYPE HANDSET!!! J [ l z " Q_ Q_ N Tl l l@j 11;11 == ; -, : - - J - (B () (l [S-] 8 W (W),::: 1 _-: ; \:;:on '----t!ii!rit-) --:: :c"!ffi: [S-BK] --' NOTES: fo CONNECT ONS TO SPEAKEPHONE SYSTEM EfE TO APPOP ATE SECT ON N DVS ON CONNECT AS NDCATED fo NDVDUAL SEV CE;SEE TABLE f fo CONNECT ON fo OTHE CLASSES Of SEV CE 3 fo MANUAL SEV CE,EPLACE DAL \lith APPAATUS BLANKEfE TO TABLE f fo LEAD CHANES 4 CONNECT ONS fo C48 NE SHO\N SETS \lith C4A NE \ED AS follows: e(bk) TO f e(s) TO K e(s-) TO A e () TO L2 EMOVE (S) STAP FOM NET TEMS 5 LNE SWTCH SEQUENCE, HANDSET EMOVED ( ) be MAKES (2) de AND b1 c1 MAKE (3) ob AND o1 b 1 BEAK (4) fg BEAKS 6 TO SLENCE NE PEMANENTLY,D SCONNECT LEAD NSULATE AND STOE P-o AL PULSE CONTACT ON-D AL Off-NOMAL CONTACT ( )-CUENT COLO CODE ( )-MD COLO CODE (BK) NE TPA Fig 2-5/S Telephone Set, Connections Page 18 eissued March 1972 SSP i2_ Jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :55:11

19 SS 2, SECTON LNE AND NE CONNECTONS FO 5/S TELEPHONE SET E/W C4B NE NDV TP PATY N WE O NO DENT PATY O COLO BDED OUND LEAD DAL MAN DAL MAN DAL MAN Mtg Cord in Set (W-BL),[] F E2 F E2 Strap from Term on Net to [] F E2 El El El El C4B () K K K i'lger (BK) Mtg Cord at Conn Block* (Line only) (-W) [] (W-BL),[] (BL-W) [B-] ing ing Tip Tip Tip ing ing ing Tip Only the optional mounting cord leads are shown in the table Connections for the remaining mounting cord leads are shown in Fig 2 ( ) Current color code [ ] MD color code TABLE H NE LEAD CONNECTONS TO SLENCE NE PEMANENTLY FO SOOU AND 51 U TELEPHONE SETS CLASS OF NN SEVCE NE LEAD BK 5 5- ndividual or Bridged A K K A Tip Party Message ate Zone egistration K B K XB with AMA Tip Party S X S with AT S X S with AMA B K K MOD XB with AMA For all classes of service except those listed above: Connect (Y) strap to terminal 6 instead of terminal 5 on terminal strip Page 19 SP i2_ jpg Scanned by Frank Harre!J, {Cowboy Frank) Castle ock, Colorado Jan 29, :55:54

20 SECTON LEAD DES TP () N(fO CONN BLOCK, : h: =_::: D48J MT COD (NOTE 2) () () 3 " D(Y ; _] (BK) El - TANSFOME (Y) PAT OF ;:;"CH 584 KEY TEM STP E2 6 ), 2 d e -:;::: 9C, 7C (MD), O 7D(MD) DAL (W ) (S-Y) b c (5-B) ON * (W) DP (S- + (S-HK) L2 c () '" (BL), 425B(MD) NETWOK _ --" / F Ll! " eja rl ( 8 N (BK) u j, rl' /r\ r7 () (W) lf- TMT CV l O 3-TYPE HANDSET (S ) (S ) NOTES: FO NEATVE STATONS N OFFCES WTHOUT AN, LEAD FOM 426 A TUBE MAY BE CONNECTED TO TEMNAL F NE OPEATON S MANAL 2 NOT USE 25 FOOT MOUNTN COD BECAUSE THE ADDED E SSTANCE MAY BE TO HH FO ADEQUATE LLUMNATON OF LAMP 3 NDVDUAL O BDED 4 TP PATY, OOOODENT D (SOOU SET) 5 TP PATY, 265 OENT D (SOOU SET) 6 NEATVE N PATY (SOU SET) 7 POSTVE N PATY (51U SET) 8 EFE TO TABLE FO LNE AND NE CONNECTONS NOT SHOWN 9 LNE SWTCH SEQUENCE HANDSET EMOVED () be-makes (3) a b-beaks (5) j k-makes (2) de-makes (4)Qf-BEAKS DP- DAL PULSE CONTACT ON-DAL OFF-NOMAL CONTACT TPA Fig 21-SOOU and 51U Telephone Set, Connection Page 2 SSP i2_1971-S-2jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :56:18

21 SS 2, SECTON TABLE LNE, NE AND TUBE CONNECTONS FO 5U AND 51 U TELEPHONE SETS WE O LEAD COLO BDED N PATY TP TP PATY NEATVE(-) POSTVE(+) PATY PATES PATES NO DENTFYN OUND DENT D N TP N TP inger L2 L2 L2 K B L2 L2 BK Ll B L2 L2 s K K K B K A A A A S- A A A B K K K K Line Switch s L2 L2 L2 A A L2 L2 L2 L2 426A Tube (51U Set) M;tg Cord Conn Block End Ll or Ll or L2 L2 BK K K K K y L2 L2 y y y y y y y y y y BK B B B B B B B B B nside Wire ing at Tip Conn D y y y y y y y y y y Block Trnsf Leads y y y y y y y y y at Conn Block B B B B B B B B B Note: efer to section on inductive noise for connections using 4-element (425A) tube Page 21 BSP 52-S1-115-i2_1971-QS-21jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :56:51

22 SECTON LNE WE ' : :MS fil C4-TYPE =>:= NE!\1 o;s 2,!Jjij: [ijij; KS-19527, L NEON LAMP 425E O 4258 (MD NETWOK TP L1 N L2 8( N DY ;, (Y 'O MANUAL SEV CE EPLACE DAL \lith APPAATUS BLANK MOVE () ( S \1) LEAD FOM "r " TO "" TEM NAL 2 TO SLENCE NE PEMANENTLY FO ALL CLASSES Of SEV CE, CONNECT (Y ) MOUNT N COD LEAD TO' THE SAME TEMNAL AS ( ) MOUNT N COD LEAD AT CONNECT N BLOCK 3 SET WED FO N PATY SEVCE EFE TO TABLE J FO OTHE CLASSES or SEVCE 4 CONNECTONS o C4B NE SHOWN SETS WTH C4A NE WED AS FOLLOWS ' e ( TO L2 e (BK ) TO e (S ) TO A EMOVE (S) STAP FOM NET TEMS 5 LNE SW itch SEQUENCE, HANDSET EMOVED ( ) be MAKES (3 )ob BEAKS (2) de MAKES (4 ) gf BEAKS ) CUENT COLO CODE MD COLO CODE p DAL PULSE CONTACT ON DAL orr-nomal CONTACT e ( S TO K 3-TYPE HANDSET (W) Fig 22-5W and 5Y Telephone Set, Connection Page 22 SSP i2_ Jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :57:11

23 SS 2, SECTON TABLE J LNE AND NE CONNECTONS FO 5W AND 5Y TELEPHONE SETS NDV WE O LEAD COLO O BDED N PATY TP PATY Mtg Cord in Set L2 L2 L2 Ll Ll Ll y L2 L2 L2 C4A BK inger s K K K S- A A A Page 23 BSP i2_ ;pg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :57:39

24 : LNE CCUT SPEAKEPHONE CCUT PLU CONNECTONS BY LOCAL 47 OPTON 5 i 29 [ k 3 NN 3 k'' CONTOL 8 f LEAD D SNAT1N T A A AND/O A (NOTE ) P3 Tl l LK l 81 21< MT COOD (W-BLl (B-Y) (Y-Bl BL-Wl M it (O-Wl (W-1 (V-B ' (B-Vl (V-l -Vl (S-V) {V-BL) k: (BL-V il (W-S) {V-Ol i (V-Sl il B-W) (W-B {-} ill, {-l B w 2 3 Tal {W} ' llo), l (WJ '"\<all ill 9 (WJ (Wl '\<oj 7 (J / (YJ Bl (YJ (YJ 12 (W-Sl 13 (Y-S),; {W-B} m 19 (-BK 2 {BKl 17 (J Jj_ (W-l it M 16 (BKl ill 1%!! LNE SWTCH H 42SE NETWOK 3-TYPE DAl HANDSET EBEM 4 1J * PMB t DP ton EM 2 (WJ {Sl F!Bll7 {J ;r; t l V-l Ll S-V 1 H E-- )on j&w p!&i!llm W@t4U%imh&i:m -) :Jl CV 1 r TMT + PMB6 * (NOTE Zl 161\ ::1: EM5 11\ (8K} ::1: EM3 NOTES: EQUPMENT F SPEAKEPHONE S 1ili USED Ji 2 CONTNUTY TANSFE g (J (J (BK NA NE COMMON A O A LEAD STAP AT H NSULATED AND STOED ON - DAL OFF- NOMAL CONTACT OP -DAL PULSE CONTACT TPA :q -t i5 z Ul Ul Fig; 23-SOOAD Telephone Set, Connedions BSP S i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :58:1

25 SS 2, SECTON TABLE K MODFCATON TO POVDE STATON BUSY LAMP N 514B TELEPHONE SET LEAD COLO EMOVE FOM CONNECT TO Line Switch (B) [S-W] 5 El Headset On-Off (B) 5 El Key KS-15724, Ll Diode El 5 Page 25 SP i2_ Sjpg Scanned by Frank Harre!J, {Cowboy Frank) Castle ock, Colorado Jan 29, :58:3

26 SECTON DOP MT COD NA NE 9C, 7C (MD) O 7D (MD) DAL T W -BLl 8 O Bl W-S) BL-Wl 1 O l S -Wl7 v (NOTE ) Wl BK) l Sl 1 r 1 J * * (Wl DP +c ""B::Lc:O=::l L-----, @!e11,, t _jon Sl LNE SWTCH (NOTES 2 AND 3) d Wl -H Wl BL) TO SH 2 W-l A O O -Wl (-BKl A (W-) L O BL -Wl L (W-) - BZ (B -W) &ill "e>t-- -ltlml---"::", Bl B) --+-t--t t----! !f-;lii J l,:,' w - : ", : :: : ' :=<<:::{; E2 _ l :' : :;::>:: t, _::: :::::_::: --!!! k rt ; -=: BZ (W-B), f:l:h! --'---ffi---4,co+:-* lit :!d ',:,, ', w, : ;:' + u-:+ MAKE BEFOE BEAK PUSH TO FLASH +* TUN HEADSET ON-OFF AND FLASH KEY '-* MAKES FST J BK-Sl S-) S- BK) BK) '1 S-Vl W-Bl, TPA tfig Telephone Set, Cannedion (Sheet 1 of 2) Page 26 BSP i2_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29,212 23:58:5

27 SS 2, SECTON FOM SH 42E NETWOK L -, (8L O ) l ls! K 'J' ;_:_; A (W) (W BL W- L '/' c 8 NOTES: CONNECT TO TP AND N O TO COMMON O PVATE LNE NE CCUT AT CONNECT N BLOCK AS EQU ED 2 MANUFACTUE DSCONTNUED!MD LNE SWTCH AANEMENT SHOWN AS FOLLOWS: mn NET - : TEM Ll NE SWTCH WOK p )j ASSEMBLY!!}; ' 1 =:::;; [s-y] b c ::;:;:;::': gg:, [S-8) ;; : itt [s-] d * ::;:;=:;::: illt [s-) ST T1W [s -w] 41 ill! [S-8K] MD LNE SWTCH SEQUENCE, HANDSET EMOVED () de MAKES (2) be- MAKES (3)Qf-BEAKS 3 CUENT LNE SWTCH SEQUENCE, HANDSET EQUED (l)bc-makes (2) de- MAKES (3)1-BEAKS 4 WHEN VSUAL SNAL NDCATON ( O KT OF PATS) S POVDED, CONNECT LAMP LEADS TO TEMNAL El AND E2 CUENT COLO CODE OP-DAL PULSE CONTACT [] MD COLO CODE ON -DAL OFF-NOMAL * NSULATED AND STOED CONTACT CUENT SETS E/W 2418 AMPLFE EALY SETS E/W 241A AMPLFE 18K-S S- W W BKl f> = rr r:jj 3-TYPE HANDSET l(ill & lwllill!wil!lnnt :THJHiBHM!WlNffiVBAiillifuT 8@ %N 4lillWl ljdw}!miiil!!fljwffim THlliffiffi!ill!l!Wll-lM4illrMttillM1D[!ill!ftT!ill!l ill[ffil!l S- BKl BK BK) Y-) S -V W-B) 241-TYPE AMPLFE t HEADSET JACKS TYPE HEADSET Fig Telephone Set, Connections (Sheet 2 of 2) Page 27 SSP i2_1971 S-27jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :59:19

28 SECTON D6AA TEMNAL STP LNE MT COD AND KEY SWTCH :::::::: 9C Dl AL 425E NETWOK C4B NE (NOTE 2) 3-TYPE HANDSET Tl P () () e d () L2 (BK ) ln () () MB (BL ) E (-BK ) a b (S) (Y) A 1/ " K () MB () (BK ) LAMP LAMP ND (BK (Y) E2 () 3 Y) - c DP F (W) JA (BL ) / "" f ",_ () (B ) -- c p f " (S-l ' ' 52A LAMP AND LAMP STP :t NOTES: LNE SW TCH SEQUENCE HANDSET EMOVED (l) bc- MAKES (3) ab- BEAKS (2} de - MAKES (4) gf - BEAKS ON :f (BK ) (W) () () OP- DAL PULSE CONTACT ON-DAL OFF-NOMAL CONTACT B "" N / (BK ) 1 T () "-' (W) (W) r ' MT CV 2 CONNECTONS FO C4B NE SH\, 1 SETS WTH C4A NE WED AS FOLLOWS : (BK ) TO L2 (S-) TO ( S ) TO ( ) TO K 3 FACTOY WED FO BDED SEVCE TPA 5551 Fig Telephone Set, Connedions Page Pages SSP i2_ Jpg Scanned by Frank Harrell, (Cowboy Frank) Castle ock, Colorado Jan 29, :59:39