Bell System Practices AT&T 502 Reference Download

Page: 5 / 28

TABLE B

502A/B LINE AND RINGER CONNECTIONS

FEATURES

CONNECTIONS TO TERMINALS IMSIDE SET

EXTERNAL CONNECTIONS FOR

MOUNTING CORD

EX-

RINGER

CLUSION

IN SET

KEY

COM

USED AS

USED TO

MOUNTING

EXCLUSION

C4A

C4B

EX·

CUT OFF

CORD

KEY

RINGER

LINE

CLUSION

PVT

LEADS

LINE

LEADS

(NOTE)

CIRCUIT

RINGER

��

CIRCUIT

.,;;

ffi�

,.,�

(G)

(Y)

(B«)

(BL)

(W)

(Y)

(BK)

(BL)

(W)

(R)

(BK)

(S)

(S·R)

(S)•

(BK)

RING

TIP

RING

TIP

��

g�

EE�

��

(R)

[R·Y]

[G·Y]

E 1

( ) Current

color code.

[ ] MD

color code.

*Strap connected to A of network.

Note:

Refer to notes 3, 4, and

Fig. 4.

TABLE C

5 1 0A/B LINE AND RINGER CONNECTIONS (EQUIPPED WITH 4-CONDUCTOR MOUNTING CORD)

FEATURES

(RINGER IN SET

USED

LINE RINGER)

TURN KEY

�

USED TO

�

CUT OFF

�

0"-

��

�

0�

"' z�

=�

�-w

"'�u

g�

"'"

�

�..,

,�

EE�

zo.

;;;

ii:!

"'"'

Note: Refer

notes 2, 3, 4, and 5, Fig.

CONNECTIONS FOR URMINALS INSIDE SET

MOUNTING

TURN

CORD

KEY

LEADS

S·R

s-;

BSP

S02·501-102-i02_1971-07-0S.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 30, 2012 00:02:42

EXTERNAl CONNECTIONS FOR

MOUNTING CORD

C4A

RINGER

LINE

SIGNAL

LEADS

CIRCUIT

(NOTE)

S·R

RING

TIP

RING

TIP

GRD

KEY

EQUIP.

OR STA

BUSY'

LAMP

CIRCUIT

A OR

A1 OR

GRD

CUTOFF

CIRCUIT

RING

TIP

Summary of Contents for AT&T 502

Page 1: ... EXCLUSION HOLD KEY LINE AND SIGNAL KEY 502 TYPE 511 OR 515 510 555 OR 558 Fig 1 502 510 511 515 555 and 558 Type Telephone Seta American Telephone and Telegraph Company 1971 Printed in U S A SSP S02 S01 102 i02_1971 07 0l jpg Scanned by Frank Harrell Cowboy Frank Castle Rock Colorado Jan 30 2012 00 00 41 Ll NE AND SIGNAL KEY Page 1 ...

Page 2: ...cal Exlusian Switch 2 IDENTIFICATION 2 01 Purpose These sets are used where exclusion 2 line pickup or both are desired in common battery areas manual or dial Page 2 Fig 3 Typical Turn Key 2 02 Ordering Guide Table A lists components of these sets 2 03 Color a All sets available in standard colors indicated in Section 500 120 100 b Components available in color include dial or apparatus blank hand...

Page 3: ... P 20A455 D P 80D700 F D20J HlA or H1B P 20F139 P 20F137 H D20K 515 B D6AA P 21Fl95 P 21F217 555 B P 21F197 P 21F218 A MD C4A B MD P 81E800 P 11E256 558 c P 11E244 D F H1A or P 20F167 P 20F166 H1B In addition to parts in tabular listing sets contain a 425 type network G type handset and 7 or 9 type dial 95 type apparatus blank included with 502A 510A E 511A C and 558 A C Page 3 SSP 502 501 102 i02...

Page 4: ...onnect the talking path of the extension 4 INSTALLATION AND MAINTENANCE 4 01 Maintenance of handsets dials and ringers is outlined in sections covering these components Page 4 a When replacement of a split coil ringer i e a C4A or HlA is necessary the single coil version C4B or HlB can be used in certain sets if tip party identification is not required b The Gl or G3 type handsets in these sets ma...

Page 5: ... B LINE AND RINGER CONNECTIONS EQUIPPED WITH 4 CONDUCTOR MOUNTING CORD Q Ul FEATURES RINGER IN SET USED AS LINE RINGER TURN KEY USED TO CUT OFF 0 0 z w u ww g R EE zo ii 1 L2 1 L2 1 L2 1 L2 1 L2 2 I Note Refer to notes 2 3 4 and 5 Fig 6 CONNECTIONS FOR URMINALS INSIDE SET MOUNTING TURN CORD KEY LEADS LEADS G y BK S R s R L1 5 6 L2 L1 L2 L1 5 6 L2 L1 1 L1 3 4 L2 L1 L2 L1 3 4 L2 L1 3 L1 3 4 G R L2 2...

Page 6: ...PRIVATE LINE AUDIBLE SIGNAL S I SWITCH R I NOTE 6 L2 S Y G d f BR g Y t f DP I r I l t J G OR BLI S BRJ W S R R S BK BK ON TO SllENCE RINGER PERMANENTLY REMOVE BK RINGER LEAD FRC i TERMINAL 2 INSULATE AND STORE 6 LINE SWITCH SEQUENCE HANDSET REMOVED b c MAKES SETS ARE rACTORY WIRED f BRIDGED RINGING SERVICE CONNECTIONS rOR C4B RINGER SHOWN IF C4A RINGERIS USED WIRE AS FOLLOWS BK TO 2 OF TERM STRIP...

Page 7: ...ND S STRAP LEAD TO TERMINALS 4 AND 3 RESPECTIVELY 4 A 7 TYPE BUZZER ON A 44B BRACKET MAY BE SUBST I T UTED FOR THE RINGER AS A COMMON OR PRtVA TE LINE AUDIBLE SIGNAL RI S R B KI S BK I GN WI I ON L t w J C4 TYPE RINGER NOTES 2 3 4 AND 5I G3 TYPE H ANDSET i oc t 1 RCVR TRMTR 7 LINE SWITCH SEQUENCE HANDSET REMOVED be MAKES de MAKES ab BREAKS fg BREAKS 0P DIAL PULSE CONTACTS 0N DIAL Orr NORMAL CONTAC...

Page 8: ...2 K R G y BK BL w A El E2 A R G y BK 5 1 1 A B LINE AND RINGER CONNECTIONS INTERNAL CONNECTIONS FEATURES SIGNAliNG INCLUDED WITH All FEATURES CONNECTIONS TO TERMINALS INSIDE SET RINGER TURN KEY EXCLUSION IN SET USED TO KEY EXCLUSION C4A USED TO USED AS CUT OFF CUT OFF MOUNTING TURN EY RINGER CORD EY LEADS LEADS LEADS LEADS NOTE 3 NOTE 4 FIG 6 FIG 6 0 a i ffi 0 lil EE EE Bl W W Bl BR W W BR w o 0 W...

Page 9: ...L BR W BL W W BL BR W BL W W BL BR W BSP 502 501 102 i02_1971 07 09 JP8 Scanned by Frank Harrell Cowboy Frank Castle Rock Colorado Jan 30 2012 00 04 25 EXTERNAL CONNECTIONS FOR MOUNTING CORD LINE SIGNAL EXCLUSION CUTOFF 2 CIRCUIT CIRCUIT CIRCUIT TIP s GRD RING TIP RING TIP W 0 0 W G W W G BR W W BR W 0 0 W G W W G BR W W BR W 0 0 W G W W G BR W W BR W BR W 0 0 W G W W G W BR W 0 0 W G W W G W BR W...

Page 10: ... 3 AND 4 RESPECTIVELY 4 A 7 TYPE BUZZER ON A 448 BRACKET MAY BE SUBSTITUTED FOR THE RINGER AS A COMMON OR PRIVATE LINE AUDIBLE SIGNAL 5 FOR RINGER CONNECTIONS TERMINATE W S OR BR BK AND S W OR BR Y LEADS TO LINE I OR 2 AT CONNECTING BLOCK I O O O n S R A 2650fi R 6 LINE SWITCH SEQUENCE HANDSET REMOVED be MAKES de MAKES f g BREAKS DP DIAL PULSE CONTACTS ON Dl AL orr NORMAL CONTACTS CURRENT COLOR CO...

Page 11: ...ADS LEADS LEADS NOTE 4 NOTES5 AND FIG 7 6 FIG 7 w Oo 0 ffi a ffi c Z OQi _ IE lEw iii Bl W W Bl 5 R 5 G Y BK R BK S 5 R U zz oz z rl o o z z z a R G R Y G Y zo iii u _ 1 L2 L1 L2 L1 L2 L1 5 6 K A 1 L2 L1 L2 L1 L2 L1 1 2 K A 1 L2 L1 L2 L1 L2 L1 3 4 K A 1 L2 L1 G R L2 L1 5 6 K A 2 1 2 L2 L1 1 2 5 6 K A 2 1 2 L2 L1 1 2 5 6 A A 2 1 2 L2 L1 5 6 E1 E2 A A MD color code Current color code Page 1 1 SSP 50...

Page 12: ...ffi ji BE C C RING TIP RING TIP s GRD RING TIP RING TIP RING TIP zo a w 1 R G BL w BR Y BR BK y BK BR R BR G 1 R G BL w BR Y BR BK y BK 1 R G BL w BR Y BR BK 1 R G BL w BR Y BR BK y BK BR R BR G 2 R G y BK BL w BR Y BR BK BR R BR G 2 R G y BK BL w BR Y BR BK 2 R G y BK BL w SSP 502 501 102 i02 _1971 07 12 jpg Scanned by Frank Harrell Cowboy Frank Castle Rock Colorado Jan 30 2012 00 05 31 COM OR PV...

Page 13: ...ONNECT Y OR R Y AND BK OR G Y EXCLUSION KEY LEADS TO TERMINALS 3 AND 4 RESPECTIVELY 5 A 7 TYPE BUZZER ON A 448 BRACKET MAY BE SUBSTITUTED fOR THE RINGER AS A COMMON OR PRIVATE LINE AUOIBL SIGNAL 6 fOR RINGER CONNECTIONS TERMINATE BL R OR BR R AND R Bl OR BR G MOUNTING CORD LEADS TO LINE I OR L INE 2 AT CONNECTING BLOCK 7 LINE SWITCH SEQUENCE HANDSET REMOVED be MAKES ab BREAKS de MAKES fg BREAKS ON...

Page 14: ...ord G R 17 16 TABLE J 511F AND H TELEPHONE SETS MODIFICATIONS FOR 1 LINE PICKUP CUTOFF EXTENSION STATION OR EXTENSION LINE RINGER REMOVE CONNECT TO FROM INSULATE WIRE OR LEAD COLOR AND TERM TERM NET STORE STRIP STRIP W 0 20 3 Line R 2 Key S R 15 2 v 2 BK 1 Exclusion y 2 Switch s 3 Line BR 20 3 Switch G 15 2 1 F Strap 18 L2 Use M1W cord or equivalent BSP 502 501 102 i02_1971 07 14 jpg Scanned by Fr...

Page 15: ...RMANTLY REMOVE IBK RINGER LEAD FROM TERMINAL Mt 5 rn uB SDi CHANGE G R MOUNTING CORD LEAD FROM TERMINAL Wt 17 TO 16 CONNECT BUZZER ACROSS TERMINALS 16 AND 19 tit 6 LINE SWITCH SEOUENCE HANOSET REMOVED T be MAKES ob BREAKS de MAKES fQ BREAKS 1 SETS ARE FACTORY WIRED FOR BRIDGED RINGING SERVICE CONNECTIONS FOR HIB RINGERSHOWN IF HIA RINGER IS USED WIRE AS FOLLOWS BK TO 2 OF TERM STRIP Sl TO K Of NET...

Page 16: ...CING SERV ICE CONNECT IONS fOR HIE RINGER SHOWN IF HIA RINGER IS USED WIRE AS FOLLOWS BK TO 2 Of TERM STR I P 5 T O K O f NETWORK 5 R TO A OF NETWORK R TO I Of TERM STRI P REMOVE IS STRAP FROM A Of NETWORK AND I OF TERM STRIP 6 LINE SWITCH SEQUENCE HANDSET REMOVED bC MAKES ob BREAKS de MAKES fg BREAKS INSULATE ANO STORE QP DIAL PULSE CONTACTS QN DIAL OFF NORMAL CONTACTS 23 J_l_______Ji ______J Jtt...

Page 17: ...PERMANENTLY REMOVE BK F I NGER LEAD fROM TERMINAL 2 INSULATE AND STORE 5 S T 5 ARE r ACTORY WI RED F OR BRIDGED R I NG I NG SERV I C E CONNECT I ONS r O R H I B R I NGER SHOWN I F H I A RINGER IS USED WIRE AS FOLLOWS BK TO 2 Of TERM STR I P S TO K O r NeTWORK S R TO A Or NETWORK R TO I Of TERM STRIP REMOVE S STRAP fROM A OF NFTWORK AND I OF TERM STRIP 6 LINE SWITCH SEQ HANDSET REMOVED be MAKES ob ...

Page 18: ...D 4 RESPECTIVELY 2 TO S ILENCE RINGER PE RMANENTLY CONNECT R AND BK RINGER LEADS TO A AND K OF NETWO RK 3 LINE 51 ITCH SEQUENCE HAMJSET RE o VEDo b e MAKES d e MAKES fg BREAKS 4 L1 NE KEY SEQUENCE L I NE I TO LINE 2 o b MAKES cd BREAKS I g BREAKS d e MAKES gh MAKES j k BREAKS f L i W f r r i ON WI c DP D I AL PULSE C J TACTS ON DIAL OFF NORMAL CONTACT S Fig 11 5158 Telephone Set Connedions BSP 502...

Page 19: ...IDE FOR RINGING ON LINE I FOR RINGING ON LINE 2 CONNECT R AN0 8K RINGER LEADS TO TERMINALS 5 AND 6 RESPECTIVELY 2 TO SILENCE RINGER PERMANENTLY CONNECT R AND BK RINGER LEADS TO A AND K OF NETWORK Fig 12 5558 Telephone Set Connedions BSP 502 S01 102 i02_1971 07 19 jpg Scanned by Frank Harrell Cowboy Frank Castle Rock Colorado Jan 30 2012 00 08 28 425E NETWORK I G3 TYPE HANDSE I I l 1 f l BL Wl l R ...

Page 20: ...NNECTIONS FEATURES SIGNALING INCLUDED WITH All FEATURES RINGER IN SET USED AS w z oo w ow ffi O W w oo w o w zz z o ww 1 1 1 1 1 1 1 2 2 2 Current color code MD color code Page 20 TURN KEY USED TO CUT OFF i Z 5 o EXCLUSION KEY USED TO TURN CUT OFF KEY LEADS 0 w S R G 8K EE S Gl L2 L1 L2 L1 L2 L1 L2 L1 E1 E2 E1 E2 G R L2 L1 L2 L1 L2 L1 SSP 502 501 102 i02_1971 07 20 jpg Scanned by Frank Harrell Cow...

Page 21: ...N OR PRIVATE LINE AU D I B L E S IGNAL 4 TO S I LENCE R I NGER PERMANENTLY CONNECT BK AND R RINGER LEADS TO TERMINALS K AND A ON NETWORK 5 LINE SWITCH SEQUENCE HANDSET REMOVED be MAKES ob BREAKS de MAKES f g BREAKS Y 5 Y LINE SWITCH NOTE 5 e W CS WJ BKI 5 BK CURRENT COLOR CODE MD COLOR CODE IN SULATE AND STORE BL h 1 0ili 42 58 NETWORK NOTE I If l GN J f j WI I I i1QN 2 W I ffi f t 1 t OP DIAL PUL...

Page 22: ... CIRCUIT 0 z ti i RING TIP RING TIP s GRD RING TIP RING TIP SE OR R OR 8 L2 L1 8 7 5 6 3 4 L2 L1 8 7 5 6 L2 Ll 8 7 5 6 3 4 L2 Ll 8 7 5 6 3 4 L2 L1 8 7 5 6 L2 Ll 8 7 5 6 3 4 L2 Ll 8 7 5 6 3 4 1 2 3 4 8 7 5 6 1 2 3 4 8 7 5 6 1 2 3 4 8 7 BSP 502 501 102 i02_1971 07 22 jpg Scanned by Frank Harrell Cowboy Frank Castle Rock Colorado Jan 30 2012 00 09 36 COM OR KEY EQUIP PVT liNE OR STA BUSY RINGER LAMP ...

Page 23: ... CONNECT IONS TO lA HOME INTER PHONE OR SPEAKERPHONE SYSTEM REFER TO RESPECTIVE SECTION OP D I AL PULS CONTACTS 2 G LEAD IS CONNECTED TO F TERMINAL IN DIAL SETS AND TO RR TERMINAL IN MANUAL SETS 3 USE A AND AI CONTROL LEADS ON I LINE PICKUP FEATURES ONLY ON 01 AL Off NORMAL CONTACTS I CURRENT COLOR CODE MD COLOR CODE B 189631 Fig 14 558C D Telephone Set Connedlona 2 Line Pickup Signaling Exclusion...

Page 24: ...Hold y 2 TABLE 0 558F MODIFICATIONS FOR 1 LINE PICKUP AND CUTOFF OF EXTENSION STATION OR EXTENSION LINE RINGER REMOVE CONNECT INSULATE WIRE OR LEAD COLOR FROM TO AND TERM TERM STORE STRIP STRIP R 2 S R 15 2 Line Key 0 BK 3 W 0 20 3 Exclusion y 2 Key Line Switch G 15 2 Strap M1W 1 to F Cord or on Net Equivalent 3 to 20 SSP 502 501 102 i02_1971 07 24 Jpg Scanned by Frank Harrell Cowboy Frank Castle ...

Page 25: ...2 0 L l 0 G 0 425E NETWOR K 1 Fig 1 S 558F Telephone Set Connections Wired For 2 Line Pickup With Exclusion on Line 1 and Signaling BSP 502 501 102 i02_1971 07 25 jpg Scanned by Frank Harrell Cowboy Frank Castle Rock Colorado Jan 30 2012 00 11 00 1 I GN W R TPA 478421 ...

Page 26: ... Sl STRAP FROM A OF NETWORK AND I OF TERMINAL STRIP 4 TO SILENCE RINGER PERMANENTLY REMOVE BKJ RINGER LEAD FROM TERM 2 INSULATE AND STORE I NSULATED AND STORED OP DIAL PULSE CONTACTS ON DIAL OFF NORMAL CONTACTS HI TYPE RINGER NOTES 3 AND 4 R 3650Q j BKl i LINE SWITCH NOTE 2 l G W Bkl R 9H DIAL I I tau I DP G OR BL I W I ON t W Y Yl ON 425E NETWORK l If l RR GN I BK I I I Y J l TRMTR RCVR G3 TYPE H...

Page 27: ...RY WIRED TO PROVIDE BRIDGED RINGING SERVICE CONNECTIONS FOR HIB RINGER SHOWN IF H I A RINGER I S USED WIRE A S FOLLOWS BKJ TO 2 OF TERMINAL STRIP S TO K OF NETWORK S R TO A OF NETWORK R TO I OF TERMINAL STRIP REMOVE S STRAP FROM A OF NETWORK AND I OF TERM STRIP 4 TO SILENCE RINGER PERMANENTLY REMOVE BK RINGER LEAD FROM TERM 2 INSULATE AND STORE M I NSULATE AND STORE OP DIAL PULSE CONTACTS ON DIAL ...

Page 28: ...Such as Pulling or Lifting BSP S02 S01 102 i02_1971 07 28 jpg Scanned by Frank Harrell Cowboy Frank Castle Rock Colorado Jan 30 2012 00 12 14 _ _ _ _ _ _ _ ____ ...

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