Bell System Practices 2831 Series, Installation & Maintenance Instructions Manual

Page 1: ...nges have been omitted 2 IDENTIFICATION A Purpose 2 01 The831 Rotary dial and 2831 TOUCH TONE dial Fig 1 type telephone sets are obtainable as modular or complete desk type 20 button key telephone sets equipped to provide standard key system features Refer to Table A for available colors Fig 1 2831DM MD or 2831FM Telephone Set B Application 2 02 Used with cent ral office PBX or intercommunication ...

Page 2: ...cing MLC 831DM MD 831FM 2831DM MD and 2831FM telephone sets only on pickup lines only no conferencing on intercom lines or pickup to intercom lines Hold button can be illuminated lamp ordered separately KS 20419L1 buzzer provided and connected to dedicated mounting cord leads Provisions for mounting KS 8109L2 buzzer or additional KS 20419L1 buzzer s on base pan Provision for polarity guard assembl...

Page 3: ...3 702 101 be preset without removing the handset from the cradle c Line Recall An amber capped recall button is provided to simulate switchhook flash without releasing the buttons This button is located on the left end of the top 10 button key d Intercom Three buttons are dedicated to the intercom feature These buttons are located on the right end of the lower 10 button key and may be converted in...

Page 4: ... employs t he 2Al matrix hlock in lieu of t he polarity 1 uard described in paraw a ph 3 05 The unit provid s eight pola rity gua rd circuits One polarity gu lrd circuit is required for each line which is conferenccable by multibutton depression The polarity guard is located betwf en the station Page 4 side of the line circuit and the station cut down field 3 07 Where conditi ons warrant G8A6 G12A...

Page 5: ... be limited to checking for loose or broken connections and replacement of items per local instructions 4 02 Early manufactured cords in neutral light pearl gray 82 and dark gray brown 83 are rated MD All new mounting cords will be satin silver 87 4 03 Current sets are equipped with a PlB ringer wh ich does not have the S R S BL leads For maintenance purposes either the PlB or PiA ringer may be us...

Page 6: ...nnections refer to Section 512 740 470 and Table J Page 6 5 06 To provide polarity guard for all 2831 type telephone sets except the 2831DM and 2831FM refer to Table F The 2A1 matrix block is used as a polarity guard for the 2831DM and 2831FM telephone sets see paragraph 5 08 5 07 For schematic information refer to Fig 5 through 14 5 08 The 2A1 matrix block ordered separately provides the polarity...

Page 7: ...VERSION OPTION 647ASC KfY LEADS LOWER KEY NOTE 0 W S W G R BL BK BR BK BK BR BK BL R G W S HPPPPPPPPP 7 7 7 11 11 11 15 15 15 HPPPPPPPPS 7 7 7 11 11 11 15 15 27 HPPPPPPPSS 7 7 7 11 11 11 15 27 27 HPPPPPPSSS 7 7 7 11 11 11 27 27 27 HPPPPPSSSS 7 7 7 11 11 27 27 27 27 HPPPPSSSSS 7 7 7 11 27 27 27 27 27 Note Move O Y mo un ting cord lead from Lerminal 1 to terminal 27 Beyond five signal conversions st...

Page 8: ...ected via internal mounting 17 17 17 11 11 27 HPPPPPPPSS cord wiring and terminated on 17 17 17 11 27 27 Term 7 and can not be converted HPPPPPPSSS to signaling 17 17 17 27 27 27 HPPPPPSSSS 17 17 27 27 27 27 HPPPPSSSSS 17 27 27 27 27 27 Note Move 0 Y mounting cord lead from terminal 12 to terminal 27 For sixth signal conversion strap terminal 27 to a spare terminal and move the BL BK signal lead f...

Page 9: ...e 2 77 Line Ring R 6 16 Notes 2 and 3 Line Ring R 6 16 Line Tip G F 6 831A1M 831 B1M Line Tip G F 6 831C 831CT or 831CM Line Ring R 6 F E W Old Line Switch Line Ring R 6 F 2831A1M 2831BlM Line Tip G 8 6 2831C 2831CT or Line Tip G 8 6 2831CM E W Old Line Switch Line Ring R 6 8 Note 3 Line Rina R 6 8 Note 1 Rotary dial telephone set must have a 533K diode ordered separately installed between RR and ...

Page 10: ...CTIONS LEAD OPERATION Hold Key Remove from terminal 22 and connect to 27 or other G W spare terminal Connect as shown or to same 533K Diode spare terminal as above Ordered Separately e L o Mtg Cord Y O Remove from Note connect to 22 Q 831AlM MD or 2831AlM MD early version 0 All other telephone sets Note Use spare mounting cord lead if Y O lead is used to provide other options TABLE H I HOLD CONNEC...

Page 11: ...TI RIGHTI T 1 l 1 R 5 5 T 7 7 2 R 11 11 T 13 13 3 R 17 17 T 19 19 4 R 23 23 T 25 25 5 R 29 29 T 31 31 6 R 35 35 T 37 37 7 R 41 41 T 43 43 s R 47 47 If more than 8 lines are provided additional 2A1 matrix blocks are required ISS 8 SECTION 503 702 10 I Page 11 ...

Page 12: ...LEPHONE LEAD REMOVE FROM CONNECT TO SET COLOR TERM TERM 831FM DM CM or 2831FM DM CM G 16 8 Mfg 2 77 or later 831CM Mfg G 16 F before 2 77 G 2831CM Mfg G 8 16 before 2 77 Note The new line switch can be identified by two additional leads which are BL No modification is required on sets equipped with old type line switch no BL leads ...

Page 13: ...SI 8 ILl PULSE c RRj Ill b T AI 8 c 8R A T c W e d 8 R R f Ill g NOTES 1 LATER 831C TELEPHONE SET IS EQUIPPED WITH AG3A6 HANDSET WHICH IS WIRED DIRECTLY TD THE TELEPHONE SET EARLY PRODUCTION 831 TYPE TELEPHoNE SETS WERE EQUIPPED WITH AG12A HANDSET 831 TELEPHONE SETS ARE EQUIPPED WITH G 15A HANDSET 2 EARLY PRODUCTION TELEPHONE SETS AY BE E W P1A RINGER WHICH WILL HAVE S S R AND BL LEADS INSULATED A...

Page 14: ...f 7 Jill aJ Y 8 81 IQ A 111 Y Rl ICA OR IRA DIAL 8CA IKY Y P3 WJ IYJ P4 W 8 T e d Bl BL 1 I I Bl 1 1 I F a 8 Y AI I UI SE b c RRj Cll Ill Ill 8 A c c I I IN e d 8 R R f Ill g NOTE TERPIINAL 18 IS ON SET TERPIINAL BOARD Fig 6 Part of 831CM Equipped With New Une Switch and Manufactured Before 2 77 Telephone Set Connections Page 14 ...

Page 15: ... L2 r 18K 0 o Y S B1 r 8K A 8 Y R1 ICA DR IRA DIAL 8CA y Y P3 WI Y P4 W 1 0 18 1 1 l Ill e Bll 71 71 I F __ d 8L BL Pll SE 8 T i c OR Ill 0 B 0 T c J 8 a S b Y A1 V Ill A c W 0 A e d R f 8K g NOTE TERIIINAL 8 ANO 16 ARE ON SET TERIIINAL BOARD Fig 7 Part of 831 CM Manufactured 2 77 or Later Telephone Set Connections Page 15 ...

Page 16: ... lJNE v JACK SWJTot E 3 T 8 8 r A 8 W II 8 p q 0 0 D T1 1 L A A A IT t v rt e 11 41 R II 71 P11 RJNGIR w K NOTE 2 IRi 11 11 X y r 7r II z _S r tt W A 0 IWR II II l I Y 1 11 c e I S Y A1 W 18 R 0 e d k I u Ill t f AI r IR A I 11 11 I IV V IR t 0 Ft r HI 0 ut 0 L2t NETWORK Fig 8 Port of 2831A1M MD BIM MD C MD CT MD or CM Equipped With Old Line Switch Telephone Set Connections Page 16 ...

Page 17: ... TELEPHONE SETS ARE EQUIPPED WIHT G15A HANDSET 2 EARLY PRODUCTION TELEPHONE SETS AY BE E W P1A RINGER WHICH WILL HAVE S S R AND BL LEADS WHICH ARE INSULATED AND STORED 3 TER INAL 8 IS ON SET TER INAL BOARD IF SET HAS BEEN CONVERTED IN SERVICE CENTER TO A 2831 TYPE AND HAS A 4228AA NETWORK LEADS SHOWN TER INATED ON SWILL BE ON L1 LEADS SHOWN TER INATED ON TWILL BE ON L2 AND TER INAL F CANNOT BE USE...

Page 18: ...T 11 Cit Stall IE CJILt _ lEAD6 TfiiiiiATED Cit T tall IE Cit l2 _ T RIWtAl F CAIIIIT IE t u AS A FN TEIIIIIAl 35AF3A DIAL v HANDSET COIID J LINE SWITOI JACK NOTE 2 G ll ll _ til T k p q 0 Ci i a d C ill T l 0 Tt NETWORK A 8 Y Rt til rt t G Y 8 It y R G R X l I l IHI II I f V PIB RING R C r rJ tit RR 8 k i Y At u 8l Ill A c r l tlt I l l c t t 0 R Ff tlt t 0 l tt T 0 u l2t c IHI V 8 R HI d t_ Y Y ...

Page 19: ...K B R STRAP o 13 0 028 Ill_ lTE 3 11 D Y c t I 0 N 5 ii Ci N STRAP Ill 3 01 I i i A 1 1 J1 1 5 J N Y A B T R R Y G N t i 1 1 1 1 1 tJtJttiDfJUtttliJUUtl iJUtt CHAIJIIIII llaTQt IIJlD LifE 1 LifE 2 LIIE 3 P08 L PAII T DF M 7 y Fig 10 831A1M MD B1M MD C MD CT MD CM or 2831A1M MD B1M MD C MD CT MD CM Telephone Set Key and Mounting Cord Arrangement Sheet 1 of 4 Page 19 ...

Page 20: ...ORil OORil ASSEIIILY TEJIIIIW BI DCI JIJTE 3 a Iii _ I 1 1 1 1 l i fi i 1 UUU UUU UUU UUU UUU UUUY LIIE 4 LIIE 5 LIIE 8 LIIE 7 LIIE 8 LIIE 8 PART OF 847AI5C KEY Fig 10 831A1M MD B1M MD C MD CT MD CM or 2831A1M MD B1M MD C MD CT MD CM Telephone Set Key and Mounting Cord Arrangement Sheet 2 of 4 Page 20 ...

Page 21: ... 50 i l lifli l ii 1 i Cf IIi d IIi _ _ _ _ 1 e i _ A y 18 A T_il r I J 50 50 l i c IIi r t _ _ r r It r r I I Ill l i v V V i V Ill UUUY UUUY UUUY UUUY UUUY UIE 10 LIIE 11 LIIE 12 LIIE 18 LIIE 14 PNIT IF 11471115 KEY Fig 10 831A1M MD B1M MD C MD CT MD CM or 2831A1M MD BlM MD C MD CT MD CM Telephone Set Key and Mounting Cord Arrangement Sheet 3 of 4 Page 21 ...

Page 22: ...oc oc oc 1 0 i 1 1 s 0 I s ls l _ l j cl _ Iii c I J cl l I _ A 23 28 1 1114 ii r5 1 r r 1 j r 1 r 1 a I II II ii 1 v UUUY UUUY UUUY UUUY UUUY LDE 15 LIIE 18 UIE 17 LIIIE 18 UIE 18 PMT IF 847115 KEY Fig 10 831A1M MD B1M MD C MD CT MD CM or 2831A1M MD B1M MD C MD CT MD CM Telephone Set Key and Mounting Cord Arrangement Sheet 4 of 4 Page 22 ...

Page 23: ...FORE 50B TYPE PLUGS ARE CONNECTED 2 ON CURRENT SETS TIP AND RING ARE CO ON TO ALL PICK UP BUTTONS THROUGH INTERNAL MOUNTING CORD WIRING 3 BRASS STRAP ON TERMINAL BOARD CONNECTS TERMINALS 7 11 AND 15 AND 19 23 AND 26 B31A1M MD 2B31A1M MO AND B31B1M MD 2B31B1M MD TELEPHONE SETS ONLY 2S B31A1M MD AND 2B31A1M MD EARLY VERSION 0 ALL OTHER SETS Page 23 ...

Page 24: ...ORD JACK I W n j 0 K A I L1 OK L A iii 0 L2 f IlK liiKl 0 I IS Y A1 A IT S 81 0 8CA OR 8RA DIAL W W v W IT 10 T IICA I I 1 BL T IT P3 I I 7r F n Ill P4 PII SE c w e Ill 1 AA BL c T1 T ct B W 0 A e d IWI e C BA A R OK t Fig 11 Part of 831 OM MD or 831 FM Telephone Set Connections Page 24 ...

Page 25: ...IIDT 8E U8ED AI A FARE TEIIIDIAl 35AF3A DIAL 0 H4DU CORD HANDSET CORD JACK ISS 9 SECTION 503 702 lOl GISA IWIISET LINE SWITOI 101 l P q D K 0 T1 1 _ _ 1 4 K A 8 Y R1 i IRI R I 11 11 If Ill Ill Tf f j 0 Ff 0 ut II 1 1 il IAI PIB RINGER L Y 81 81 l i If IT i Ill lSI a1 c c d I A lit 0 111 L2f J 4 If I 8 1 A VI IA G Il d J VI t Fig 12 Porl of 283lDM MD or 283lFM Telephone Set Connections Page 25 ...

Page 26: ...0 0 IT W to P4 Y I 24 18 A lll IcG W T1 Bl B 1 8 llll E R 8 _A Y PART DF IIUITIJil aJlD 0110 87 81 i j l i c i g if If 81 Ill STRAP PART DF 647NI5 KEY Ill Ill Ill j l i l i c c c iE li Bl Ill IIK 111 17 111 IIK WI IT WI Fig 13 831DM MD or 2831DM MD Telephone Set Key and Mounting Cord Arrangement Sheet 1 of 4 Page 26 ...

Page 27: ...2 1 L L811 s 5 ISS 9 SECTION 503 702 101 PART IF IO WriMl aJil DIOOK 87 BL Ill W IWI II D R 8 i 8 8 8 R 0 IRI Y 3 2 I L LOll 8 5 l 3 2 I L L8 B 5 l S 2 I L LOll B 5 Fig 13 831DM MD or 2831DM MD Telephone Set Key and Mounting Cord Arrangement Sheet 2 of 4 Page 27 ...

Page 28: ... R R a R 8 IR 8 0 RIYI R IRI 10 iii iii iii iii S iii I 5 l 5 LaII 5 Lell 8 5 l LaII 5 LOI 8 2 1 fl fl8 8 a 2 1 L 8 2 1 l 3 2 1 l 8 2 1 l v J J I 1 v H l i v 1111 _YYYYYY I vi yyyyy_yyviyyyyyyv jkyyyyyy l vfAyyy_yYY y WUJ uuu rH uuu uuu rH uuurH RECALL LIIIE 7 LIIIE 8 LIIIE 8 LIIIE 10 PMT OF 847ADIIC KEY Fig 13 831DM MD or 2831DM MD Telephone Set Key and Mounting Cord Arrangement Sheet 3 of 4 Page...

Page 29: ...II ARE c CIJitDI TO All PICI LI III TT1IIII TIIIOUOH OOEMAL IIDUITIIII CORD WIRIIIJ f s c o LT BEIGE 3 i N P r P gi __ L L _ __ ___ Ci 6 ti eD 6 5 LOI 5 5 8 3 2 1 L 8 3 2 1 L LU 8 3 2 1 L LU h In v v v v 9 h h V V 1 lyyyyyy v ll yyyyyyv v yyyyyyvv yyyyyyvyt yyyyyy v uuu rH uuu uuu rH uuu uuu rH LIIE 11 LIIE 12 LIIE 13 18 LIIE 14 LIIE 15 18 PART IF 847AD5C KEY Fig 13 831DM MD or 2831DM MD Telephone...

Page 30: ... IBLI 18 18 23 28 0 0 0 0 10 10 27 1 2 7 0 BK BR II I if STRAP 17 BIHIK IT IWI c d W I IT W WI P4 IYI Iii 24 i 18 I A IIIII r 1 ltG 11 r 1 T1 IBLi ltG 101 T t 1041 10 W T 101 T illiTE Rl R l IYI IYI R J Cii ik6 ikO t _ r 05 0 5 L r 5 l LGII 5 L r 5 L LOI 3 2 1 L LG 6 3 2 1 L 6 3 2 1 L 6 3 2 1 L 6 3 2 1 f j V h l n V r tyV V V V 1 Jtf tr u u tfiJ PART OF 647AH5 K EY fig 14 831FM or 2831FM Telephone...

Page 31: ... ii L1r 5 8 J I i I I 3 2 1 L r f c G 9 K R 15 crl R iE6 Loll 5 8 ISS 9 SECTION 503 702 101 I CfSfi u f i li IIK Bl R Ill c C 3 2 1 L Loll s 5 i I I 5 0 ch J 6 J Ill D W IWI 11 D 0 R IG W G IRl Y 3 2 1 L LGI iuuuy uuuy uuriY3 uuuy uuuy LIE 5 LIE B IC1 IC2 IC3 I PAAI Of 647AH5 KEY Fig 14 831FM or 2831FM Telephone Set Key and Mounting Cord Arrangement Sheet 2 of 4 Page 31 ...

Page 32: ... WI OJ OJ T OJ OJ R RJ RJ T 111 111 BLI HI Eo T 181 GJ R R 3 IR SI R SJ 181 A YJ AI AJ 1 ii ii 6 0 ii Ci iii iCC i 6 iZS iii 1 I 4 3 5 6 2 1lr 5 8 3 2 1 L LOll B 5 3 2 Loll 6 5 l4 L s 5 l4 LOl 1 L 3 2 1 L 3 2 1 L I vuuu uuUY TUUtruuuy uuuy RECALL LilliE 7 LIIE 8 LIIE 9 LIIE 10 PART OF 647AL5C KfY Fig 14 831FM of 2831FM Telephone Set Key and Mounting Cord Arrangement Sheet 3 of 4 Page 32 ...

Page 33: ...E aJftJII TO All PICIUJ BUTTDIIS TIIIOUGH I l llllfTIIIl COAO 11IAIIIO Is s 3 2 1 l lG 6 5 T 3 2 1 l lGII 6 5 3 2 1 l lGf 8 5 l 4 3 2 l lG 6 5 4 3 2 1 l lGI hlt v hit h if til YYYYYY l YII YYYYYY l YYYYYY v yyyyyy _ s yyyyyyy v PART OF 847AU5C KEY Fig 14 831FM or 2831FM Telephone Set Key and Mounting Cord Arrangement Sheet 4 of 4 Page 33 33 Pages ...