INTERPHONE SYSTEM-1 A HOME 2752-TYPE TELEPHONE SETS CONNECTIONS AND MAINTENANCE

Transcription

1 BELL SYSTEM PRACTCES Plant Series SECTON ssue 2, November 1970 AT&TCo Standard NTERPHONE SYSTEM-1 A HOME 2752-TYPE TELEPHONE SETS CONNECTONS AND MANTENANCE 1. GENERAL 1.01 This section contains conversion and connection information for the 2752-type telephone set for use with 1A home interphone in conjunction with 3-type speakerphone. Connection information is also given for home interphone without speakerphone feature, but in such cases, it is recommended that the 2754-type telephone set be used This section is reissued to change section references in Operation with the 1A home interphone system requires installation of a 664B transmitter (ordered separately, Fig. 1). The loudspeaker circuit is controlled by the speakerphone control unit. With speakerphone OFF the speaker is connected to the interphone circuit; with speakerphone ON the speaker is transferred to the speakerphone circuit. The 3A cord reel shall be used when the telephone set is subjected to temperatures below 40 degrees F. The 3B cord reel shall be used when the telephone set is not subjected to temperatures below 40 degrees F. N2 TRANSMTTER UNT Fig Transmitter nstalled Table E-Conductor Assignments Using 75A Connecting Block or A25B Connector Cable Fig Type Telephone Set Connections, Wired For 1A Home nterphone Fig Type Telephone Set, Connections To 1A Home nterphone and 3-Type Speakerphone 2. CONNECTON NDEX 3. MANTENANCE Table A-Conversion of Telephone Set For 1A Home nterphone Table B-Pickup-Signal Key Conversion Table C-Ringer or Buzzer Connections Table D-Disconnecting Speakerphone Feature 3.01 Refer to Division 502 for maintenance information for the 2752-type telephone sets. Refer to Division 512 for home interphone system requirements and maintenance information Maintenance of the home interphone components of these sets (Fig. 1) is limited to replacement of defective units. American Telephone and Telepraph Company, 1970 Printed in U.S.A. Page 1 SSP 512-S10-4SO-i02_ l.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Apr 29, :16:04

2 SECTON TABLE A CONVERSON OF TELEPHONE SET FOR 1 A HOME NTERPHONE* TABLE B PCKUP-SGNAL KEY CONVERSON TEL SET LEADS REMOVE FROM CONNECT TO CONVERSON OPTONS Y-BR 635A2 KEY LEADS BR BR-BK (G-BK) 5R 1 Tel Set (l:lk-gl 5T 2 Plug (BR-Bl{) t DC2 Key (BR-BT() X 4T (W) :! TRMTR (R) 2 (Added) (S) DC! Convert 5th pickup key to signal (for door Hnswering). t Stored loeution. HPlPP(,)Sw M \[ 4T HPPSP(,)S,., M SG 4T HPSSP(,)S,., SG SG HPP S P(, )Sw an SG P(, )-Home intcrphone pickup ker S(A )-Door answering signal key Sec Note 2 Note&:. Convert 5th picku1> ker to signal (nonloeking) for door answering h_v removing the P-28E773 locking pin from plunger. 2. This option uses 2nd pickup key for private or intercommunicating line and 3rd key converted to signal -lt 4T TABLE C RNGER OR BUZZER CONNECTONS LEADS OPTON RNGER STRAP BUZZER R BK S-R ls BL R Bridged Ringer on any Line K T*.._ t t A to R* Common or Private Line Ringer or Buzzer With Capacitor Without Capacitor K A RT t t t RT t t t A to RR:j: A to RR:t: RR:j: RT Ringer Permanently Silenced K K t.._ t A to K *Terminal of line involved. tlnsulated and stored. :j:rr terminal on terminal board. Connect buzzer in place of ringer using twisted pair station wire. Page 2 SSP i02_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Apr 29, :16:19

3 SS 2, SECTON TABLE D DSCONNECTNG SPEAKERPHONE FEATURE (See Note) TEL SET COMPONENT LEADS SPEAKERPHONE COMPONENT LEADS TEL SET PLUG DAL SWTCH ASSEMBLY PRNTED WRNG BOARD Conductor color (V-G) (G-V) (V-S) (V) (Y-BL) (BL-Y) (0-Y) (Y-O) (S-Y) (S-BK Disconnect from* Tl Rl AG 7 s Fl Pl M2 M2 Ml *Terminals on telephone set terminal board. Note: When speakerphone feature of set is not required but set is multipled with a set providing speakerphone operation, disconnect, insulate and store these leads to avoid interference with working circuits. f interference continues, disconnect leads at multipling point as near as possible to speakerphone control unit. Page 3 SSP 512-S10-4SO-i02_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Apr 29, :16:34

4 SECTON PART OF KS , L1 PLUG STATON susj 1 LEAD DESGNATON AND WRE COLOR PART EXCLUSON PA RNGER OF SWTCH TERMNAL (NOTE BOARD SL V-SR SL (Y-BR) g 44 --=------= *--"" "-=- Tl T R V-G) (V SR (SR V) Tl " o 7 (OJ (V R (V SL [R] G R R SL V R A OR H V-01 1s2 (0-V 1: s 3 G OR SG R OR Rl SR Y (S Y (O W * R B4 SPEAKERPHONE [ 43 SYSTEM 18 HOME [1 3 NTERPHONE 14 SYS TEM 3 8 TO KTS 23 8 OR 81 SP2 SP Ml oc M2 A OR B R l Y S Y-G (G Y) G-SK SR SK SK G 10-W (G V) RT W.. (SK 52 Y-G LNE SWTCH Sl (W -S 4 (Y-S) m )1 (G-Y) * (OJ j BL kj EMS 0 2 * R (.1 S (Y b Q PMS (G d EM 3 T 6 OC2 OC er BK 9 S6 S-R S-SK Q 0 EB4 (S) r LOUDSPEAKER - " l-1-t -.,,--! SK BL W 6648 J101 TRMTR (NOTE 2) f-;cket.. S) (SK (SR W [W] BK W SL (RJ (V J TO SH 2 TO SH 3 16 SPEAKERPHONE SYSTEM Fl -. s M2 1. P i Ml BL Y Y BL S -V 10-Y (Y-O) Fl s M2 P Ml l f (SL-Y) Y SL W W (Y-O) 10-Y S Y S-BK OFF ON t::, (SL-W l G KEY AND VOLUME CONTROL [ ls 12 ls (V) 10 () 14 (BL-W) 1 3 GJ PART OF TERMNAL BOARD 1 l ;;-; h f -L J 1 CO- TRANSMTTER AND AMPLFER ---< G Fig Type Telephone Set Connections (Sheet 1 of 3) Page 4 BSP i02_ JP& Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Apr 29, :16:48

5 (Y-BRJ (OJ V! (R) [\}j 2L2 BKJ ll L SS 2, SECTON G3K HANDSET 40OD NETWORK 35C3A DAL 3-TYPE CORD REEL (NOTE 3) w [R) [W) (R) (Rl (Rl TO s,, _._.,.":J" r ,J j{ ri"v; r-+----,l u -4 #t k.r.:-- F ; &; l R G v t w 1 e TO SH [W) (BK) CORD REEL U!!! ::ac (!)--a:: - i :J -o- RCVR, TRMTR!!. S) (BK) BR) W [W) (BK) (W- BL) RJ NOTES:. REFER TO APPROPRATE SECTON N DVSON 502 FOR EXCLUSON SWTCH CONNECTONS F REQURED. Z. CONNECT 6648 TRANSMTTER (ORDERED SEPARATELY} AS SHOWN N TABL E A. 3. ( ] DENOTES 3A CORD REEL LEAD COLORS. ( ) DENOTES 38 CORD REEL LEAD COLORS. * NSULATED AND STORED t NOT USED N HOME NTERPHONE SYSTEM 0 TERMNAL WTH SCREW Q TERMNAL WTHOUT SCREW Fig Type Telephone Set Connections (Sheet 2 of 3) Page 5 BSP i02_ QS.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Apr 29, :17:06

6 ... SECTON PART OF K$ 16671, Lt PLUG LEAD DESGNATON AND W RE COLOR 6 3 5A2 KEY SPEAKER PHONE 50 SYSTEM t HOLD KEY H LNE LNE AND 2 CRCUT SGNAL ll A OR H t W -0) H :1- o J - t-7 " "..J " 2 1ST LNE PCKUP KEY )----- P) --i@i f L G- W --j j ----f G -- - W W G J LG tw-gl hlw %t1 R (BA - Wl }]!i 2R tbr-wl 2ND LNE PCKUP KEY )---- P LNE AND 3 SGNAL 32 CRCUT 1 2R ts - Rl lffu 4R (5-Rl 1 :== ==:H: : i == ========== ::=::= K ) *.lj -1 2T R :_ -.::l:" : ) ii! l f :(")-<o - L - G >---,---.-,vi\ PHONE r;:;":fm " ffl :tii! l f --- X-<:"O::! --._ ---S)-" f--7 3 N.; (;CKUP 36 2 BK - Bll ):;):: 4 H (BK-Bl HOME 12 NTER- 37 SYSTEM PHONE lki OR,..,_ G-BK ;. :.... l.."...» ihj.... l 6 t.. L4 0 O LG4!.@ rv [4 5T m:j {BR 3 --t - BKl mg sw (BK-BR) tlm 5H (BK BR) : ---ll fffi!j!-- : ---"-" "s"-_ "" ","----ll j,*:j; <0> ,"s""- -.=.,-----?) o, 4 J c L df (BK S) PM (BK-Sl - G ---ii :e;-- t " ; _, " : "" :-----ii HU ;:*: l--l, _, " ; "- ; J G 4, s Fig Type Telephane Connectians (Sheet 3 af 3) Page 6 SSP 512-S10-4SO-i02_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Apr 29, :17:22

7 SS 2, SECTON PART OF 050AA MTG cooo PART OF 70A CONN BlOCK 20 : : :=:], NSDE WRE OR CABlE NOTE U " t "f PR! 1 {NOTE PR 3) li 11!., A COHT ROL UN T 2ft 2T oc 5W Ml " {NOTE 3) rw QUAD 730A RECEVER (DOOR ANSWER UNT) 558 CONTROL UNT NOTE 5) 55A* CONTROL UNT CONNECT TO A OR LOCAL GR N (NO 4 1.!! t ,. 47 H,. J PR ADD STRAPS M 1-.,=i-,_,.:...., 53 {NO 2) - W PR A- 54 (Yl CBKJ 201ZA OR KS W PR TRNSF P ::l "[;j" 6" J TRNSF CPOWER) NOTE 5) NOTts:. NTERCONNECTONS MAY BE MADE USNG AN A25B CONNECTOR CABlE WHEN THE 5/A AND 55-TYPE CONTROl UNTS ARE located AT THE KEY EQUPMENT. Z. CONNECT R2 4 AS SHOWN WHEN ONLY ON 130A RECEVER S USED. 3. SPEACER leads MUST BE CONNECTED AS SHOWN FOR COMMON SYSTEM USE. 4. MUST 8 CONNECTED TO A WHEN USED WTH /A Olt A2 KEY TELEPHONE SYSTEM. 5. F SPEAKERPHONE FEATURE S NOT PROVDED, CONNECT SPEAKER LEADS FROM!lA CONTROL UNT DRECT TO 75A CONNECTNG BLOCK TERMNALS 3!1 AND 36); DSREGARD ALL CONNECTONS SHOWN FOR 55-TYPE CONTROL UNT. (]) TERMNAL WTH SCREW 0 TERMNAL WTHOUT * THE 55A CONTROL UNT MUST BE MODFED FOR USE WTH THE TOUCH-TONE DAL EQUPPED SETS. MODFED UNTS ARE DENTFED BY AN ASTERSK FOLLOWNG THE CODE. Fig Type Telephone Set, Connections to 1A Home lnterphone ond 3-Type Speakerphone Page 7 BSP S i02_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Apr 29, :17:40

8 SECTON TABLE E CONDUCTOR ASSGNMENTS USNG 75A CONNECTNG BLOCK OR A25B CONNECTOR CABLE TELEPHONE SET A2SB CONNECTOR CABLE OR 7SA CONNECTNG CONNECTONS DSOAA-3 MOUNTNG CORD* BLOCK LEAD PLUG TEL SET PAR CONNECTOR CONDUCTOR TERMNAL lyj CABLE DESG. PN NO. TERMNAL NO. PN NO. COLOR NO. CONDUCTOR T 2li T 26 1\"-BL l W-BL H H BL-\\ 2 BL-\\" 1\ nr 1l 27 lll 27 W-0 :! \V-0 2 A nr B 2 H 2 0-\V 2 0-\V L(:J 28 (llt Ll :l (l)t :! O-W (j G-\\- T 2H 2T 29 \V-BR 7 W-BR 4 R 4 21l 4 BR-\\ 8 BR-W A, -1, or S :10 2l 5 :!0 \\"-8 9 W-S :l 28 W-C 5 W-G B.5 t 5 S-\\ 10 S-\Y LG2 :ll (2lt :ll R-BL R-RL 6 L2 li (2)t 6 BirR 12 BL-R T :l2 :n :32 R-0 13 R-0 i R 7 :m i 0-lt 14 0-R A, H, or S :J:l :lh R-G 15 lt-g 8 ll 8 t 8 C-R 16 C-t LO:l (:llt 3 ll-blt 17 R-Bil u L:l! (:l)t!) Bll-ll l8 BR-R 2T :!5 n 35 H-S (!) R-S 10 2H 10.m 10 S-ll 20 S-R None :!6 411 Sparo t BL-BK 22 BL-BK None :li (-l)t :!7 BK-0 23 llk-0 12 None 12 (l)t 12 0-BK 2-l 0-BK :18 lll-g 25 BK-C 13 ll J :l U-HR 26 G-llK :l!j 5H 3!) UK-t 27 HK-BR 14 DC 1-l OC2 1-l BR-BK 28 Bit-lK S\\" :H BK-BL 21 BK-BL NonP.jl) (5)t,ll BK-S 2U BK-S 15 Non< 15 l!i H-BK 30 S-BK s 41 s -ll Y-BL 31 Y-BL 16 Fl lfi Fl i B!,-Y :!2 BL-Y 42 \ 42 :J.l Y-U li P i 17 0-Y :H 0-Y Sl2 t:l S2 -l:l Y-G Y-G 18 SP 18 H 18 G-Y :lu 0-Y BL H UL Y BR 19 G or SO 1!1 SG!) BH-Y as Bll-Y B or H -15 RT Y-S :J!) Y-S 20 R or ll 20 RR 20 S-Y -lo S-Y T 46 ET -lti V-BL -ll V-BL 2 1 R 21 EH 2 1 BL-V 42 BL-V A or Ell -li V-0-13 V-0 22 B 22 EB 22 0-V H 0-V T -18 Tl 48 V-G 45 V-G 2:3 H. 2:! Rl 2:3 G-V -16 G-V T 4n s.j!) V-BR -17 V-BR 24 m 24 i 24 BR-V -18 BR-V At: 50 A<: 50 V-S 4!1 V-S :\-V 50 S-V 47 (5) t Y-J 44 Y-llR Terminl1t< spt de-tipped c ondurtors of 050AA-:J mounting cord on the 75A connecting blork " indicated. t Numhers in parentheses denotp c onnprtions to LG and. terminals of key plugs as follows : ()-Blue, (2)-0range, (:J)-Green, (4)-Brown, (:i)-slate. t Tnsulated and stored :l7 Page 8 8 Pages BSP i02_ jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Apr 29, :17:54