BELL SYSTEM Plant Series PRACTCES SECTON 502-67-40 ssue, December 970 AT&TCo Standard SERVCE 66-TYPE TELEPHONE SETS. GENERAL 66A3 the appropriate key must be separately ordered and installed. For ordering and installing.0 This section provides connection information information, refer to appropriate Reference section for the 66-type (MD) telephone sets. This in Division 502. Speakerphone connections are information was formerly found in Section 502-66-0. shown in Division 52. which will be canceled..o2 These sets are supplied factory-wired as.03 When replacing keys, remove and discard 66A only. For conversion to 66A2 or any P-OE865 wire clips found in place. A PCKUP-SGNAL KEY CONVERSON, 66 Al TELEPHONE SET 657A OR 599A KEY LEADS CONVERSON OPTONS (s-w) (GR) (BL-BK) (BR-BK) (BR.W) HP PPPP A2 A2 A2 A2 HP PPPS A2 A2 A2 SG HP PPSS A2 A2 SG SG HP PSSS A2 SG SG SG HP PPP*S* A2 A2 A2 HP PP*P*S* A2 A2 HP P* P* P*s* A2 Note: All line key positions as furnished are pickup keys. To convert from pickup (locking) to signal (non locking) remove the P- OE837 screw from the plunger at the key position being converted. * These arrangements are used on private or intercommunicating lines with a common signal key. @ American Telephone and Telegraph Company, 970 Printed in U.S.A. Page
SECTON 502-67-40 D50K MTG CORD 66 Al TEL SET 66A2 TEL SET 66A3 TEL SET 657AOR 599A KEY 656 AOR 598A KEY 657BOR 599B KEY Pu Pu Pu \ ) n > \ T() (W-BL ) \/ v /-, v 26> 2:< R(2) (BR-w) 26> v \, >3 v T(2) > () > (W-SR) 3> >28> v 4) w 2:>./ t;, ~< R(3) 28> \,,, ~;{ T(3) :;:: ; >5 4) 5> \, 5)././ u >30> v R(4) (S-R) /. 4) 30>,, 30>,. 4t \/ v w 0 <T(4) )7 4) 7) 4 7) (R-S) \ 4 \/ >32> () b 32) 4) \, ;: <R(S) (G-BK ) 32) ( v v )9> /. <) 9) (6K-G) >34> \/,, i 34> ;$(; ) 3: (OL-y) b ( EL-Y) * > > > 4 <T(6) (y-0l ) > 36> 36> u 36 TB T( Y-BL) * (BL-V ) v v 2 (BZ 9 44 0 9 44 9 44 2 46< BZ (v-el) ~ : ; B (NOTE 7) (R)... J+. _ T..._ (G (V-G) 48< + V-G (G-V ) G-v 23< A-H- S-S (w-o ) 27( (s-w) * 5<f3 A-H-S-S (w- s ) 30 8<B A-H-S-S (:::) * 33<0 (6 L-BK) * : A-H-S-S (6K-BL ) 36 4< B (6R-f3K) * A-H-S-S (5K-6R ) 39< (o-y) 7<6 42< A-H-S-S (Y-o) * (o-v ) 22< (v-o) 47 < BL-LS (Y-BR) (NoTE 6) 44< ~G (BR-Y) 9< (v-s ) A 50< G. H ~48< W-G) % (o-w) 2 27 >+< 2 (s-w) 29 >*<4 ~,> ~ <6 (G-R) 33~8 (OL-f3K ) = TB (BK-BL) H ;~y 24 25 : +23 (G-w) =~;~ ;L!OADtL : ~ $=;~; Al-B (o-w) 4W LS (s-w) GA R NGR 2 b (NOTES 4 At4D 5) (s-v) ~ LK (s 25< K a B-al (Y-s) 45< R-R (s-y) 20< $uuj-u L(l) (G-W) 3< (W-G] 28< G L(2) xa~ (BL-RJ 6< (R-BL) 3 < G ;::~ L(3) (BR-R) 9< (R-84?) 34< G L(4) (0-BK] x~ 2 ( >6> (BK-0) 37< G < L(5) [s-bk) >4) s ) (OK S) 40< G L(6) (G-Yl ~4 (G-Y) 8< (Y-G) X3 (Y-G) 43< G w 8 Fig. -66 -Type (MD) Telephone Set, Connections (Sheet of 2) Page 2
SS, SECTON S02-67-40 ( (S-BR ) DAL lm START u \ n DAL STOP LS 2T (S-6R ) ~ ~ (s-y) w n (w (S-R) D(w). ON LS ; G3-TYPE (8C DAL) HANDSET (~) (S-FM ) RCVR,,, HOME v (R) DP (40A DAL ) ) ( PULSE (40A DAL) -l RELAY 6V (G-G ) G (R)? r (G-V ) ~ct (R-R) 4 TT S \ (8!~AL) (BL) (G). Q 400-TYPS NETW2RK ~ L --- )4s 0~ 29 85A NETWORK GN NOTES:. VHfN 6TH LAMP S RCWJ RED N 66 Al OR 66A3 TELEPHON[ SCTS, TERMNATE (Y-G) ON TERMNAL 3 AND (G-Y) ON TERMNAL 4 OF TB2. THESX LEADS ARE TERMNATED N THE 66A2 TELEPHONE SET. EQUP KEY WTH PROPfR LAMP AND CONNECT ASSOCATE LEAOS AT EW PNENT OR OSTRBUT ON TERMNAL AS REW RfD. 2. SET S SHOP WREO FOR USE WTH 3-TYPE SPEAKERPHONE. A 49A AOAPTER MAY BE REQUREO FOR CONNECTON TO SPEAKERPHONECONTROL UNT. A KS-809, L2 OR KS-204 9, L 6UZZER MAY BE NSTALLEO. USE S2 AND BZ LEADS TO CONNECT TO EWPMENT. 3. 4. 5. 6. 7. 8. *- t- s- w- f CAPACTCh? S NOT REQURED N R ffier CRCUT, MOVE (R) RNGER LEAO TO TERMNAL A OF NETWORK. TO SLENCE RNGER pert.fanently CONNECT (BK ) RNGER LEAD TO K OF NETWORK. WHEN 656A OF 598A KEY S PRov DEO AOO strap BETWEEN KEy TERMNALS A AND A2. THEsE LEADs c0nnec7 TO (6R-BK) AND (o-y) LEAOS TERMNATED ON A2. LNE SWTCH SEQUENCE: bc- MAKES de- MAKES ab- BREAKS fg - BREAKS NSULATED AND STORED DP. DAL PULSE CONTACTS TERMNAL ON NETw3RK, UNOESGNATEO H- HOLO KEY TERMNALS ARE ON TB2 LS- LNE SWTCH TERMNAL ON TB ON- DAL OFF-NORMAL CONTACTS TERNNAL ON 40A OAL PU- PCKUP TB- TURNBUTTON (CUTOFF) Fig. ~-lype (MD) Telephone Set, Connections (Sheet 2 of 2) Page 3
SECTON 502-67-40 2< 25< Al (o-w) LK (s-v) LK 8L (Y-BR) BL 44 < (s) (Y-Y) @ ~ a KS-5724, L v (0-0)# ~W (S-G) C ; - (s-w) 4 n OODf T LS o *@ { A (G-w) > ) LS (40A OAL) ~< 23 + 24+25-Y (A) WTHOU HOLD 2< 25< Al (o-w) Al LK (s-v ) LK P Q BL BL (Y-BR) 44< n (s) (Y-Y) 50 < AG (v-s) * < (o 0)*,= (S-G) a- - KS-5724, L r n c.<b (s-w) 4W > DODE LS @ q @ < 4 LS (40 AOAL A ~( 23+? < SP (o-y) # (NOTE) u (W-G)+ 48 504 %< 49 (s-ok) * (B)wTH HOLD NOTE: USE D-6488 CONNECTOR % - NSULATEO AND STORED * - LEADS NVOLVED N MODFCATON W - TERMNALS ON 40A OAL, UNDESGNATED TERMNALS ARE ON TB2 H - HOLO KEY LS - LNE SWTCH @- ADD strap when 656AoR S98A KEY S FURNSHED @-Without BUSY LAMP o- WTH BUSY LAMP Fig. 2 Al or A2 KTS- Hold and/or Station Busy Lamp Modification Page 4
SS, SECTON 502-67-40 9< SG (BR-v ) G (Y-Y)* 4 T LS (40A OAL ) 3r m n (o-o) * @ (s-w) Ls \, (S-G) @ 25< LK (s-v) LK (s) w o bnc A 44< L (Y-BR) :J @@ 50< G (v-s) * * (BK-BL) $ 48 (G-W) $ * *5G 23 { A2 (W-G) $ 48 R() (EL-w) < > Pu > A ) 9 R (R)* m (S-BK)$ > 49 H (R) (NOTE) AR (s-y) * w El 50 WLSE RELAY (40A DAL ) (40AD; AL ) R(4) (S-R) 0 < )7 n ll 3 < R(5) (G-8K ) >9 u > 4 )., 4 c9 ST >( 6 < R(6) (BL-Y) > > A (0 AL START) (DAL STOP) (HOME) [ 23 < R() (G-V) Ct n (R-R ) NOTE: F 656A OR 598A K[Y S PROVDED ADO STRAP BETwEEN TERMNALS R AND R. DP - DAL WLSE CONTACTS H - HOLD KEY LS - LNE SWTCH PU - PCKUP KCY * - NSQLATCD AND STORED t - NET~K TfR&fl NAL, undesl GNATEo TERMlNALs ARE ON 762 $ - LEADS NVOLVED N MOOF CAT ON - TERMNAL ON 40A DAL x - WTHOUT BUSY LAMP 8y - wlth ~sy LAMp Fig. 3-66-Type (MD) Telephone Set Converted for A KTS--With or Without Busy Lomp or Speakerphone Poge 5
SECTON 502-67-40 B PCKUP-SGNAL KEY CONVERSON, 66 A2 TELEPHONE SET 656A OR 598A KEY LEADS CONVERSON OPTONS (s-w) (GR) (BL-BK) (BR.BK) (o-y) (R-S) PPPPPP A2 A2 A2 A2 A2 8 PPPPPS A2 A2 A2 A2 SG 8 PPPPSS A2 A2 A2 SG SG 8 PPPSSS A2 A2 SG SG SG 8 PPSSSS A2 SG SG SG SG 8 ppppp:ks* AZ A2 A2 8 A2 8 PPPP*P*S* A2 A2 8 8 A2 8 p p p* p* p::s. A2 8 8 8 A2 8 p p* p* p. p. S* 8 8 8 8 A2 8 Note: All line key positions as furnished are pickup keys. To convert from pickup (locking) to signal (nonlocking) remove the P- OE837 screw from the plunger at the key position being converted. * These arrangements are used on private or intercommunicating lines with a common signal key. Page 6
SS, SECTON 502-67-40 C PCKUP-SGNAL KEY CONVERSON, 66A3 TELEPHONE SET 657B OR 599B KEY LEADS CONVERSON OPTONS (s-w) (C&R) (BL-BK) (W.BR) (Y-BL) (BL-Y) (BR-BK) (O-Y) (R-S) HP PPPC AZ A2 A2 2 - t A2 A2 - HP PPSC A2 A2 SG 2 f t A2 A2 t HP PSSC A2 SG SG 2 + + A2 A2 f HP PP*S*C A2 2 A2 2 + t A2 A2 t HP P* P*S*C 2 2 A2 2 HP PPPC () A2 A2 A2 2 +? A2 A2 + t ~ t SG SG f HP PPPC (2) A2 A2 A2 2 TB2-S A of net. ~ - -i? Buzzer HP PPPC (3) A2 A2 A2 2 ~ ~ + Terminals ~ ~ J- HP PPPC (4) A2 A2 A2 2 + t t f Note: All line key positions as furnished are pickup keys. To convert from pickup (locking) to signal (nonlocking) remove the P- OE837 screw from the plunger at the key position being converted, * These arrangements are used on private or intercommunicating lines with a common signal key. t nsulate and store Remove mounting cord (S-Y) (Y-S) ieads, insulate and store. Move BK TB-3 to TB2-S. ringer lead from Turnbutton used to: () (2) (3) (4) Operate auxiliary relay [through 5th R and T (G-BK) (BK-G) pair]. Cutoff ringer in set. Cutoff buzzer in set. Cutoff external audible signal [connect 5th R and T (G-BK) (BK-G) cuit; connect 6th R and T (Y-BL) (BL-Y) pair to external signal]. pair to signal cir- Page 7
SECTON 502-67-40 D CONNECTONS TO 3-TYPE SPEAKERPHONE USNG 48A ADAPTER TERMNALS MTG 48A LEAD N SET CORD ADAPTER CORD DESG TERM. ON 55A CONTROL UNT A-BL V-S S-BK AG 5 LK s-v s-y LK * 2 V-BL Y-BK BZ 6 BL-V G-W BZ 7 0 V-BR s P3 2 9 BR-V BL-W P4 30 f V-G BK-W T 9 c $ G-V BK-BL R- 28 3+ Y-s G-Y B-B 8 R-W 9 Al o-w G-BK Al 2 (Note 2) o-w Al 2 (Note 2) Notes : For 3-type speakerphone component connections refer to section covering 3-type speakerphone system, connections, 660 telephone sets. 2: See Fig. 2 and 3. * Connect to BK or BK-O of 666-type? TB. Terminals on network. transmitter.
SS, SECTON 502-67-40 E CONNECTONS TO 3-TYPE SPEAKERPHONE USNG 49A ADAPTER TERMNALS MTG 49A ADAPTER LEAD N SET CORD TERMNALS DESG A-BL v-s 2A AG 5 LK s-v A LK * 0 V-BR 0A lp3\2 9 BR-V 9A P4 30 8A T 9 Ci G-V 7A R 28 3: Y-s 2A B-B 8 A% s-y A R-R 9 TERM. ON 55A CONTROL UNT Al o-w Al Al 2 (Note 2) SG BR-Y SG SG 2 (Note 2) V-BL 4B BZ6 2 BL-V 3B BZ 7 Notes : For 3-type speakerphone component connections refer to section covering 3-type speakerphone system, connections, 660 telephone sets. 2: See Fig. 2 and 3. * Connect to BK or BK-O of 666-type transmitter. -i TB. t Terminals on network. Page 9
t SECTON 502-67-40 F CONDUCTOR ASSGNMENTS USNG 66E-TYPE CONNECTOR BLOCK OR A25B CONNECTOR CABLE LEAD DESG MTG CORD OR PLUG OR 66E-TYPE TEL SET A25B CONN CABLE CONN TERM. (NOTE) PAR CONDUCTOR PN NO. COLOR NO. CONN CLP TERM. NO. BLOCK T 26 W-BL 26 R BL-W 2 A, H, S, or S TB2-7 w-o 27 3 Al or B 2 TB2-A o-w 2 4 LG 38 W-G 28 5 3 L 3 G-W 3 6 T 28 W-BR 29 7 4 3 BR-W 4 8, H, S, or S TB2-2 w-s 30 9 5 Spare or B * s-w 5 0 LG 39 R-BL 3 6 L2 i4 BL-R 6 2 T 30 R:O 32 3 7 R 5 O-R 7 4 A, H, S, or S TB2- R-G 33-5 8 Spare or B * G-R 8 6 LG 40 R-BR 34 7 9 L3 5 BR-R 9 8 T 32 R-S 35 9 0 R 7 S-R 0 20 A, H, S, or S TB2-2 BK-BL 36 2 Spare or B * BL-BK 22 LG 4 BK-O 37 23 2 L4 6 O-BK 2 24 T 34 3K-G 38 25 3 R 9 G-BK 3 26 A, H, S, or S TB2- BK-BR 39 27 4 Spare or B * BR-BK 4 28 LG 42 BK-S 40 29 5 L5 7 S-BK 5 30 T 36 Y-BL 4 3 6 R BL-Y 6 32 A, H, S, or S TB2-8 Y-o 42 33 7 Spare or B *< o-y 7 34 LG TB2-3 Y-G 43 35 8 L6 TB2-4 G-Y 8 36 BL or LS TB2-BL Y-BR 44 37 9 SG TB2-SG BR-Y 9 38 B or B TB-3 Y-s 45 39 20 R or R A of net s-y 20 40 Spare or BZ *. V-BL 46 4 2 Spare or BZ * BL-V 2 42 TB2-6 v-o 47 43 22 TB2-5 o-v 22 44 T TB- V-G 48 45 23 R C of net G-V 23 46 P3 TB2-0 V-BR 49 47 24 P4 TB2-9 BR-V 24 48 AG TB2-A v-s 50 49 25 LK TB2-LK s-v 25 50. N ote: Contacts of key plug unless otherwise noted. : nsulate and store. Page 0 0 Pages