BELL SYSTEM PRACTICES

Plant Series

SECTION 502-611-404

Issue 1, August 1970

AT&Wo Standard

SERVICE

1638- AND 1639-TYPE TELEPHONE SETS

1. GENERAL

1.01 This section contains connection informationfor 18- and 30-button telephone sets equipped

with 10-button TOUCH-TONEG dials, headset jacks

and used with station line concentrator. Connectioninformation for these sets was formerly containedin Section 502-636-413 which is hereby canceled.

1.02 Refer to the appropriate Reference sectionfor ordering and piece part information or

the section entitled 630-, 1630-, and 2630-SeriesTelephone Sets, Common Installation and MaintenanceInformation in Division 502.

1.o3 These sets are not intended for use with+type speakerphone systems.

2. CONNECTIONS

2.01 A 235A (MD) or B KTU is associated with

each 1638-type telephone set. A 236A (MD)or B KTU is associated with each 1639-type telephoneset. Because of the single common talking pair

and control lead patterns used in these sets, a lineconcentrator unit must be associated with eachtelephone set installed and cannot be shared, evenon a bridged stiation basis.

2.02 See SD-69499-01 (key telephone system, 6A,lA1 and 1A2 station line concentrators) and

ap]jropriate sections in Division 518 for connectionsto station line concentrators using 235- and 236-typekey telephone units.

2.03 When 400-type KTU’S are used as linecircuits, a 235B or 236B KTLT must be used

c)r ~ 2:j.; A or 236A KTU modified as shown in

I)ivision 518.

2.04 The P-90D033 Printed Wiring Board Assemblyused to provide a station busy lamp circuit

for 1638- and 1639-type telephone sets is intended

to mount in the 235- or 236-type line concentratorkey telephone unit associated with these sets.Connections to the telephone set are through theTA lead (Fig. 2 and 3). For connections to theprinted wiring board assembly, see section on stationline concentrators in Division 518 or refer to

SD-69580-01.

2.05 A 599B key may be used in the first keyposition to provide ringer or line cutoff

(Notes 5, 6, and 7, Fig. 2 or 3). When other usesare required they must be provided for by meansof an auxiliary relay separately mounted and

controlled by the turn key contacts since there areinsufficient mounting cord conductors to permitfull switching at the key.

K

~-R Some spade-tipped conductors org mounting cord leads are insulatedD with tubing which should be cut off

with electrician scissors or diagonalpliexs. Other conductors are insulatedwith stiffplastic pockets. Pinch openthe mouth to release the spade tips.

2.06 Because of insufficient leads from the firstmodule plug for use with a 599H key, the

supplemental hold feature cannot be used in thesesets.

2.07 To convert a key position from pickup(locking) to signal (nonlocking) remove the

screw detail P-1 OE837 entirely from the plungerat the key position to be converted. Make thenecessary wiring changes as shown in Table B.

Note: When converting keys in concentratortype telephone sets from locking to nonlocking,an insulating detail must be installed overthe key contacts associated with the operation

of the concentrator units. Refer to the sectionof modular keys in Division 512 for detailson installing the P-11E977 insulating detail.

c American Telephone and Telegraph Company, 1970

Printed in U.S.A. Page 1

TABLE A

P-90D197 POLARITY GUARD CONNECTIONS

LEAD I I REMOVE FROM I CONNECT TO

Strap on

Terminal Block( o-Y) c* s?

*Network terminal

~PoIarity guard terminal

Note: Polarity guards shall be installed when

specified by local instructions for end-to-end

signaling.

Page 2

P/O 2583 DIAL-———(BK) ‘

I tI

I a I (G)

/I

(o) [v-G]*

1

It.(0-BK)

-1

iST (v) [v-v]I M

lx .4 VA-e(BL)

I w) (I

[ (R)I

I(w)

I

Iy,z I (w) 5+ (BK) [S-BK]

LS(R) S-R L,t(w)

1

Iglf

(R-G)

II (BR-BK)

I FL

I(R-G) ‘~(BR-R)

v (BK-BR) ‘Nt(W-BR)I

I Iw

ab‘! ,

L._— —l

P/O 25Y3 OIAL~..—–(B K)’

I

I(G)

(0)1 *I

● . (0-BK)

iiII=z=z:

1 (EL)

IlxI ~>

I

II

I

III

I I (R)elv

I (w)I

1 ~ I (w)1

\ (R-G) Rt (6R_R) FL\/ (BK-EIR)

I

i––__-_l ‘rab (W-BR)

4 241A AMPLIFER— 4010B NETWORK

J LI

-—

I

F RLEGENO:

LS - LINE SWITCH

l+j (A) -517 HEAOSET JACK A

HS (B) -517 HEAOSET JACK BFL - FLASH KEY

* IN SULATEO ANO STOREO

1

t NETWORK TERM ~E~M~N~~O+ AMPLIFIER TERM ARE ON TERM

BOARO( ) CURRENT COLOR COOE

[ ] MO COLOR COOE

II

I

1I

I

I

;--

II——

Kt NIA RINGER 3 (R_BL)RRt ~ — BORBI’

%

m1600n 1000 n w

1-(S-R) (s)

i *(EL-R) R OR RI

(G) 4 (W-BL) TT

(0-BK)LS FL

[O-Y) 7 (w) [S-BR]Cto ,/ (G) [S-Y] B (W-BL) (BL-w) ~ (BL-W) TR

ed 1’ c’dw

I (BK-s)HS(B)

(s-EIK) I/.

23(S-W) TA

t

(o-w) HS(A)5 v (0-BK) [BL]

23 1

(6R) [s-G] LS(Y) [s-w] I (o-w) Al\ w

cb /

G3AR[BL) Bt (BL-BK) 6* (BK) HANOSET

w(R) HS(B’) ~l? (R) TRMTR

TOFIG,20R3

(w) 1

[w)RCVR

(R-G) 52- OR 53-TYPEHEAOSET

HS(A)

Fig. 1—1638- md 1639-Type Telephone Set, Connections

.

SECTION 502-611-404

Notes For Fig. 2 and 3:I. WHEN599 A,599B,657A OR 657B KEys ARf usco IN FIRST MODULE, HOLD KEy LAMp (6TH LAMP) MAY BE usco FOR A Miscellaneous

v15uAL SIGNAL. cONNCcT lNDIc ATED LCAO TO AN AVAILABLE LAMP GROUND. WHCN 598A OR 656A KEY IS USED IN FIRST MODULE,INDICATED LEAD IS CONNECTED TO GROUND ON TERMINAL 5 OF TBI.

2. WHEN 598A OR 656A KEY IS U*O IN FIRST MOCAJLE, INDICATEO LEAO IS CCNNECTCD TO TERMINAL A OF TB6 ON 1638-TYPE SETS ANDTERMINAL 1A OF TB6 ON 1639-TYPE SETS.

3. WHEN 598A OR 656A KEy IS USED IN THIRD MOOULC OF 1638-TYPE TELEPHONE SET, (V-S) LEAD IS CONNECTED TO TERMINAL 5 OF TB3.4, TO CONVERT A KEY pOSi TION FR12M PICKUP (LOCK ING)TO SIGNALING (NONLOCKING) REMOVE THE SCREW DfTAIL P- IOE837 ENTIRELY FRW

THE PLUNGER AT THE KEY POSITION TO BE CONVERTED. MAKE THE NECESSARY CHANGES AS SHOWN IN CONVERSION TABLE A. TO CONVERT AKEY POSITION FROM NONLOCKING TO LOCKING, INSERT SCREW Of TAIL P- IOE837. WHEN CONVERTING A KEY rOR SIGNALING, PLACE AP- II E977 INSULATING OETAIL OVER THE 2 KEY CONTACTS ADJACENT TO KEY PLUNGER.

5. CUTOFF OF THE INTERNAL RINGER CAN BE PRWIOED USING THE 599B OR 657B KEY IN FIRST MODULE. TRANSFER BI LEAD FROM TERMINAL3 OF TERMINAL BOARD (FIG. 1) TO TERMINAL 6 oF TBI (F IG.2 oR 3) TRANSFER (R) LEAD FRoM TERMINAL 5 OF TBI (FIG. 2 oR 3) ToTERMINAL VACATED BY BI LEAO.

6. WHEN 599B OR 657B KEY IS USEO IN FIRST MODULE TO PROVIDE CUTOFF, SWITCHING, OR TRANSFER FEATURES, TRANSFER (Y-BR) LEADFROM TERMINAL 6 OF TBI TO TERMINAL SG OF TBVI. THESE SERVICE FEATURES ARE PROVIDEO BY AN AUXILIARY RELAY (229B KTU OREQUIVALENT) SEPARATELY MOUNTED AND CONTROLLED BY THE TURNKEY CONTACTS THROUGH THE LG5, C, S,SI LEAD.

7. CONTACTS OF TURNKEY CONNECTED TO TERMINALS 9 AND II kSJST Bf ISOLATED FROM EACH OTHER WITH INSULATING DETAIL P-13E443(FURNISHED wITH599B OR 657B KEY) TO PREVENT lNTERFCREtKE WITH WORKING CIRCUITS.

8. THE TURNKEY LAMP CAN BE ILLUMINATED IN ACCORDANCE WITH, OR INDEPENDENT OF TURt#(EY OPERATION.9. WHEN THE 617A KEY IS REQUIRED AS A DUAL-PURPOSE KEY, THE BRASS STRAP BETWEEN THE S1 AND SG TERMINALS OF THE KEY MAY BE

REMOVED. USE MIW CORO OR EQUIVALENT TO CONNECT SI TERMINAL OF 617A TO A DISSIMILAR GROUND OR A NONGROUNDED CIRCUIT.Io. CONNECT lONs FOR THE sTATt ON 13uSy LAMp FEATuRE ARE pROvt DED ON THE 235-AND 236-TYpE KTU. REFER TO THE sEcTION ON LINE

CONCENTRATORS IN DIVISION 518 FOR THIS CONNECTION INFORMATION.Il. CORDS MA!UJFACTURED BEFORE APRIL 1968 HAVE SOME LEADS SOLDERED TO THE TB.

* LEADS ARE SPADE TIPPED, INSULATED ANO STORED.( ) CURRENT COLOR CODE.C 1 MD COLOR CODE.

Page 4

I

ST MC,D”L[ ,6,&T,p~ ~~T~

~-— –—-—

D50L MOUNTING CORD\, .

5990 OR6578 KEY

59eh OR656A KEY

PLUG 1 :,.

‘W’’c”%’m-lCHAININ6

Ald?u,Wkkl,

TD S14EET 2

,..

CGT+.4

and Cord and Cable Connections for 1638-Type

ii:ONN ~

>’ (BL-W) m

(W-SL!

>(o-w)

~

,mm.,&

TO FIG. 1— ,+ LEAD DESIGNATION

~~llj(

~ ; ~: TEL SYSTEMAPPARATUS CABINET

CON NECT(X+ 235- IAI. IA2

; ~ ~~I-I*: PLUG

--- 1,

26

(w-o)2

G-wI27

(W-G)3

(.m. w, 28

.1 T TTI A1. sG

-.

_&..

B’s+d

IBL-R)6

[OL- R) - RI(R-ELI

31R-EL 01

0-R , (O-RI 02

I (R-0)32

(R-O] ezl(G-RI

e(G-R) P-B

R-G)33

(R-

9(R-BRI

34IR-BRI LGI, C,S S1

S-R 10 {S-R L2(R-s)

35(R-S) LG2 C,s SI

[ BL-BK)II (EL-BK) ~ L

(BK-BL)36

[13K-BL) LG3CSSIIO-SIC - ‘K) L4,“- 0) ,..4,- ...

,“-0,,?A >12>>37>

(B K-L,

(G-M).“-, ., .,..

>13>(G-SK) [ L5

(BK-G)>38> (BK–G) ~ Y LG3, C,SSI

I I

(o-w) I

GLa

..

Telephone Sets (Sheet 1 of 3)

VI

2ND MODULE16313-TYPE SETS D50L MOUNTIN6 CORD

/

598A OR656A KEY

CONN‘$ PLUI

2

$

1+I ST 19 +--

PICKUPOR SIG

44+

KEY26

tST :7KEY E

LAMP%=-

2NDPICKUP

~

OR SIGKEY

8

?s3R0KEY !!s=

LAMP:=

4THPICKUPOR SIG

&

KEYII=

4THKEY

LAMP :? E9 +---

5THPICKUP %OR SIG

KEY34+10+

.7” 35+

.PICKUP

=$=

i:.OR SIG

KEY36 +12 +

6THKEY 7:$=

LAMP 43++30+

k+-24 +--.+25+-

20 +----

CHAININGSWITCH

45~

Q;=

Fig. 2—Module

FROM SHEET I

m :I:ml’

TB21oTE II

PLUG

J

(S-SKI1

(ml-s}>15>)40+

(OL-Y)I

[Y-6,>1s+)41 >

I(o-v)(Y-o)

)17>

>42+

(G-Y )I

(Y-G))1s+

+43+

(8R-YI I

(Y-BR)+ 19*

>44+

a

LEAD DESIGNATION

TEL SYSTEMA~RA71AS CABINET

XMNECTOR$4,mf

E

E2~

s-w)

q

Iw-sl

BR+)[BK-SR)

[S-SK)

:BK-S)

z

:

1

[BL-Y)

[Y-BL)

lo-Y!

[Y-o)

[G-Y)

[Y-G)

IBR-Y)

(Y-OR)

—

—

—.

—

Arrangements and

\ /TO SHEET 3

Cord and Cable Connections for 1638-Type Telephone Sets (Sheet 2 of 3)

IAI, IA2Ofl ~y

CIRCUITS

L7, S

LG7, C,S. SI

LS, S

L6e,c,s,sl

L9, SLGS, C, S, S1

LIO, S

LGIO,C,S, S1

,11, S

LGII,C, S,SI

L12, S

LG12,C,S, SI

. ..

3RD MODULE 1638-TYPE SET D50L MCAJNTINS CORD/ \ /

FRC+4 SHEET 2

/

1is $ : :“

617A KEY 598A OR D50L656A KEY

SI&--

REMSO#$ABpLE

( NQTE9)

SPADE -TIPPED j

KEY LEAD

G

—*

(WJTE 3)

TO~

1TiSXE

NOTE 11) (NOTE II

LEAO DESIGNATIONTEL SYSTEM

AP?ARATuS CABINET

cONNEcmfi;~CS;E

a

:

(s+) :

~

(Y-s)

(BL-V)

(v-6L)

(o-v)

(v-o)

:~

J

[G-v) -

(v-G)

(BR-VI

[v-BRI

( s-v)

( v-s)

235YPIKTL

——

—

—

—

IA I,IA2OR 6ALINE

CIRCUITS

L13, S

LG13,C, S,SI

L14, S

j. G14. C, S&l

L15, SLG15, C,S, SI

L16.S

LG16. C.S,31

L17, C,S

LG17, C, S,SI

L16,C, S,SI

Fig. 2—Module Arrangements and Cord and Cable Connections for 1638-Type Telephone

1ST MODULE 1639-TYPE SET ;:.,.;$ 0800 MOUNTING CORD LEAD DESIGNATIONWIm

599B OR657S KEY

CONN

- Ii

,...,,..>> D80B:;~>;...;:,:, PLUG I

% ~~ ‘ : -4”’ ““

G-w) ,.,:,”:,(s-w)

I ST 19

.:;?.:,,:.

,:: _l&l::;:+

(s-w)

+?+ -,.::.:

PICKUP,:<,~,:..

OR SIG44

<J ● ii

(w-G) ‘1:&$AAKi,,,KEY

,..

,H -JBR) :,: * .,.:I ST 27 ~R.ff, ,:

U

. ,:: SG

KEY 13:,,::? , ;..

LAMP 38(R-BR)

(G-w) .,.,.,,...

3 ,,.:,,:::

2 NO ..:..:.

PICKUP ,~:,.,

OR SIG 28(BR-W) f!

KEY (0) ,,.:,::::,:,:4

R-S1 :?*

2 ND 29,4 ~!

...

KEYLAMP

599A OR

657A KEYco

CONN

I STPICKUP

OR SIG

KEY

44

26

2

I ST 27

KEY 13LAMP 38

3

2NDPICKUPOR SIG 28

KEY

2 ND:9

KEY 14

LAMP 3s5

3 RO,,:$:::.,,,:?

PICKUP {JyfCR SIG

KEY306

3 RO 31

KEY Is

LAMP

4 THPICKUP iiOR SIG

KEY‘3;

4 TH 3:

KEY 16

LAMP

iTURN

KEY3410

TURN 35

KEY t7

LAMP 42II.:.,

:&+;W3612

I+OLO 37

d

d

3 RO 41 ‘

1 ~~ 1 I I I I 1ml . 1 1 :2:,,

j. ..../.. , , , ,

PICKUP d i$ ... .. . : II 1111 I:..,,,,..:;: .:..,:;

11 (OL-BK)7 .7.\ \ (BL-BK)I,,

..,,,~~ L3

W SIGKEY

4 THKEY

LAMP

m , ,.:..,,; 1 1 i I I I 1 I$;,,:

,,:w,: {u-

,

5 THPICKUP

(,2-s”,

KEY ~LAM P

,- “.. ,

(BK-G) )

:.,,:,* JKEY

%

la

-AMP 43

50

49HOLO * 4a

KEY 23

24

25

20

CHAINING b 45

‘w’TcH==l :I* .,,:: TO SH 2 .~;$, f$j

3-Module Arrangements and Cord and Cable ConnectionsFig. for 1639-Type Telephone Sets (Sheet 1 of 5)

2 ND MOOULE ** 080S MOUNTtNf3 CORD

FROM SH I,,,:598A OR

‘6A ‘Ey CONNI

I ST IsPICKUP 44OR SIG

KEY262

I ST 27

KEY 13

LAMP 383

2 NO :#

PICKUPOR SIG

KEY284

2 NO 29

KEY 14

LAMP 395

3 RD

%“’,

#jjs:.,:.PICKUP ..,<:;, +&?OR SIG 30 (s-w)

..” la , 111111nc ,

5Pi “i6

,“ ,(Y-SL) % *

3 RO 31 I 111111

KEY 15L-Y

LAMP(Y-BL)W-BR

4 TMPICKUP ; .5- . .. ,- ....

k 1 1 i 1 i I 1

1 1

11111u’! .,.

SW32

{3-WIKEY

d 4)8 @.R)

(Y-o] m*

4TH 33KEY 16 ,v -n, . r- —

i I I I

till

%!ii..?,..

OR SIG (w-s) ;.~,$

KEY34

(s) ~,,“10 *

5 TH 35(Y-G) %

KEY 17(G-Y)

LAMP (Y-G) :(w-lJR) ~

( )6 TH

:’

>.,,.:(:,

PICKUP : 4?

OR SIG S6(w-s) ‘u

KEY< I

12 (w) ..+,;,,

(R)*.:

6 TH 37 -.

II I I I I I 1 I

W46~:::@ ##

Fig. 3—Module Arrangements and

\ /TO SH 3

nsnNOTE 11’

3 7 PLuG I

+-

!:.,,,$;:,:;(O-Y]Y-o

1742

,1

>.

(G-Y)(Y-G) 18

43

=+

(sL-Y)(Y-BL

G

~

2

o-Y(Y-o)

G-Y)(Y-G)

g

x(OR-Y) 19

J

(sJr-Y)(Y-SIR)

44(Y- SR)

CONNECTORCA6LEA40A

WI I

LEAO DESIGNATION

TEL SYSTEMAPMRA7US CABINET

WI LG7, c, s, S(

~. L8““$?LG8, C, S, S1,:,.,,&‘##

=&==,&:.*,

$!$, ,.+&?..?,*,::.:,,.;

*

. ..‘ L

LGIOCS I

...

~:t,,.+;;:.:;,..,:;

@

~ Ll[.. L611.C. S, S1

$!!

~

+

.. .:,.*

LIZ.LG12CSSI

~

..j:

,::$:,”

K

Cord and Cable Connections for 1639-Type Telephone Sets (Sheet 2 of 5)&o

o

3 so iWJOULE ?&

i

1639- TYPE SET “’:DEOB NOUNTING CORD

y

’80’ $FI?OM SH 2

598A OR f \

636A KEY ~,-mN ,.. . PL:G~ n x

%wu e z z 3 ~

(s-w) m* m 0

=ia’

I 4 II ST 19

o-w) .W I

PICKUP 44(w-o) a

0R2JG (w-s) w“ .-” 26 ( ,-. . 4 I

.aR) 4I

2 NOPICKUP

& L!+::

B ,,-M, ~“OR SIG

KEY2.s4 (o)

w*

* “m 2s14 -“) !

3RD =-+1 ‘,

*I TIIII III

. ...PICKUP

ii%”

R..OR SIG

KEY : $+%,

4 TH S3W-BR

16(sR-w)

KEYLAMP 41

w-mG-w

!i TM &

I I I 1 1 I I 1 1

I I 1 I I I I II 1-

* 111111111I 1 I I 1 1 I I I

I [ I I 1 ! [ !

—

OR SIGKEY

5 THKEY

LAMP

6 THPICKUPOR SIG

KEY

6 TMKEY

LAMPiiili’(‘ ‘b‘ ‘.—.34 ( &10 *

35(w-s) @l.+) ~

1742

~ ‘:

1237la43

+--&(w-G t 1 1 1 1 1

HIE#4 (R-IA, s 1 1 1 1 1 I I 1 I

MIL

II

22=

RJJG 2( BL-w)(W-SL) >

>

~.,..

26

COWECTORCABLEA40A

dCCWN 2BL-w)w

+,.:~k,

.....

,;..:

:;~;:

....,:

.:,.,.,,;

(31L-RI?<:,

6

,’:”d

(OL-R)(R-8LI

31 (R-SL

(G-13K)13 G-BK

IBK-G)3B 6K-G

(BK-BR)39

(BK - BR)

1

?

LEAO DESIGNATION

TEL SYSTEM.APPARATUS CABINET

236-TYPE IAI, IA2 0R6AKTU LINE

CIRCUIT

L13❑ LG13. c, s. SI

L14m LG14, c, s. SI

g

L16?& LG16,C, S, S1

L17.,.....j LG17,c, s, .9,:,..;;:jji.:::.:.::*....,,t::if‘1,:,:;.::?$:<;;,...<.

‘~i~ LIB1. LG18, C, S, S1

CD

CH g

7

CAI :, ;

1

.,,!

Fig. 3—Module Arrangements and Cord and Cable Connections for 1639-Type Telephone Sets (Sheet 3 of 5)

.— — .— .—

4 TM MOWLE OBOE NWNTING Coso LEAO OESIGNATIOK

TEL SYSTEMAF?ARATUS MINETI

732

CONNECTORCABLE1639-TYPE SET i:

060E

53 I ++L.W) ...1ST 19 1 I

PICKUP (w-m-)44 f tm”-e, 11111111,.”.,..

236-TYPEKTU

IAI, IA2 OR 6huNE

CIRCUITSDR—”,

-. . 1111111

~

2s0 ~ % -PICKUP .,,..,

DK-G)-. ;1111111+

““ 3!”

Kt!Y

ala:” ~26 ++BL2

R- . . *I

I ST 27

KEY 133s

(RJg)LAMP

3 W-f Q) r- M=!C~N 2o-RR-O

WG 2[O-R)(R-o) >

L19, SLG19,q s, SI

(Q-RI 1

:’ d

(G-RIR-G

&(R-G)

I(BR-R) 9

(SW-R)R-BR)

34(R-SW)

W SIGKEY

=ia(

28++,4 s *

11111111, Mm 29 !n-$a L20. S

LG20. C, 3, S1

.,.,-”.

+R“ :,:,.:.:

OR SIG (SK-G)4I

g,,...*

KEY306

.,.:.

l&R) .:li* %,

3 RO 31,::,..

KEY IsBR-R) ;I~ I

LAMP 40 (R-BR) ?=

7 (w-s) @@ 4)

>;?:;~

●

L21, SLG21. c, s. SI

6 I

8::.$

f &

(S-R)~>,::,

10(S-R)

(R-S)35

(R+)

:l;~

,. ..:

16L-BK)II

(8L-8KI(6K-BL]

se>(BK-6U

4TH ~ yPICKUP . ,.:*

OR SIG

%/: ‘

32BK-G) $#

KEY e (BR)(R-S) ;N

* 11111114 TH 33

KEY 16 S-R) w I

LAMP 41(R-S) :... I I I I 1 I I

9~G-r... .%

L22, S

LG2 2. C,S. SI

‘Rv+=f:::..!, F$ *’IHIIH”N(%-”,

S=+!-iu &::: nI 1 I 1 I I I m

I

I I 1 I I I 1 A. .. . EL23, SLG2S, C, S, .W

-::. ~11< ‘“-w’ “iv 1 I I I I I I

(0-8Kl,11,~

120-6s)

(BK-0)37

(SK-o)

6 THPICKUP-- .,-

..-,CW.i ~i?( !!!’.., j,,

I 1 I I I I I Ssx 1I ,,,,..

L24. SLG24, C, 6, S1

*RESPARE

-!. ,

KEYLAMP

(SR-BK)14

:&

(BR-BK)

* (S-OK)15

(s-66)

*(12K-s)

40(6s-s)

CJ

1111111

Fig. 3—Module Arrangements and Cord and Cable

.— — .— .—

Connections for 1639-Type Telephone Sets (Sheet 4 of 5)

TABLE B — CONVERSION OF 1638- AND 1639-TYPE TELEPHONE SETS EQUIPPED WITH EVEN-COUNT COLORED-CODED CORDS

SERVICE FEATURE OPTIONS

KEYPOSITION

WZZERSIGNAL 6AAOO-ON 6A PUSHBUTTON LOCKEO-INLAMP RELEASE LINE PICKUP

CONNECT S1ORED DISCONNEC1 CONNECTS1OREO 016CONNECT CONNECTS1OREOSPAOE-TIPPEO DISCONNECT

SPAOE-TIPPEOCONNECTS1OREO MOVESPADE.

SPAOE-TIPPEO SPAOE-WPEO SPADE-TIPPEO SPAOE.lIPPEO16* LEAOINDICATEO LEAOINOICAIEO SPADE-lIPPEO lIPPEOLEAD

1636 LEAOINDICATED LEAOINOICATEO LEADINOICAIEOFROMA6SOCTD.

TOlERNINALA LEAO INOICATEO LEAO INOICATED lNDlC~E~F:#14NPE yEPf ~: ]:RA#l# TO TERMINAL FROM A6SOC TB.

iNSIJ\#j AND(163S) OR TO FROM A6SOC TB.

P6 0s n. VI. lNS:yol& ANO lNS:\:\; ANOTO TERMINAL

s%TERMINAL 1A S6 OF TB W. AVA;R;AMP

SETS (1639) OF TB. VI.

1 1 BL R-BR BL R-BR BL R-BR BL R-BR2 2 0 R-S - 0 R-S o R-S o R-S 1638. and 1639-3 3 G BK-BL G BK-BL G BK-BL G BK-BL Factory equipped4 4 BR BK-O BR BKnO BR BK-O BR BK-O5 5 s BK-G s BK-G s

and wiredBK-G s BK-G

1638-Not convertible.1638—Not convertible.

1638-Not convertible. 1638—Not convertible.Replace 599A or 657A key

1639—Connect W to term.1639—Connect W to term. with 598A or 656A key,

1639—Connect W to term. 1639—Connect W to term.6 6 SG of TB VI. Connect

SG of TB VI. ConnectPB of TB VI. Connect 1A of TB VI. Connect one of two spares (S-BK) connect ‘-R ‘o ‘“ai” ‘amp

one of two spares (S-BK) one of two spares (S-BK)(BK-S) from Plug 2 to

one of two spares (S-BK) (BK-S) from Plug 2 to grd. Connect W-O to term.

( BK-$.) from Plug 2 to (BK-S) from Plug 2 to term. 6 of TBI. Connect A (1638) or to term. 1Aterm. 6 of TBI. term. 6 of TBI. term, 6 of TBI. G-R to avail. lamp grd. (1639)of TBVI.

7 7 BL BK-BR BL BK-BR BL BK-BR BL BK-BR8 8 0 BK-S o BK-S o BK-S o BK-S9 9 G Y-BL G Y-BL G Y-BL G Y-BL

10 10 BR Y-o BR Y-o BR Y-o BR Y-o11 11 s Y-G s Y-G s Y-G s Y-G 1638 and 1639—12 12 w Y-BR w Y-BR -w Y-BR w Y-BR Factory equipped

13 BL W-BL BL W-BL BL W-BL BL ‘- W-BL14

and wiredo w-o o w-o o w-o o w-o

15 G W-G G W-G G W-G G W-G16 BR ‘W-BR BR W-BR BR W-BR BR W-BR17 s w-s s w-s s w-s s w-s

( 1633-Not18

(1638—Not 1638—Connect R-BL tow R-BL w R-BL w R-BL convertible. ) converbile. ) avail. lamp grd.

W (1639) R-BL (1639) 1639-Factory equipped19 BL - R-O BL R-O BL R-O BL R-O20 0 R-G o R-G o R-G o R-G21 G R-BR G R-BR G R-BR G R-BR22 BR R-S BR R-S BR R-S BR R-S23 s BK-BL s BK-BL s BK-BL s BK-BL 1639-Factory24 w BK-O w BK-O w BK-O w BK-O equipped

13 25 BL Y-s BL Y-s BL Y-s BL Y-s and wired14 26 0 V-BL o V-BL o V-BL o V-BL15 27 G v-o G v-o G v-o ~ G v-o16 28 BR V-G BR V-G BR V-G BR V-G17 29 s V-BR s V-BR s V-BR s V-BR18 30 w v-s w

——.—..—-V-s w v-s w v-s

Note : All pickup key positions converted to nonlocking for features in Table B must have P-11E977 insulating details placed over the two key contactsadjacent to the key plunger. Insulating details are furnished with the telephone set. Remove the P-1 OE837 screw detail entirely from the plunger at the keyposition to be converted.

5TH MOOULE 1639-TYPE SET#

DIS09 NOUNTINS -O

.,,,:,1

,.,.::.

q :Lz :,,~j$

,.,:,.,,.,<

Fig. 3—Module Arrangements and Cord and Cable

PLU6 I

(s-Y)(Y-s) >

(m-w(V-SL) )

(o-v)(v-o) [v-R]

)

(G-V)

(v-G)i

(ER-v)(v-sRI >

IS-v)(v-s) >

Connections for 1639-Type Telephone

ii

!J

Sets (Sheet 5 of 5)

LEAD DESIGNATIONTEL SYSTEM

APPARATUS CAFIINET

GS/l

.