Bell System Practices AT&T Plant Series Guide

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I
BELL SYSTEM PRACTICES
Plant Series
SECTION 501-410-101
Issue 2, March 1969
AT&TCo Standard
F-56659 Ahll) F-56660
TELEPHONE SET COMPONENTS
FOR INSTALLATION IN
CUSTOMER-OWNED HOUSINGS
IDENTIFICATION, INSTALLATION, CONNECTIONS, AND MAINTENANCE
1. GENERAL
1.01 This section is reissued to:
Update telephone set components
Include installation and connection information
on mounting and handset cords
Include modification of telephone set wiring
for use with lA1 or 1A2 KTS and 3-type
speakerphone
Include list of D-Kit of Parts for distributing
house modifications when customer-owned
housings and components require converting.
Since this reissue covers ageneral revision, arrows
ordinarily used to indicate changes have been
omitted.
1.02 Refer to Section 501-185-100 for alist of
D-Kit of Parts for distributing house
modifications when customer-owned housings and
components require converting.
2. IDENTIFICATION
PURPOSE
To provide agroup of standard components
for use in assembling and wiring an operative
telephone set in an accepted conforming
customer-owned antiquedecorator telephone
set housing. See 1.W and Part 3for other
housings.
ORDERING GUIDE
Set, Telephone,
Set, Telephone,
F-56659 (chrome dial)
F-56660 (gold dial)
\
(a) Replaceable Common Components
.components listed in legend for Fig. 1,
except network and line switch.
(b) Associated Apparatus or Equipment
(ordered separately)
.Cord, Mounting, D3BN-*, 5feet, 6inches
●cord ,“
(when
.Cord,
(when
Mounting, D4BJ-*, 5feet, 6inches
set is used with lA1 or 1A2 KTS)
Mounting, D1OR-*, 5feet, 6inches
set is used with lA1 or 1A2 KTS
and 3-type speakerphone)
.Cord, Handset, H4CJ-*, 4feet
*Add appropriate color suffix from Section
500-120-100.
(c) Optional Apparatus or Equipment (ordered
separately)
●Loudspeaker, 760A
●Transformer, 2012B
)
Speakerphone
.Transmitter, 666-type
●Unit, Control, 55-type
0American Telephone and Telegraph Company, 1969
Printed in U.S.A. Page 1

SECTION
LEGEND
FEATURES
.Standard
operative
assembled
1—CHASSIS ASSEMBLY
2 – PIA RINGER
3—LINE SWITCH
4—4010B NETWORK
5– U3 OR U1 (MD) RECEIVER
6—T1 TRANSMITTER UNIT
7– F-56661 DIAL (CHROME)–
F-56659TELEPHONE SET
F-56662DIAL (GOLD)–
F-56660TELEPHONE SET
UNIT
8— P-298106CARD HOLDER ASSEMBLY
9—P-121457SCREW (3)
10– P-22F047SPIDER AND LEAD ASSEMBLY
11—P-22F046CONNECTOR TERMINAL
AND LEAD ASSEMBLY
12– P-43A392SCREW (4)
13– P-483192
14—P-121932
15– P-46J534
16– P-46J532
17— P46J245
SLEEVING (2)
CONNECTOR ASSEMBLY (2)
LEAD ASSEMBLY (RED)
LEAD ASSEMBLY (BIACK)
LEAD ASSEMBLY tWHITE) (2)
Fig. 1—F-56659 or F-56660 Telephone Set
components which provide an
telephone circuit when properly .Location -desk, table, etc.
within an appropriate housing .Space requirements
.Components provide asingle line, rotary dial
telephone set
●Adjustable ringer volume controi
●May be modified for use in lA1 or 1A2 key
telephone and 3-type speakerphone systems
3. INSTALLATION
(a) Planning
●safety for yourself, customer, and maintenance
personnal
QDistance between associated equipment and
apparatus
●General appearance of installation
(b) installing telephone set components in
customer-owned telephone set housings
Conforming Telephone Set Housings
When acustomer requests the installation of
telephone set components in an antique decorator
Page 2

telephone set housing, determine if the
customer’s housing is an accepted conforming
housing. These housings carry astamp of
conformance on the bottom which read “This
Enclosure Conforms To Drawing B-696501,
F-56659 (Chrome) *Telephone Company
No. *“or “This Enclosure Conforms
TO Drawing B-696501, F-56660 (Gold) _*_
Telephone Company No. _*_”
*Name of reviewing telephone company and
number assigned by that telephone company
should be inserted.
Nonconforming Housings
Housings which do not carry the above stamp
of conformance on the bottom must be modified
by the local Western Electric Service Center
to accept standard Bell System Components.
Components and wiring removed by the
Western Electric Service Center should be
returned to the customer.
Customer-Owned and Maintained Components
.Housing or shell, including base (pan)
.Handset housing, handset Crad]e, and
transmitter and receiver caps
●Actuator or plungers
Note: Inspect the customer’s telephone set
components before accepting them for service.
Be sure he is aware of any missing or defective
components found.
Chassis Assembly
(1) Remove upper housing from base of
customer-owned shell.
(2) Obtain chassis assembly from group of
components.
(3) Position chassis on base of shell and ensure
that the ringer volume control is accessible
through opening on underside of base.
(4) Secure chassis to base using four P-43A392
screws.
1SS 2, SECTION 501-410-101
Dial and Dial Leads
(1) Obtain dial and four lead assemblies from
group of components.
(2) Connect Lead assemblies in accordance
with Table A,
TABLE A
DIAL LEAD INSTALLATION
I‘E’”
t-=:”’N’7:v=
COLOR
(w) RGN
(w) BK R
(R) GRR
(BK) BL F
Mounting Cord (ordered separately)
(1) Instail set end of appropriate mounting
cord, refer to ordering guide, route through
cord bracket and secure cord stay to base
(Fig 2).
(2) Connect leads of D3BN mounting cord to
appropriate network terminals or modify
set wiring and connect leads of D4BJ or D1OR
mounting cord in accordance with Table C.
Note: A4-conductor D4BJ mounting cord is
required when set is modified to provide A
lead control for use with lA1 or 1A2 KTS
and a10-conductor D1OR mounting cord when
used with lA1 or 1A2 KTS and 3-type
speakerphone.
Handset Cord (ordered separately)
(1) Install set end of H4CJ handset cord
through cord bracket, lay on top of mounting
cord (Fig. 2). Secure cord stay to base.
(2) Connect leads of handset cord to network
of set.
Page 3

SECTION 501-410-101
(3) Remove receiver and transmitter caps from
customer-owned handset. Insert handset
leads of cord through opening in handset,
guide two white leads through handset handle,
fasten to screws of U3 or U1 (MD) receiver
unit obtained from group of components.
(4) Place receiver unit in handset cavity and
replace receiver cap.
The transmitter unit shall not be in
contact with any conducting surface.
Transmitter cap and transmitter
clamping surfaces in contact with
the transmitter unit shall be made
of insulating material such as plastic
or rubber. Lacquer or paint shall not
be used to provide insulation.
(5) Obtain T1 transmitter unit, P-22F047
spider and lead assembly, and P-22F046
connector terminal and lead assembly from
group of components listed with Fig. 1.
(6) Position ringed portion of connector
terminal and lead assembly on transmitter
unit (Fig. 3).
(7) Snap spider and lead assembly onto center
button of transmitter unit (Fig. 3).
(8) Obtain two pieces of P-483192 sleeving
and two P-121932 connector assemblies
from group of components.
(9) Cut sleeving sufficiently in length to
completely insulate the connectors and
place sleeving on each lead extending from
transmitter unit.
(10) Pull the red and black leads of handset
cord through transmitter opening of
handset, using the connectors, connect the
red and black transmitter leads, respectively.
Insulate each connector with sleeving placed
on transmitter unit leads.
(11) Place transmitter unit in handset cavity
and replace transmitter cap.
(12) Fig. 3is atypical installation of agroup
of components instailed in acustomer+wned
antique telephone set housing.
line and Ringer
(1) These sets are furnished wired for individual
or bridged, ring, and tip party service.
With minor wiring changes, set can be used
for tip-party identification. Connections should
be made at asuitable connecting block. Table
Dshows line and ringer connections.
(2) The ringer volume control is blocked from
OFF position by afactory placed stopscrew.
To enable ringer cut-off feature, remove screw
through access hole in top of ringer gong.
Tape screw to chassis assembly or inside set
housing.
(3) To permanently silence ringer for all
classes of service, remove and move
volume control to OFF position. Replace
screw in normal position and tighten just
enough to prevent volume control movement.
Disconnection of Customer-Owned Telephone Set
Housings
(1) Disconnected Customer-owned telephone
set housings should be disabled by the
removal of the F-56659 or F-56660 telephone
set chassis.
4. CONNECTION INDEX
Table B—lA1 or 1A2 KTS and 3-Type
Speakerphone Conversion
Table C—Line and Ringer Connections
Fig. 4—F-56659 and F-56660 Telephone Set,
Connections
Fig. 5—F-56659 and F-56660 Telephone Set,
Wired For lA1 or 1A2 KTS and 3-Type
Speakerphone
Fig. 6—F-56659 and F-56660 Telephone Set -
Speakerphone Connections
5. MAINTENANCE
(a) Maintenance is limited to those components
installed as part of the telephone set group.
Maintenance of housing, finish, and other
customer-owned parts is the responsibility of
the customer.
Page 4

(b) The line switch and ne .~r!. ,we riv~. (1 to
the chassis assembly and ~t~ould not ~’
removed. If maintenance is required, rel)l~,
chassis assembly.
(c) Maintenance of the dials is the same as for
6-type rotary dials. Refer to Section
501-162-100.
(d) Refer to Section 501-259-101 for maintenance
of P1A ringer and Section 512-620-200 for
optional speakerphone components.
(e Refer to connection
locating and clearing figures as an aid in
trouble.
–i
1SS 2, SECTION 501-410-101
TABLE B
1Al OR 1A2 KTS AND 3-TYPE SPEAKERPHONE
CONVERSION (SEE NOTE)
CONNECT TO
NET. TERM.
REMOVE
MIRE OR LEAD COLOR FROM NET, SPEAKER.
TERM. IA1 OR PHONE
1A2 KTS WITH
IA IOR
1A2 KTS
Line (BR) cG G
Switch’b (w) Fcc
(s) AL2 -i
Ringer (R) KA A
(BK) GF F
MIW Cord or .
Equiv. KL1
Note: For lA1 or 1A2 KTS only, use D4BJ
mtg. cord. For lA1 or 1A2 KTS with speaker-
phone use D1OR mtg. cord, connect as shown in
Fig. 5.
*The telephone set may be dialed in the on-hook
condition with speakerphone option,
tUse D-161488 connector to connect (S) line
switch lead to LK lead of transmitter.
Page 5

,
SECTION 501-410-101
Fig. 2—lnstallotion of Mounting and Handset Cords
SPI
ASSE
CONNECTOR TERMINAt-
AND LEAD ASSEMBLY
TI TRANSMITTER
WIRING DETAIL
Fig. 3—Typicol Installation
1..1
of F-56659 or F-56660 Telephone Set in Antique Housing
Page 6

9
1SS 2, SECTION 501-410-101
4010~NETWORK
1,.. (R)
.,.
:,.:
......
,:
* * ,,:. *(BK) “:’ ~,...
... (Y)
:; .,,
NOTE :
MOUNTING ANO HANOSET COROS ARE
NOT FURNISHEO WITH TEL SETS ANO
MUST BE OROERED SEPARATELY.
*INSULATED ANO STORED
Fig. 4—F-56659 and F-56660 Telephone Set, Connections
Page 7

bi
.
SECTION 501-410-101
40106 NETWORK
PIA (BL-W) (EL–W) :P4
RINGER ... NOTES: ‘“
(BL) (s) (S -R)
***
lBK)
1. MOUNTING AND HANDSET CORDS ARE
NOT FURNISHED WITH TEL SETS AND
MuST BE OROEREO SEPARATELY
2IF ONLY “A” LEAD CONTROL 1S
REWIRED USE A04BJ MOUNTING
CORD. IF “A” LEAD PLUS SPEAKER-
PHONE IS REQUIRED uSE A
DIDR MOUNTING CORD.
3LEAVE (S) LINE SWITCH LEAD
TERMINATED AT L2 WHEN D4BJ
MOUNTING CORD IS USED.
*INSULATED AND STORED.
Fig. 5—F-56659 and F-56660 Telephone Set, Wired For 1Al or 1A2 KTS and 3-Type Speakerphone
Page 8

●
1SS 2, SECTION 501-410-101
[
TI(w-s) F
CONTROL UNIT TO KEY w0
2
i5A (MD) 554 *EQUIP RLI
55B (s-w)
28 28 10
0ra RI 4[BR-WI
vwI
19 19 I
mTI 5(W-BR) RR
0nw
5 5 II
0n n AG 6(w-o)
w1
A7(W-G)
TO KEY
21 4EQUIF? -
LnP3 8(W-EL) w
ww
w30 13
00aP4 9(BL-W) BB
12 12 2 TO KEY Al
0nnEQUIP Al 10 (G-W) L2
.
PLK 3(o-w)
36 36 36 ‘---+%-J t
TFI
0nn
0n0‘J
To 2012B
27 27 27 TF2 TRNSF \
(NOTES IANO 2) LEAO 44A MTG CORD TRMTR
OESIG CONN
BLOCK TI14 T7A 666A 666B
(NOTE 4)
LK 3(BK) (BK-0) II 8
ww
4 4 7 I I
0cl Ml n(BR-BL) (S-BK) 2
ww w 0
14 14 16
0M2 2
00. (w) [BK-S) 5 3
w
13 13 8
0nPI 4(BL) (BL-R) 4 2
www
2 2 17
0FI 5(Y) (G-Y) 10 7
c.
wuu
3 3 IB
Os7(R) (O-SK) e 5
0wuw
29 29 19
0mc. Al 8(G) (Y-o) 96
wwuw
24 24 30
R2FK
PMTG CORO 760A
34 34 LS PK
0n n (NOTE 3)!1SPI n9n(G) 0
33 33 2s
0c. n(NOTE 3) *SP2 10 (R)
wu0
NOTES:
IOUE TO L(MER ~TAGE RATING 201iA TRNSF SHOULO NOT BE
USE, TO POWER 55-TYPE CONTROL UNIT,
2. 00 NOT USE ANY GROUNOEOPOWERSUPPLY, SUCH AS THE 18V AC
TAP ON THE 101-7ypE POWER SUPPLY, TO POWER 55-TYPE CONTROL
UNIT. USE OF GROUNDEO POWER SUPPLY WILL AFFSCT OPE RATION
OF UNIT.
3. IFREOUCED LOUDSPEAKER VOLUME IS OESIRED, CONNECT SE?. LEAO
TO TERMINAL 24(55A) OR 3JX55B)
4. INSULATE ANO STORE UNUSED LEADS OF TI IACORO.
*55A CONTROL UNIT MOOI FIEO BY WESTERN ELECTRIC COMPANY.
tD- 1614138 CONNECTOR.
Fig. 6—F-56659 and F-56660 Telephone Set, Speakerphone Connections
Page 9

SECTION 501-410-101
TABLE C
LINE AND RINGER CONNECTIONS
r
INDIVIDUAL TIP PARTY
RING TIP PARTY
WIRE OR LEAD COLOR OR IDENT GRD
PARTY NO IDENT
BRIDGED GROUND 1Dam 16500
Line Wire RRRRR R
at Connecting GG* G* G* G* G*
Block Y Y Y Y Y Y
Mounting Cord RRRG* G:, G*
at Connecting GG* G* R R R
Block YG* Y Y Y Y
RK K K K K
Ringer Lead S-R ~~
1++
IB
at 401OB s*
Network It+Bt
i3K G~ G$ G~ G~ G]
*Connecting block terminal.
tInsulated and stored.
INetwork terminal.
~Page 10
10 Pages