AT&T BELL 2563HB User manual

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BELLSYSTEM PRACTICES
AT&TCo Standard SECTION 502-543-400
Issue 5, December 1980
SERVICE
2563HB, 2563HBM, AND 2563HBMS TELEPHONESET
MAINTENANCE AND CONNECTIONS
1. GENERAL
1.01 This section contains information for the
2563HB(MD),2563HBM(MD), and 2563HBMS
telephone sets equipped with headset jacks and
12-button TOUCH-TONE®dial for use with optional
operator's headset.
1.02 This section is reissued to:
• Add the 2563HBMS telephone set
• Show 2563HBM telephone set MD
• Add information on the D-181006 Kit of
Parts (contains an 840364376polarity guard
and installation instruction sheet), Table A.
2. MAINTENANCE
A. Replaceable Components
2.01 Field replaceable items are listed under
identification in the appropriate Reference
section in Division 502.
2.02 Maintenance of handsets and ringers is
outlined in sections covering these components.
B. Loose Card Retainers
2.03 The 812558039 (P-25E803) and 802695619
(P-269561) are nonadjustable card retainers.
The P-25E785 (MD) card retainer is replaced by
812558039 (P-25E803)..
2.04 If P-25E785 (MD) card retainer becomes
loose on the faceplate and the number card
or designation strip slips, they can be tightened
as follows.
(1) Remove faceplate from set.
(2) Remove card retainer from faceplate.
(3) Bend the four arms of the retainer so that
more pressure will be applied to the number
card and designation strip. The bends should
be made approximately 1/2-inch in from the tabs
on the ends of the arms and in the opposite
direction from the factory bent tabs.
(4) Install the card retainer on the faceplate
and insert the number card and designation
strip.
(5) Install faceplate on telephone set.
Note: If adjusting the arms of the retainer
does not result in sufficient holding power,
replace the card retainer.
C. Removing and Replacing Housing
2.05 Sets without exclusion.
(a) To remove housing, loosen captive screws
in base of set. Lift housing up and toward
front of set.
(b) To replace housing, guide lower front of
housing over pushbuttons, align housing with
base of set, and gently press housing into place.
Tighten captive screws in base of set.
2.06 Sets with exclusion.
(a) To remove housing, pull up exclusion plunger
to its operated position, loosen captive screws
in base of set, and lift housing up and toward
the front of set.
(b) To replace housing, guide lower front portion
of housing over pushbuttons, align housing
NOTICE
Not for use or disclosure outside the
Bell System except under written agreement
Printed in U.S.A. Page 1

SECTION502-543-400
EXCLUSION
SWITCH
Fig. 1-.2563HBMS Telephone Set With Polarity Guard Installed.
with base of set, and gently press housing m
place.
(c) Depress exclusion plunger. With slight
pressure it should snap into its unoperated
position.
(d) Operate exclusion plunger several times to
insure proper operation. Tighten captive
screws in base of set. ·
D. Exclusion Switch
2.07
Perform no field maintenance on exclusion
switch and plunger other than cleaning
contacts with a 265C tool.
Page 2
2.08
Replace set or exclusion switch assembly if
any of the following exclusion switch
requirements cannot be met.
(a) Exclusion plunger should remain in the
operated position when pulled up to the full
extent of its stroke.
(b) The plunger should return to the fully
depressed position when handset is replaced.
(c) With housing removed, normally closed
contacts of the exclusion switch should have
perceptible follow when operated manually.
(d) With housing removed, open contacts of the
exclusion switch should have minimum
separation of 1/64-inch; gauge by eye.

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Al
2 (
, BL
44,
Al
2
BL
44
SP
24
(G- BK) HS
(IIOt
l"'~:···•*,
@
(0-W)
18
LS
c
©
(Y-BR)
A. WIlHOOT
I
HOLD, WITH OR
WITHOUTBUSY
LAMP
(G-BK) HS
(BR)*
a
(0-W) (Y)
b (BR)t
18
(Y-BR)
LS
C
(BR-V)*
t
(0-BK)*
c::
.
©
@
N
~©
©
@
M (Y>* ©
8,
WITH
I
HOLD,WITH OR
H-HOLD KEY WITHOUT BUSY
LAMP
HS-HEADSET ON-OFF KEY
LS -
LINE SWITCH
@-
WITHOUT BUSY LAMP
(v-
WITH BUSY LAMP, USE 533K DIODE OR EQUIVALENT
t-usE 0·161488 CONNECTOR
:t-LEADS INVOLVED IN MODIFICATION
t
NOTE:
ALL TERMINALS ARE ON KEY TERMINAL
BOARD,
Fig. 2-2563HB (MD), 2563HBM, or 2563HBMS
Telephone
Set- 1A1
or
1
A2 KTS, I Hold
and/or Station Busy Lamp Modifications
E. Mounting Cords
2.09 Cords, designed for use with 636A key
assemblies, feature slotted wafer sections
for each line appearance. This allows easy
rearrangement of lines to pickup buttons.
No field maintenance should be
performed on the plug of plug-ended
mounting cords.
ISS 5, SECTION 502-543-400
(BR)
44 BL (Y-BR) (BR)
HS
C
19
b LS
a
(G-BK)
3 (S-Y) (BK)
FL
(R) N
13 14
H
d M
(0-BK)
LS HS
e
(S-R) 9 (Y)
ct
STATIONBUSYLAMP
MODIFICATION1AKTS
LEAD FROM TO
LINESWITCH (Y) 1B SG
(BR)
N
1
HEADSET (BR)
N
1
ON-OFFKEY (G-BK) 1B SG
FLASHKEY (R) 9
N
(0-BK) * M
HOLDKEY (y) M 9
*INSULATEDANDSTORED
tNETWORKTERMINAL.UNDESIGNATEDTERMINALSARE
ONKEYTERMINALBOARD
H - HOLDKEY
FL -
FLASHKEY
HS-
HEADSETON-OFFKEY
LS-
LINESWITCH
Fig.
3-2563HBM (MD), 2563HBM,
or
2563HBMS
Telephone Set Modified for 1A KTS Station
Busy, lamp
Page 3

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SECTION 502-543-400
F. lamps and Pushbuttons
2.10 Replace cracked. pushbuttons or collars.
Remove accumulated dirt or film from lamps,
collars, and pushbuttons with a water dampened
cloth. DO NOT USE SOL VENTS OF ANY
KIND. If cleaning does not correct binding of
pushbuttons, replace button and collar assembly.
2.11 To replace defective lamp.
(1) Lift lamp from socket with KS-6320 orange
stick.
(2) Align lamp contact surfaces when placing
new lamp in socket.
2.12 The button and collar assembly should be
carefully aligned to avoid interference with
removal or replacement of housing.
G. 636-Type Keys
2.13 Field maintenance of these keys consist of
cleaning contacts with a 265Ctool or adjusting
with a 363 tool.
2.14 Contact follow and separation is obtained
by using a 363 tool at a point adjacent to
contact spring pile-up. When adjusting springs-
(a) There should be a minimum spring clearance
of 1/64-inch between contact springs and
those parts of the key which do not make contact
with springs.
(b) Normally open contacts should make with
perceptible follow on locking keys before key
plunger assumes locked position.
2. 1
S
Replace set if the following requirements
cannot be met.
(a) When depressed locking plunger should, on
its downstroke, release any previously locked
plunger.
(b) When any pushbutton plunger is released
from its operated position, it should return
with a snap to its nonoperated position.
(c) An operated key plunger should not release
during downstroke of hold button.
Page 4
(d) An operated key plunger should release from
its operated position on the upstroke of the
hold button.
H. 241-Type Amplifier
2.
16 Used in telephone sets with headset jacks
to amplify the output of the headset
transmitter. NO FIELD MAINTENANCE SHOULD
BE ATTEMPTED ON 241-TYPE AMPLIFIER.
2.17 Replace the amplifier if it is suspected of
being defective (as evidenced by poor or no
transmission). When replacing, always use a 241B.
I. TOUCH-TONE Dial
2.18 Check line polarity if no tones are heard in
the receiver when a button is depressed.
The 35-type dial will function only
when the green dial lead is positive
(+)
and when the orange-black lead
is negative (-).
2.19 A dial hand test set connected to line
terminations can be used to test for defective
dials.
Do
not attempt repair of TOUCH-TONE
dials in the field. Replace defective
dials.
J.
Handsets
2.20 When special conditions exist the G3- and
G15-type handsets may be replaced by the
following:
• G6B (MD) or G6BM handset for impaired
hearing
• G7B (MD) or G7BM handset for weak speech
• G8B (MD) or G8BM handset for noisy
locations.
2.21
Refer to Section 501-211-102 for additional
information on these handsets.

TCI Library- http://www.telephonecollectors.info/
3. CONNECTIONS
3.01
These sets are factory-wired for use with
lAl, 1A2, •6A, or 6B• key telephone system
line circuits and are equipped with a 241-type
amplifier providing headset operation. A 52- or
53-type headset must be ordered separately.
3.02
A D-181006 Kit of Parts containing an
840364376 polarity guard and instruction
sheet should be used with these sets when specified
by local instruction to eliminate the affects of
battery and ground reversals encountered in
end-to-end signaling (Fig. 1 and Table A). Station
busy lamp indication, showing only that the handset
is off-hook or that the headset key is in the ON
position, can be provided for lAl, 1A2,
t6A,
or
6B• KTS by use of a 533K diode or equivalent•
which must be ordered separately and connected
as shown in Fig. 2. This connection will
not
indicate that a line pickup button is depressed.
Station busy for lA KTS is a wiring option shown
in Fig. 3.
3.03
The I hold feature of SD-69530-01 can be
incorporated with these sets when used with
lAl, 1A2, •6A, or 6B• KTS. Telephone set wiring
ISS 5, SECTION 502-543-400
changes are shown in Fig. 2 and key system
component requirements are shown in SD-69530-01.
3.04
Line exclusion feature can be provided by
installation of a D-179935Kit of Parts (ordered
separately). Connect as shown in Table
B.
3.05
The set ringer may be connected as a bridged
ringer on any line if desired (Note 4, Fig. 4,
5, and 6).
3.06
The 2563HB (MD), HBM (MD), and HEMS
telephone sets are factory-equipped with a
KS-20419Ll (10 volt ac only) buzzer.
3.07
The 2563HBM (MD) modular telephone set
(Fig. 5) is similar to the 2563HB (MD) set
(Fig. 4) except the G15A handset with its associated
H4DU cord and 616D jack is used in place of the
hard-wired G3A handset. The 2563HBMStelephone
set (Fig. 6) is similar to the 2563HBM (MD) set
except for a new line switch and headset jack
which breaks both the tip and ring sides of the
line. Previous line switch and headset jack
assemblies only broke the ring side of the line.
3.08
To convert the 2563-type telephone set keys
for signaling, refer to Table C.
840364376 POLARITY GUARD CONNECTIONS
(NOTE)
REMOVE CONNECT
FROM TO
POLARITY
NET NET GUARD
LEAD COLOR TERM. TERM. TERM.
Line
w
C
Switch
s
Headset
On-Off 8-R
C s
Key
Dial BK RR T
Polarity
w
C
Guard G RR
Note:
The 840364376 polarity guard comes in the D-181006
Kit of Parts with instruction sheet. The guard should be
installed on any surface having an area equivalent to the
adhesive backing.
Page 5

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SECTION 502-543-400
IAl·IA2
KTS LINE
CKT
IAl•IA2
KTS
LAMP
CKT
BUZZER
LEADS
IAI-IA2
KTS
,, R(I)
T( I )
R(2)
T(2)
R(3)
T(3)
R
(4)
T(4)
R(S)
T(S)
.....
.,,. L(I)
LG( I)
L(2)
LG(2)
L(3)
LG(3)
L(4)
LG(4)
L(S)
LG(S)
.....
["
BZI
,, Al·B
A·H
B
A·H
B
A·H·S·S1
B
A·H·S·SI
B
A•H·S•SI
B·BI
R·RI
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T
s
G
0
BU
LA
IG
RD
SY
MP
G·SG
BL
(NOTE
I)
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NO,
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14
,
13-
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PART
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(W·G).
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(BL·R) L2
9
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(R)
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(w)
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ut tel
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(BR)
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a
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34 (O•BK) L4
12~ (BK•O) LG
37 (S·BK) L!S
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40~
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{O•BK) *
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(V•BL)
(W-BL)
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(2)
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NOTE
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(O·W)
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TO
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EXCLUSION
TABLE B (W-0) SWITCH
(NOT!3l
(V•O)
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M
(w-o)
tH
27
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EXCLUDED
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33 (R•G) *
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I I ((BL•BK) *
36 (BK•BL) 4H
14 ((BR•BK)
*
(BK·BR) 5H
(BR)
(BR•BK)
39~----<2~-~-.....;:;;;;.;...:
45
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20 ~S-Y)
19
(BR·Y) (2)SG
!At
TIA
RINGER
Kt
44
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(RI
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(NOTES2 ,4,5, AND61
X
SPARE
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(NOTE I)
CLIP NO.
41 '
R _42
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A·H _43_
,,
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,
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Fig. 4-2563HB (MD) Telephone Set, Connections (Sheet 1 of 2)
Page 6

TCI Library- http://www.telephonecollectors.info/
ISS 5, SECTION 502-543-400
(0-81() (RI 4§
_J ,- PARTOF35-TYPEDIAL 7
I• I G3A-TYPE
r(_B_L_l_~...,'M.-- ... --~ ......-t--4~-(R_l ____ -vl...,..-----------(~R~l _______ --,HANOSET
(STRAP) (NOTE9)
Tt
at (S-81<) HS (S l 7 (II<)
6 7
5 (S-Vl 11
(NOTE9)
(Y-G) 51 (W-BR)
(R-Gl 5 (W·Gl (BK) 9 8 (G·Vl 8 (W)
(BK·Sl
II
12 FL HS
(BK)
LS
l<w-BLI (RI 2 (BL) (STRAP)
GNt (WI
(GI 0 2§ (BR)
RRt (BK)
I
I
I
I (Y-Gl 0 3§ (81()
L ________ _J
NOTES:
I, 66E·TYPECONNECTINGBLOCKSHOWN,MOUNTINGCORO
MAY8E PLUGGEDDIRECTLYINTO
CONNECTORCABLE,COROANOPIN NUMBERSroR CONNECTORCABLEARESAIi: AS
MOUNTINGCORO,
2, CONNECTIONSFORTIARINGERSHOWN.CONNECTIONSFORNIARINGERIDENTICALEXCEPTINSULATE
ANDSTORE(Sl AND(S·R) LEADS.
3, If EXCLUSIONFEATUREIS ADDED,CONNECTSWITCHLEADSPERTABLEB.
4. fOR BRIDGEDRINGERONANYLINECONNECT(R) RINGERLEADTOK or NETWORKANO
(BK) RINGERLEADTOTIP Of LINE INVOLVED.CONNECT(S) STRAPrROMA 01
NETWORKTORING01 LINE INVOLVED.
s. ,r CAPACITORIS NOTREQUIREDIN RINGERCIRCUIT,MOVE(R) RINGERLEADTOA or
THENETWORK.
6. TOSILENCERINGERREFERTOAPPROPRIATERINGERSECTIONINDIVISION
501
7. SETf.USTBEEQUIPPEDWITHA 2418 SERIESII AMPLIFIERIF EXCLUSIONFEATUREIS
ADDED.
8. IF HOLDPOSITlONLAMPIS REQUIREDUSESPAREPAIRANDTERM!NATEONLH
AOOLGTERMINALS. ,
9. INSETSMANUFACTUREDPRIORTOJULY1980 LEADSONTERMINALS1 MO 4
OF
2418 AMPLIFIERWEREREVERSED.WIREAMPLIFIERASSHOWNTOPREVENT
TELEPHONECIRCUITFROMOSCILLATING.
*· INSULATEDANOSTORED
t • NETWORKTERMINAL.UNOESIGNATE0TERMINALSAREONKEYTERMINALBOARD.
§ • 2418 AMPLIFIERTERMINAL
PU· PlCKUPKEY
H· HOLDKEY
LS· LINE SWITCH
HS- HEADSETON-Off KEY(640)
FL· FLASHKEY(6444)
4
0
St (Wl
(W)
RCVR
52-0R
53-TYPE
HEADSET
TRMTR
v :~
a:
NETWORK
2418 AMPLIFIER,SERIESII
(NOTE7 l
RCVR
Fig. 4-2563HB (MD) Telephone Set, Connections(Sheet 2 of 2)
Page 7

TCI Library- http://www.telephonecollectors.info/
SECTION 502-543-400
IAl·IA2
KTS LINE
CKT
IAl•IA2
KTS UMP
CKT
BUZZER
LEADS
IAl·IA2
KTS
" R( I )
(NOTE I)
CLIP NO,
2 - ,
-
PART(If 050N
MTGCORO
(BL·W)
636A KEY
PU
T( I )
-"-'----+-o-·'-c·-, 26 ~(W_·_B...;L);...__V>--~;---,
R(2) _ 8 _ / 4 (BR·W)
T(2) 7 (W-BR)
29 +-"---'---<.,.,...-~- ..
R(3)
T(3)
14 (O·R)
...:.:.>.:.<---+-o-<>-<, 7
....;..=.:..--+--<.>-1_3o-_-<'
32 ~(R;.:_·..;;O..;.)__
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R(4)
T(4)
R(5)
20 (S·R)
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- 19_ , 35 ~-----v'>--~-•
26 ' (G•BK)
- - ~ 13~---'-----G;>).---W-+-""""'
FL HS
9 (R) 14 13 (BK) 2 (S•R) Ct (0-BK I
(S·Y)
(G)
3~----------
LS (w)
d •
T(5)
' 25_
~
38 ~(BK;;;..,;·G::.;)'---~-~;..._ .....___ ..;;.G'-)-----------------(.tr-- Lit (G)
" L(I) 6 (W•G) LG
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5
LG(I) , 3~(G·W) LI
;___:.....:....-+-c:,--o--< 28
,
--'
L(2) 12
-
LG(2) -II
L(3) 18
--
LG(3) _ 17_
-
L(4) 24 _
-
LG(4) 23 -
L(5) _30 _
LG(5) _29
' --
'
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'
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,
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(BL·R) L2
6~
31~
9~R-R L3
(R-BR) LG
34 (0-BK) L4
12~
37 ~
(S·BK) L5
~:~
(G·BK) HS (BR)
4 3
LS (BR)
18 v,...(_Y)__________ -ui
b C
a
y H
(V·BL)
(W-BL)
(BL•V)
["
BZI
36 , (G·Y) 4 (BL)
---+-:o-3-5-c:,-...c~ ~: ~ ;~;~~:19LI
4 (o-w)
~ ~:) (NOTE8)
TO (BL•W)
TABLEB (W·O)
(NOTE3) (v-o)
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'"'""""''----+-<.:>--<>"--<., 2 (o-w)
N
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---+-o-_3--c-~ 27 ~(_w_-_o_)--~+---,1t------- .... 04-~
M EXCLU0£0 (o-v)
STATION
B 10
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(Y•BR)
B M
A•H•S•SI
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..;;;...----+-0-_1_6-c_.......c~8 ((G·R)
-----+--o,l...;5-o--<~ 33 (R·G)
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(S•R)
A·H·S•SI 39------<,'>-41-------------------
,
39 = ' (BR-BK)
B•BI 45 (Y-S) (BK)
R·RI
.... 20 @S·Y)
40
--(S) At
I~
(NOTE I)
CLIP NO,
41
--'
R 42
- - '
A·H _43_ ,
'
B 44_ ,
X 34 '
,,. ,
-'
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'
31_ ,
47
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SP 48_ ,
(O·BK) M
EXCLUSION
SWITCH
+
+
PARTOf' 050N
MTGCORD
46 ((V-BL) (2)ET
21 ((BL-VI (2)ER
47 ((V-Ol (2)EH
22 ( (O-Vl (2)EB
17 ((0-Y) M
42 ( (Y-0) *
41 ( (Y-BL) M
49 ( (V-BR) M
24 ((BR-VI M
T0 ......c.....c...c.--+--03-8-o--<~19 (BR·Y)
(STRAP)! sPARE 32 16 ((BL-YI *
sIG G·SG
GRO
BU
SY BL
LAMP
Page 8
--' 44 ((Y·BR)
05G
01 (Rl
TIA
RINGER
Kt ~300
OHMS
(NOTES2,4,~, ANO6)
Fig. 5-2563HBM Telephone Set, Connections (Sheet 1 of 2)
45
--
50
49
46
- -
,
'
,
'
,
,
'
,
'
48 ( (V-G) It
25 ( (S-V) It
5(1 ( (V-S) *
23 ((G-Vt It

TCI Library- http://www.telephonecollectors.info/
ISS 5, SECTION 502-543-400
(0-8Kl
_J
(■ LI
'--------,
PUT
o,
35-TYll't DIAL
I
I• I
(Ill
at
(S-8Kl •
HS
7
Tt
(SI
(NOTE 9)
(Ill (ST!Wtl
7
(S-VI 11
,..._
____
~
(NOTE 9)
(Y-GI 51
(W-8111
d
11•0
JACK
(RI
10
Rt (W-6)
5
(W-GI (BKI 9
8
(BK-SI
8Nt CWI
(GI
RRt -(810
NOTES:
y
z
I
I
I
l<w-BLI
I
I
I
I
L ________
_J
(STRAP)
II FL
12
(BK)
LS
(RI
2 (BLI
(Y-G)
I. 66E•TYPECONNECTINGBLOCKSHOWN.MOUNTINGCORO
MAYBE
PLUGGEDDIRECTLYINTO
CONNECTORCABLE.CORO
ANOPIN
NUMBERSFORCONNECTORCABLE
ARESAMEAS
MOUNTING
CORO.
HS
(STRAP)
0
2§
(BR)
e,
3§
(BK)
2. CONNECTIONSFORTIARINGERSHOWN.CONNECTIONSFORNIARINGERIDENTICALEXCEPTINSULATE
ANDSTORE(SI AND(S-RI LEADS.
3. IF EXCLUSIONFEATUREIS ADDEO,CONNECTSWITCHLEADSPERTABLEB.
4. FORBRIDGEDRINGERONANYLINECONNECT(R) RINGERLEADTOK OFNETWORKANO
(BK) RINGERLEADTOTIP OF LINE INVOLVED.CONNECT(S) STRAPFROMA OF
NETWORKTORING
OF
LINE INVOLVED.
5. IF CAPACITORIS NOTREQUIREDIN RINGERCIRCUIT,MOVE(R) RINGERLEADTO
A
OF
THENETWORK.
6. TO
SILENCERINGER
REFERTO APPROPRIATERINGERSECTION IN DIV ISI ON 501.
7. SET MUSTBE EQUIPPEDWITH 241B SERIES II AMPLIFIER IF EXCLUSIONFEATUREIS ADDED
8. IF HOLDPOSITION LAMP IS REQUIRED,USE SPAREPAIR AND TERMINATEON LH .
AND LG TERMINALS.
9 IN SETS MANUFACTUREDPR\OR TO 1980 LEADS ON TERM\NALS 1 A\\O 4 OF 241B 4
H40U
(
(
HANDSET Gl!5A
OORD :
~
:::,
~~
(
(
(WI '
---:~ ..
(WI
(G-Vl
8
St
•
v
RR
(GI
!52-0R
!53-TYPE
HEADSET
TRMTR
~
cc
RCVR
NETWORK
AMPLIFIER WEREREVERSED.WIRE AMPLIFIER AS SHOWNTO PREVENTTELEPHONE [/)<___________ ...,. ______ .....,.
CIRCUIT FROMOSCILLATING.
* ·
INSULATEDANOSTORED
t -NETWORKTERMINALUNDESIGNATE0TERMINALSARE
ON
KEYTERMINALBOARD.
§ -
2418
AMPLIFIERTERMINAL
PU-
PICKUPKEY
H·
HOLDKEY
LS-
LINESWITCH
HS-
HEADSETON-OFFKEY
(644A)
FL-
FLASHKEY
(644A)
2
241
B AMPLIFIER,
SERIESII
(NOTE71
Fig. 5-2563HBM Telephone Set, Connections (Sheet 2 of 2)
Page 9

TCI Library- http://www.telephonecollectors.info/
SECTIONS02-S43-400
IAl•IA2
KTS LIN£
CKT
IAl·IA2
KTS LAMP
CKT
BUZZER[
LEADS
R( I )
T( I )
R(2)
T(2)
R(3)
T(3)
R(4)
T(4)
R(5)
T(5)
L( I)
LG( I)
L(2)
LG(2)
L(3)
LG(3)
L(4)
LG(4)
L(5)
LG(5)
BZ
BZI
"AI-B
IAI· IA2
KTS
A-H
8
A·H
8
A·H·S-SI
8
A·H-S·S I
B
A•H·S·SI
8·81
R·RI
'
TO
SI
GR
G
D
BUS
LAM
y
p
G-SG
BL
(NOTE I )
CLIP NO.
2 -.
- I - /
- 8 -
- 7 - /
14
13" '
,
--'
20
_ 19 ,
26 ,
--'
_ 25_ ,
6 ,
--'
5
--'
12 ,
-'
II ,
-,e· '
--
17
-'
24 ,
--'
23 /
--
30 '
29 - ,
36 _ ,
'
35 ,
--'
4 -.
3 ,
--'
10
--
-'
9 ,
--'
16 ,
-'
15_ ,
-'
22 _ ,
'
21 ,
-'
28 ,
--'
27 -'
39 ,
-40 '
--'
38
-
--'
_37 ,
--'
PART Of 050N 636A KEY
MTGCORO
(BL·W) PU
26 (W·BL)
4 (BR·W)
29 (W-BR)
7 (O·R)
32 (R·O)
10 (S·R)
(R·S)
35 (G·BK)
13
38 (BK•G)
3 ~(G·W) LI
(W·G) LG
28 (BL·R) L2
6~
31~
9~R-R L3
(R·BR) LG
34
FL HS
9 (R) 16 15 (BK) 4 3 (S•R) ct(O-BKI
(S·Y)
(G) LS (W)
3
BL) d e Ft
BL)
2
HS LS
BL)
BL)
(G)
(G·BK) HS (BR)
6 s
LS (BR) N
(Y)
18 v,.----"T""--------;l/)
b C
a
(Y) (O·BKl
(0•BK) L4 r---------+.....L~~---- *
12~ (BK·0) LG
37 (S·BK) L5
15~
40~ (G·Y) 4 (BL)
18~ y G KS·2041tLI
43 ( • ) 6 (BL) AC BUZZER
0 LH)
(o-w) 0 LG (NOTES)
2 M
(W·O)
27 --------<.l>-4---------H.l--<ll
5
30 I "
8 ((G·R)
33 (R·G) 3H
l I ((BL-BK) M
36 (BK•BL) 4H
14 ((8R·BK) M
(Y•BR)
(S•R)
(BR)
(BK·BR) 5H (BR•BK)
39~-----<,~-~,------------------
45 (Y·S)
20 ~S-Y J
19 (BR•Y)
44 ((Y·BR)
RT (BK)
0RR (S) ~At
( STRAP) -.L
05G
(R)
TIA
RINGER
Kt 5300 OHMS
(NOTES2 ,4,5, AND61
TO
TABLE B
(NOTE3)
EXCLU0£0
STATION I~
R
A·H
8
X "
SP
SPARE
H
(Y•BL)
(W-BL)
(BL•Y)
(BL·W)
________ __,EXCLUSION
(W·O) SWITCH
-----,+
(Y·O)
(o-w)
(O•Y)
(NOTE I)
CLIP NO,
41 ,
'
42 ,
'
_43_ ,,
.
-44_ ,,
.
34 ,,
-.
33 ,,
.
31 ,
-47- '
/
.
48 ,,
-.
32 /
.
45 .
50 ,
-49- .
" " ,,
-46 .
,
- - '
+
PART Of 050N
MTG CORD
46 ( (V-BL) 0 ET
21 ((BL-V) (2)ER
47 ( (V-O) (2)EH
22 ( (O-V) (2)EB
17 ((0-Yl *
42 ( (Y-Ol M
41 ((Y-BLI *
49 ((V-BR) M
24 ( (BR-V) *
16 ( (BL-Yl *
48 ( (V·G) It
25 ( (S-V) It
50((V-Sl lt
23 ((G-Vl It
Fig. 6-•2S63HBMS Telephone Set, Connections (Sheet 1 of 2)t
Page 10

TCI Library- http://www.telephonecollectors.info/
ISS 5, SECTION 502-543-400
,--------,
6I6D
(0-BK) PART OF 35-TYPE DIAL
I
(Rl(STRAPIIN0TE 9) 4§ JACK
_J
(BL)
I• I
(Rl Tt (Rl
(
at (S-BK)
HS
(S)
7
(BK)
(
8
9 (W)
1
I
(
7
(S-Vl(N0TE 9) (Gl
(
(Y-G)
!!I
(W-BRI
H4DU
HANDSET
CORD (Rl
____ :
~
(BK)
~~~T
(Wl '
----:~
..
--------,
Gl5A
12 (WI
I
(R-G)
!5
(W-G) (BK) 11 10 (G-Vl
13 HS
FL
(BK-Sl 14
I (BK)
I
I
l<w-BLl
LS
(Rl
2
(BL) ( STRAP)
GNt (WI
(Gl
RRt (BIO
NOTES:
I
I
I
I
L ________ _J
(Y-Gl
1 66E-T'IPECONNECTINGBLOCKSHOWN.MOUNTINGCORDMAYBEPLUGGEDDIRECTLYINTO
CONNECTORCABLE.CORDANDPIN NUMBERSFORCO~NECTORCABLEARESAMEAS
MOUNTINGCORD.
2 CONNECTIONSFORTIARINGERSHOWN.CONNECTIONSFORNIARINGERIDENTICALEXCEPTINSULATE
ANDSTORE(S) AND(S-R) LEADS.
3 IF EXCLUSIONFEATUREIS ADDED,CONNECTSWITCHLEADSPERTABLEB.
4. FORBRIDGEDRINGERO'l ANYLINECONNECT(R) RINGERLEADTOK OFNETWORKAND
(BK)RINGERLEADTOTIP OFLINEINVOLVED.CONNECT(S) STRAPFROMA OF
NETWORKTORINGOFLINE INVOLVED.
5 IF CAPACITORIS NOTREQUIREDIN RINGERCIRCUIT,MOVE(R) RINGERLEADTOA OF
THENETWORK.
6 TOSILENCERINGERREFERTOAPPROPRIATERINGERSECTIONIN DIVISION501.
7. SETMUSTBEEQUIPPEDWITHA 241BSERIES
II
AMPLIFIERIF EXCLUSIONFEATUREIS
ADDED.
8. IF HOLDPOSITIONLAMPIS REQUIRED,USESPAREPAIRANOTERMINATEONLH
ANDLGTERMINALS.
9 IN SETSMANUFACTUREDPRIORTOJULY1980 THE(S-V) ANO(R) LEADSWERE
REVERSEDONTERMINALS1 ANO4 OF241B AMPLIFIER.WIREAMPLIFIERAS
SHOWNTOPREVENTTELEPHONECIRCUITFROMOSCILLATING.
* -
INSULATEDANDSTORED
t -
NETWORKTERMINALUNOESIGNATEDTERMINALSAREONKEYTERMINALBOARD.
§ -
241B AMPLIFIERTER:-11NAL
PU-
PlCKUPKEY
H-
HOLDKEY
LS-
LINESWITCH
HS-
HEADSETON-OFFKEY(644A)
FL -
FLASHKEY(644A)
4
z§
(BR)
0 •
3§ (BK)
0 •
H
2
8
ST
(W)
v
v
(G)
52-0R
53-TYPE
HEADSET
TRMTR
~
RCVR
..--------~~ R
GN
RR
NETWORK
2'!1IB AMPLIFIER, SERI ES II.
(NOTE 71
Fig. 6-•2563HBMS Telephone Set Connections (Sheet 2 of 2)f
Page 11

TCI Library- http://www.telephonecollectors.info/
SECTION 502-543-400
TABLE B
CONVERSION FOR LINE EXCLUSION KEY (NOTE)
EXCLUSION KEY LEADS
EXCLUSION KEY TEL SYS BL-W W-8l O-W W-O V-BL BL-V V-O O-V
lA
n,:, T* lBt H* ET ER EH EB
On any line
lAl, 1A2,6A,
or
6B R* T* EB H* ET ER EH EB
* Connect to terminal of line being excluded.
·rWhen other than Line 1 is excluded in a lA key telephone system, remove the 0-W mounting cord
condue:tor from terminal lB, insulate and store. Connect balance lead cord conductor of line in-
volved to terminal
lB.
Note: To allow access to and operation of the exclusion switch plunger during headset operation,
handset must be lifted and left off of its cradle. Returning handset to on-hook position cancels
exclusion.
TABLE C
PICKUP-SIGNAL KEY CONVERS1df4 (NOTES)
CONVERTIBLE KEY LEADS
KEY
OPTIONS Y-BR BR S-R BR-BK
HPPPPP
M M M X
HPPPPS M
M M
SG
HPPPSS l\1
M
SG
X
HPPSSS
M
X
SG
X
HPPP*P*S'''
M
X
!)H
N'
HPP'''P*P'''S'''
X
X
!5H
N'
0
These pickup key options use line switch or headset switch controlled ground through the common
signal key and the S lead of the selected line to operate a common signal relay.
tFor lA KTS connect to terminal
1.
Obtain common signal ground through (Y) line switch lead or
(G-BK)headset key connected to SG terminal.
Note 1: All convertible key positions are arranged in the factory as pickup positions. To convert a
key position from pickup (locking) to signaling (nonlocking), remove the 811218924 (P-12A892)
screw detail from plunger at the key position to be converted. Make necessary connection
changes as shown in Table C . To convert a key position from nonlocking to locking, insert
811218924(P-12A892)screw detail.
Note 2: When keys are converted for signaling, the S lead of key involved provides the signal circuit
and SG lead provides the common signal ground.
Page 12
12 Pages