ITT 601A User manual

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KSP601-0P0
Issue 1, May '79
THE 601A KEY
TELEPHONE SYSTEM,
5
LINE AND 10 STATION
INTERCOM CAPACITY
CONTENTS
Page
1.00 GENERAL.
......................... 2
LINE FEATURES
.................... 2
INTERCOM FEATURES
............. 2
TECHNICAL
SUMMARY ............. 2
2.00 IDENTIFICATION
................... 3
KEY SERVICE
UNIT................. 3
Power
Supply....................... 3
Interrupter . . . .. .
.. .. . . .. . . .... . .. . . 3
RINGING GENERATOR
............. 3
CO/PBX LINE CARD KTUs
........... 3
DIAL INTERCOM .. . .. . ...... .. . .. .. 3
General
............................ 3
Dial Intercom
Card.................. 3
T•T Adapter ......................... 4
OPTIONAL AUXILIARY FEATURES
.. 4
Call Announcing.................... 4
Dial Tone and
Ringback
for Intercom .......... 4
Manual Intercom . . . .. . . . . . . . .. . .. . . 4
Voice Paging .. . . . .. . . .. . .. . . .. . .. . . 5
Music-On-Hold
..................... 5
SUBSETS AND CALL
ANNOUNCERS
............ . .. . 5
Six-Button Subsets . . . . .. . . .. .. . . .. . 5
Ten-Button
Subsets............. . . .. 5
Call Announcer. . . . . . .. . . .. . . .. . .. .. 5
3.00 PLANNING THE INSTALLATION .... 6
GENERAL
.......................... 6
PLANNING CHART ................. 6
Stations and Lines. . . . . .. . .. . .. . . .. . 7
Optional
KSU Equipment ............ 7
4.00 INSTALLATION, C.O. SERVICE ...... 8
PREASSEMBLY
OF KSU . .. . . .... . .. 8
MOUNTING THE KSU ............... 9
INSTALLATION
OF
STATION BLOCKS ............. 9
CONNECTING CO/PBX LINES ....... 11
CONNECTING TELEPHONES
TO BLOCKS ................... 11
CONNECTING JUMPERS,
KSU TO BLOCKS ............... 11
Common-Audible Signal ............ 11
INSTALLING CARDS, KTUs ......... 11
OPERATIONAL CHECKS ............. 11
5.00 INSTALLATION, DIAL INTERCOM
CONNECTIONS ................ 19
General
............................ 19
BuzzerSignaling .................... 19
Ringer Signaling
.................... 19
T·T Dialing ......................... 19
INSTALLING CARDS, KTUs ......... 19
TO ADD DIAL TONE
AND RINGBACK ............... 19
6.00 INSTALLATION, CALL
ANNOUNCING ................. 23
7.00 INSTALLATION OF AUXILIARY
FEATURES
.................... 28
MUSIC-ON-HOLD
................... 28
MANUAL INTERCOM
............... 28
VOICE PAGING
..................... 28
8.00 CIRCUIT DIAGRAMS
...... '. ......... 32
ASSOCIATED PUBLICATIONS:
DOCUMENT NO.
184163-101
184243-101
184244-101
184245-101
184246-101
184247-101
EQUIPMENT COVERED
184162-101 Ringing Generator Kit (601A)
183977-101 Dial
Intercom Card (601 A)
184965-101 Interrupter Card (601 A)
183969-101 Power Supply (601A)
183973-101
Call Announcing Card (601A)
183981-101 T-T
Adapter for Intercom (601A)
Drawings and specifications included in this document are the property of ITT and shall
not be reproduced or copied in whole or in part as the basis for manufacture of the
items or for any other use detrimental to the interest of ITT.

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KSP601-00A
LINE FEATURES
1.06 Line features
include:
• Five-line
capacity
• Music-on-hold (optional)
• Use
of
standard
400-type
line
cards to
provide line pick-up, hold, and visual
1
and
audible
signaling.
• Buzzer or
ringer
signaling.
(Ringer
signaling
requires an
easily
installed
ring generator.)
-t:
Fig. 1-601A Key Service Unit With Ringing
Generator Installed
1.00 GENERAL
1.01
This
publ
ica
tion covers lde
r:
11t. cat1on. In-
stallation
, and
Operation
.
oi
a
6C
~
A Key
Telephone
System and ass
li
Ciatea a;::iparatus.
1.02 Whenever
this
publication
1s
re-,ssued.
the reasons for re-issue
will
be
listed
:n
this
paragraph.
1.03 The
601
A key
system
provides standard
key
system
functions
and features for 5 CO
lines
and
10
stat
ions.
1.04
Optional
features such as
dial
intercom
(with or
without
tone-and-voice
signaling
with
handsfree
answerback);
manual
intercom;
music-on-hold; and dial
access
to a
public
ad-
dress
system for paging from
intercom
stations
may be added.
1.05 Standard key
telephones
are used in a .
601A system.
Page2
•
Common
audible
signaling
(strapping
option).
INTERCOM FEATURES
1.07 Standard Dial
Intercom
features include:
• Ten
station
capacity
•
Two
digit
dial
codes
•
Common
talk
path
• Busy-lamp
indication
•
Last
Party
clear
1.08
Optional
Intercom
features are:
• Tel-Touch
dialing
• Dial tone,
ringback
(call
announcer
card)
• Call
Announcing,
providing
dIai
tone
and
ringback
tone.
• · A
system
can be
split
with
five
station
codes
designated
for
call
announcing
and five for buzzers
or
ringers.
•
Manual
intercom
.
• Dial
access
to
a paging system.
•
Pushbutton
access
to
a
paging
system.
TECHNICAL
SUMMARY
Power input: 115 Vac, 50/60
Hz,
1.5A fused.
Power
supply
outputs:
-24
Vdc at 1A, 18 Vac at
1A, and
10
Vac at 2A.
Line
capacity:
5
Station
capacity:
10
(dial codes)
Busy
lamp
capacity
(10
Vac):
50
Approximate
Dimensions,
inches
(cm)
Height
15.2 (38.6)
Width
8.1
(20.6)
Depth 6.9 (17.5)
Weight
(standard KSU)
approximately
12
lb.

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2.00 IDENTIFICATION
STANDARD 601A00-0P0 KEY SERVICE
UNIT
2.01 The basic 601A Key Service Unit (KSU) is
designed for wall or panel mounting and in-
cludes a Backboard and Card Frame Assembly,
a Power Supply, an Interrupter, connecting
block, and a cover.
2.02 The Backboard and Card Frame
Assembly has seven 18-contact card connec-
tors, one 20-contact card connector, and one
44-contact card connector. Two of the
18-contact connectors are dedicated to the
Power Supply and Interrupter. The remaining
five are wired for CO/PBX Line cards. Pins 1
through 18 of the 20-contact card connector are
wired to individual terminals on the connecting
block so it can be easily wired for various op-
tional cards. (NOTE: This connector will not ac-
cept 20-pin cards such as the 405A
Semiautomatic Exclusion, K414A Ringdown
Tie Line, or the K416A Station Line circuits.)
The 44-contact card connector is dedicated to
intercom.
Power Supply (183969-101)
2.02 The
power supply provides all voltages
required for a system using buzzer signaling or
call announcing. Power input is 115 Vac, 50/60
Hz and outputs are as follows:
(1) Regulated -24 Vdc at 1 amp for intercom
and line card talk battery and power for logic
circuits and relays.
(2) 18 Vac at 1 amp unregulated for power to
buzzers for intercom or CO signaling.
(3) 10 Vac at 2 amps for station lamps. This
will supply 50 lamps, continuous load.
2.04 The unit consists of a transformer and
other electrical components mounted on a
printed circuit board. It includes a fuse, power
cord and a jack for connection to a ring
generator kit P/N184162-101.
2.05 The power supply board plugs into the
power supply connector provided in the 601A
key system. Two plastic push fasteners are pro-
vided to anchor the power supply to the KSU
frame. The power cord plugs into connector J1
on the PC board. (3-pin connector.)
KSP601-00A
Interrupter Card (183969-101)
2.06 The
interrupter (P/N 183965-101) is in-
tended for use with the 601A key system to pro-
vide lamp flash, lamp wink, and interrupted (in-
termittent) ringing. The ringing may be 105 V~c
or 18 Vac depending on the strapping of option
block TC1 located near the center of the card at
the connector end.
2.07 The unit is installed by plugging it into
the second (from the top) card connector of the
601A KSU.
RINGING GENERATOR KIT (184162-101)
2.08 A
ringing generator kit must be sepa-
rately ordered and installed if ringers are used
in the system. The 184162-101 Ringing
Generator Kit was designed for the 601A key
system for this purpose. It has a nominal out-
put of 105 Vac, 30 Hz.
CO/PBX LINE CARD KTU(K400E}
2.09 One K400E CO/PBX line card
KTU must
be separately ordered and installed for each CO
or PBX line coming to the system. These are in-
stalled by inserting them into prewired line card
connectors. The K400E KTU includes circuitry
to facilitate music-on-hold and signaling
through a separate lead.
DIAL INTERCOM
General
2.10 The dial
intercom system may be of any
one of several configurations:
(1) Using buzzers for signaling, with or
without dial tone and ringback. (Dial tone and
ringback are provided by the call announcing
card.)
(2) Using ringers for signaling, with or without
dial tone and ringback. (A ringing generator
must be installed for ringer signaling, and a call
announcing card must be installed to provide
dial tone and ringback.)
(3) Using call announcers for signaling. In this
application, the call announcing card is
strapped to provide a tone burst and return tone
instead of ringback. It also provides dial tone
Page3

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KSP601-00A
(4) Mixed signaling, using buzzers (or ringers)
and
call announcers for signaling. Five station
codes must be assigned to each method: odd-
numbered stations will be signaled by Call An-
nouncer and even-numbered stations by buzzer
(or ringer).
(5) The dial intercom is normally rotary but
can be adapted to accept Tel-Touch (tone) dial-
ing by
adding a piggy-back card to the intercom
card.
Dial Intercom Card (183977-101)
2.11 The intercom card (P/N 183977-101) is in-
tended for use with the ITT 601 A key system. It
will provide intercom for up to ten rotary-dial
stations with buzzer signaling or, optionally,
ringing signaling if a ringing generator kit (P/N
184162-101) is
installed in the KSU. It can be
converted to handle Tel-Touch (tone) dialing by
the addition of a piggy-back card (PIN
183981-101).
The intercom card does not pro-
vide dial tone or ringback, but these features
can be added by installing a call-announcing
card in the KSU even though call announcers
are not used in the system.
2.12 The intercom card plugs into a dedicated
connector in the 601A KSU. Station connec-
tions are made on the terminal block provided
in
the KSU.
Tel-Touch (Tone Dial) Adapter Card (183981-101)
2.13 The 183981-101 Tel-Touch
adapter card
was designed for use in conjunction with the
183977-101
dial-intercom card to permit Tel-
Touch dialing on intercom calls.
2.14 The Tel-Touch adapter card will decode
standard dual-tone multiple-frequency (DTMF)
codes so Tel-Touch dialing may be used on the
601 A key system intercom.
2.15 The Tel-Touch card is designed to be
piggy-back mounted on the 183977-101 dial-
intercom card and the assembly is then in-
serted in
the intercom card slot of the 601A
KSU.
Page4
OPTIONAL AUXILIARY FEATURES
Call Announcing
2.16 The 183973-101 Call Announcing card
was designed for use in the option slot of the
601 A key system to permit tone-and-voice
signaling with handsfree answerback for up to
ten stations on intercom calls.
2.17 The stations to be signaled by tone-and-
voice signaling will require a call announcer for
each station to be signaled in this manner. This
may be a 174B Call Announcer connected to
each phone or an 870 (rotary) or 2870 (T-T)
telephone with integral call announcer. If sta-
tions are situated within 15 feet of each other,
one Call
Announcer may be used to serve
several
stations.
2.18 The 183973-101 Call Announcing Card
may also be used in a 601 A key system to pro-
vide
dial tone and ringback for intercom
whether Call Announcers are used or not.
Dial Tone and Ringback on Intercom Calls
2.19 Dial tone and ringback for intercom calls
is provided by installing the call announcing
card even though call announcers are not used.
Manual Intercom (K401 B KTU)
2.20 The
K401 B manual intercom KTU pro-
vides busy-lamp feed and talk path for manual
intercom or for a private line between two sta-
tions only. Stations must be signaled by a
separate buzzer arrangement or by using the
dial intercom. This KTU requires A-battery (AB)
and A-ground(AG) to be strapped to pins 18 and
3 respectively.
This strapping is done on the
601A connecting block.
2.21 The K401 B KTU may be installed in any
vacant line card slot or in the "option" slot.
2.22 Manual intercom may require two but-
tons of the connected telephones, one button
to access the line and one for signaling. An ex-
ternal button can be used for signaling.

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Voice Paging through
PA
System
2.23 Voice Paging
through
a
customer
owned
PA
system
from any
station
can be provided by
either
of
two
means:
(1)
button
access
to
a
PA
amplifier,
or
(2)
dial
access
to
PA
amplifier.
2.24
Button-Accessed
Paging.
A K401 B
Manual
Intercom
card may be used
to
access
the
PA
amplifier.
A person
at
any
station
can
page by
holding
down
a
line-pickup
button
that
has been converted
to
non-locking
operation
and
talking
into
his
handset.
In
planning
this
type
of
installation,
remember
that
a
button
will
be used at each phone and a line card
position
in the
KSU.
2.25
Dial-Accessed Paging.
In
a
system
using
all ringers and buzzers
for
intercom
signaling
(with or
without
dial
tone
and ringback) a K410A
PagingAdapter
KTU
is
installed
in a vacant line
card
slot
to
provide
this
feature.
In
system
using all
call
announcers
for
intercom
signal-
ing, the K410A
KTU
is
not
required. An
intercom
number
is
assigned
to
paging, and
interface
cir-
cuit
consisting
of
a
.1
Mfd, 25
V,
capacitor
and
a 600-Ohm
resistor
must
be
connected
to
the
PA
amplifier
input.
In
a
mixed
system
(using
buzzers
or
ringers at
some
stations
and call an-
nouncers
at
other
stations)
either
of
the
two
methods
may be used.
If
a buzzer/ringer
number
is
to
be used (even nymber) a K410A
KTU
must
be used, and
this
will
reduce line
capacity
by one.
Music-On-Hold (K403A KTU)
2.26
A K403A KTU may be
separately
ordered
and
installed
in the
C>ption
slot
or
in a separate-
ly provided card panel,
such
as a K359A one-
card panel,
to
provide music-on-hold for a max-
imum
of
six CO
or
PBX lines, a low-level
music
source,
such
as a tape
deck
or
FM tuner,
must
be
separately
provided.
SUBSETS
AND
CALL
ANNOUNCERS
Six-Button Subsets
2.27
Six-button
subsets
will
access
a
total
of
five
lines
including
intercom.
Refer
to
an ITT
"Telephone
Guide",
price
list, or
"Key
System
Guide"
KSG 6-79
for
ordering
information.
If
KSP601-00A
call
announcing
is
used
for
signaling,
a 174B
Call
Announcer
must
be
separately
provided
and
connected
to
each
station
to
be
signaled
by
call
announcing.
Ten-Button Subsets
2.28 Ten-button
subsets
will
access
a
total
of
nine
lines
including
intercom.
Thus a 10-button
set may handle five CO/PBX lines, rotary inter-
com
and
manual
intercom
and
will
have a
re-
maining
line
button
that
may be used
to
access
a
public
address
system
for
voice paging.
2.29
Ten-button
sets
are offered
with
integral
call
announcer. Ordering
information
follows:
(1
)0870*
*
-0BA-42M Set; 10-button; desk;
R-D;
ringer;
call
announcer
(2)
0870**-0BA-46M;
same
with
operator
recall
button
(3)
0870**-0BA-76M;
same
as
(1)
plus
automatic
exclusion
circuit
(4)
2870* *-0BA-42M; same as
(1)
except
T-T
dial
instead
of
R-D
(5)
2870* *-0BA-46M; same as
(2)
except
T-T
dial
instead
of
R-D
(6)
2870* *-0BA-76M; same as
(3)
except
T-T
dial
instead
of
R-D
If
subsets
are
wanted
without
ringer,
change
"BA"
to
"LR"
in ordering number.
174**-00B
Call Announcer Unit
2.30 Serves as
loudspeaker
for tone-and-voice
signaling
and as a
microphone
for
handsfree
answerback. One
call
announcer
can serve one
telephone
or
several
telephones
if
they
are
located
in
the
same area. It is
equipped
with
a
privacy
switch
that
can be used
manually
to
disable
the
transmit
mode. The purpose
of
this
switch
is
to
prevent a
caller
from hearing a con-
versation
at the called
station.
**Substitute
color
code
as
follows: 00, Black;
05,
Moss
Green;
13,
Beige; 15, White; 44,
Light Ash;
45, Cocoa
Brown
Pages

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KSP601-00A
3.00 PLANNING THE INSTALLATION
GENERAL
3.01
The
KSU
should
be
centrally
located
to
minimize
length
of
cable runs.
3.02 The
KSU
must
be
within
five feet (length
of
power
cord)
of
a
11
O
Vac service
outlet
which
is
not
controlled
by a
switch
accessible
for
false operation.
Do
not splice
or
add exten-
sions
to
power cord.
3.03 The service
outlet
must
be
of
the ground-
ing type and
should
provide
an
individual
cir-
cuit.
3.04 The
connecting
block
in
the
KSU
will
pro-
vide
terminating
points
for
five
station
cables.
If more than five
statior,s
are
to
be connected,
additional
66-type
connecting
blocks
musl
be
mounted
near the KSU. (See
figures
2 and
3.)
NOTE: The connecting block arrangement
is
an
installer
option. Trouble-shooting is
simplified if a separate split 66-type block
is
used for each two stations to be connected.
These blocks are then connected
in
multiple to
the
KSU
block with the exception of the
RT
leads which must
be
wired individually from the
KSU
"SIG" clips to each station side of each
block, and call-announcer
stations
must
have
an individual A-lead from the
intercom
button
to
any
clip
in
column
6,
rows 1 through 10.
PLANNING
CHART
3.05 Fill in the
"Station
Planning"
Chart.
CHART
I.
601
A
KEY
SYSTEM PLANNING, STATIONS AND LINES
Page&
WHICH BUTTON WILL
ICM "SIG"' PARTY
OR
THESE LINES APPEAR ON
NO. TERM LOCATION 1
10 0
11
1
12
2
13
3
14
4
15 5
16
6
17
7
18
8
19
9
Additional
KSU
Equipment
Required
K400E Line Card
KTU
1
183977-101
Intercom
Card
183973-101 Call
Announcina
Card
184162-101 Ringing
Generator
Kit
NOTE
1:
CA
=
Call
Announcing
RN
= Ringer
BZ
= Buzzer
2 3 4 5
ICM
1 1 1 1 1
SIGNALING
MODE SUBSET/CALL
(NOTE 1\ ANNOUNCER
CA
RN
BZ
MODEL NO.
(NOTE
2)
1 1
A
system
may
be
mixed
5
+
5
call
announcing
and buzzers (or ringers). Odd
number
stations
must
be
call-announcer
stations
and even numbered
stations
must
be buzzer
or
ringer
stations.
NOTE
2:
Stations
to
be
signaled
by
call
announcing
must
have a 174B call an-
nouncer
connected
to
the
telephone
set
or
a
telephone
set
with
integral
call
an-
nouncer
(model 870 rotary
dial
qr
2870
T-T
dial.)

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FEATURE OR FUNCTION
CO/PBX Line
Music-On-Hold
Ringer Signaling
Dial Intercom
Tel-Touch (Tone)
Dialing for Intercom
Dial Tone and Ringback
for Intercom CalIs
Call
Announcing with
Dial Tone and Tone Burst
Manual Intercom
Button Access
to a P.A.
System for Voice Paging
Dial Access
to a P.A.
System for Voice Paging
KSP601-00A
ORDERING NO. DESCRIPTION
000400-00E
KTU, CO/PBX Line Card. 18-contact P.C. board.
One required per CO/PBX line.
000403-00A
KTU, Music-on-hold.
One required per system. (Requires low-
level
music source.) 18-contact P.C. board.
184162-101 KIT, Ringing Generator. One required per system
to provide ringing voltage.
183977-101
KTU, Dial Intercom. One required per system.
44-contact P.C. board
183981-101
KTU, T-T adapter. One required per system.
(Mounts on 183977-101 KTU.)
183973-101 KTU, Call-Announcing. One required per system.
(Call Announcer not used.
KTU strapped
for ringback.) 18-contact P.C. board.
183973-101
KTU, Call-Announcing. One required per system.
000401-008
000401-008
000410-00A
(A call announcer is required at each sta-
tion.) 18-contact
P.C. board.
NOTE: A system may be mixed; five stations
signaled
by call announcing and five by buzzers
(or ringers if a ringing generator is used).
KTU, Mc:inual Intercom. One required per manual
intercom circuit.
KTU, Manual Intercom. One required. 18-contact
P.C. board. Installs in line card slot.
KTU, Paging Adapter. One required. 18-contact
P.C. board. Installs in line card slot and
uses one intercom number.
NOTE: The K410A KTU is not required in an all
call announcing system
(or in a mixed system if a
call-announcing number
is available).
Page7

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KSP601-00A
4.00 INSTALLATION C.O. SERVICE ONLY
PREASSEMBLE
KSU
4.01 The power supply, interrupter card,
power cord, and two plastic push-fasteners are
packed in the KSU.
4.02 After removing the KSU from the carton,
place it on a level work surace with the cover
up.
4.03 Press inward on the center section of the
bottom of the cover to unlatch it and lift the
cover
straight up and set it aside.
4.04 Check that the following items are in-
cluded then set them aside until they are called
for:
(1) 3-conductor power cord.
(2) One small envelope containing two plastic
push fasteners. (These may be included in
power supply carton.)
(3) One carton containing the KSU power sup-
ply (183969-101).
(4) One carton containing the interrupter card
(183965-101
).
Install Power Cord in KSU
(Tools required: one thin blade slot
screwdriver.)
4.05 Turn the KSU over so the internal wiring
is up.
4.06 Remove one of the two screws that
secure the power cord retainer bar at the bot-
tom left of the KSU and loosen the second
screw.
4.07 Insert the plastic jack of the power cord
through the rectangular slot on the left side of
the KSU and pull the cord through the hole until
it extends about 4 inches beyond the top of the
KSU.
Pages
4.08 Place the power cord in the retainer slot
and reinstall the screw removed in a prev:ous
step. If a
ringing generator will not be used,
tighten the screws. If a ringing generator is to
be installed, do not tighten the screws at this
time.
Install Ringing Generator if Required
(Tools required: one thin blade slot screwdriver
and one medium size Phillips screwdriver.)
4.09 Turn the KSU so its front is up.
4.10 Place the transformer on the plastic
bosses at the upper right corner of the KSU.
(The installation will be neater if the
transformer leads are turned to your right.)
Secure
the transformer with the four long
screws included.
4.11 Using the two short screws. attach the
two metal clips loosely to the KSU immediately
to the right of the transformer.
4.12 Raise the clips and place the capacitor
(with wiring toward your left) under them.
Tighten the two screws so the two clips fasten
over the shoulders of the capacitor and hold it
securely.
Install Power Supply
4.13 Insert power supply in the top card slot
of the KSU and plug the power cord onto the
3-pin jack.
4.14 If a ringing generator has been installed,
push the ringing generator jack onto the 6-pin
plug
of the power supply.
4.15 Push the two plastic push-fasteners
through the two holes near the front corners of
the power transformer and through the match-
ing holes
of the KSU frame.
4.16 If the power cord retainer bar screws
have not been tightened gently pull the slack
out of the cord, tilt the KSU up and tighten the
two screws.

TCI Library- http://www.telephonecollectors.info/
MOUNT THE KSU
4.17 Mount the KSU on a wall or panel with
three bolts or screws. (Be sure the power cord
is in place.)
4.18 Connect a 12-gauge wire from the screw
terminal on the power supply to
an approved
earth ground. (This screw terminal is located
near the right front corner
of the power supply
card.)
KSP601-00A
INSTALL STATION CONNECTING BLOCKS
4.19 Near the KSU, install one split 66-type
connecting block for each
two stations to be
connected. (Figure
3.)
NOTE: If five or fewer stations are to be con-
nected, they can be connected directly to the
KSU block. (Figure 2.)
CABLE
~
KSU
CABLE
~
CABLE
~
CABLE
~
'
CO/PBX LINES
POWER CORD
Fig. 2-Typlcal Installation with Five or Fewer Stations
INDIVIDUAL CABLES TO STATIONS
KSU
CO/PBX LINES JUMPERS
Spllt 66- Type Blocks
POWER CORD
Flg.3- Typlcal Installation Using Spllt 66-Type Blocks for Terrnlnatlon of Station Cable
Page9

TCI Library- http://www.telephonecollectors.info/
KSP601-00A
14
Page 10
POWER SUPPLY
INTERRUPTER
LINE
CARD
LINE CARD
LINE
CARD
LINE CARD
LINE
CARD
OPTION CARD
INTERCOM
7 1/ 4
--------41~
0 0
TRANSFORMER
0
CONNECTING
BLOCK
CONNECTING
BLOCK
RINGING GENERATOR
POWER CORD SLOT
CABLE SLOT
Fig.
4-Locatlon
of KTUs, Ring Generator, and Mounting Holes

TCI Library- http://www.telephonecollectors.info/
CONNECT CO/PBX LINES
4.20 Refer
to table B and to figure 5 and con-
nect CO/PBX lines to the KSU block.
NOTE: All cabling
is brought through the
center opening
in the bottom of the KSU frame.
CONNECT STATION CABLE
TO STATION
BLOCKS
4.21 Using the standard wiring pattern, con-
nect each station cable to one side of each
split block. (The station leads should be con-
nected
to the outer column of clips on each
side
of the block.) Label the blocks with station
number, party name, and lead designations.
CONNECT JUMPERS FROM
KSU TO STATION
BLOCKS
4.22 Refer
to figure 5 and connect individual
jumpers from clips of column 5 of the KSU
block to each station block. Use loop-through
termination on station blocks and connect
each jumper to the two center columns of clips
of each station block.
CAUTION:
Be sure to connect jumpers by
designation. These designations are shown in
figure
5.
Common Audible Signal
4.23
Two or more lines may be connected to
ring at one or more stations. For example: if
one station is assigned to answer all calls, the
ringer
at the station can be caused to ring on all
lines by strapping all RC clips together and
connecting them to the R1 lead of that station.
{This is normally the slate-yellow lead of the
station cable which will appear at terminal 40
on the
station block.)
INSTALL PLUG-IN
KTUs
4.24 Refer to figure 6 and strap interrupter
card
for 18 Vac or 105 Vac signaling. Insert the
interrupter card into the card slot immediately
beneath the power supply.
NOTE: Install cards with component side up.
KSP601-00A
4.25 Insert one 400E line card
into each active
line card slot. These are the five
slots im-
mediately beneath the interrupter.
NOTE: The 400E line card has several strap-
ping options. Refer
to the instructions packed
with the 400E line card and strap the card for
the desired options.
OPERATIONAL CHECKS
4.26 Recheck all
connections for correctness
and security.
4.27 Plug
power cord into 110 Vac service
outlet.
4.28 Go off-hook at a
station and depress
each connected line
button in sequence. The
busy lamp
for the associated line should be on
at all connected stations when its button is
depressed at any station.
4.29 While off-hook, depress line 1
button and
check that you receive dial tone. Blow in your
transmitter to check for sidetone in your
receiver.
4.30 Check
for proper CO ringing by dialing
your own number. The lamp associated with
the line with the incoming call should flash at
all connected stations. Have someone answer
at another set and check your talk path by con-
versing
with them.
4.31 Push your HOLD button. The lamps
associated
with the line you are on should wink
at all connected stations.
4.32 Call your business
office or other outside
number, and advise them that you are going to
put them on hold for
30 seconds and ask them
to operate their
hookswitch several times while
they are on hold. Push your hold
button and, at
the end
of 30 seconds, return to the held line by
pushing the
button associated with that line.
The connection should have remained intact. If
it does not strapping on the 400E card may
be
incorrect. (See instructions packed with 400E
KTU.
Page11

TCI Library- http://www.telephonecollectors.info/
KSP601-00A
TABLE
A1.-KSU
Block Layout, Rows 1 thru 25
CIRCUIT
DESIG-
NATION
1 2
Tl
Pin
3
CO/PBX
LINE
l Rl
AG
STATION
T
lT
(CLIPS
1-5)
CONNECTIONS
R lR (CLIPS
1-5)
LINE
l A lA (CLIPS
1-5)
(INCLUDE
RG,RC
Al/LG Al/LG (CLIPS
1-5)
ON
ROW
2)
L lL (CLIPS
1-5)
Tl
Pin
3
CO/PBX
LINE
2
R2
AG
STATION
T
2T
(CLIPS
1-5)
CONNECTIONS
R
2R
(CLIPS
1-5)
LINE
2 A
2A
(CLIPS
1-5)
(INCLUDE
RG,RC
Al/LG
LG
(CLIPS
1-5)
ON
ROW
9) L
21
(CLIPS
1-5)
T3
Pin
3
CO/PBX
LINE
3
R3
AG
STATION
T
3T
(CLIPS
1-5)
CONNECTIONS
R
3R
(CLIPS
1-5)
LINE
3 A
3A
(CLIPS
1-5)
(INCLUDE
RG,RC
Al/LG
LG
(CLIPS
1-5)
ON
ROW
16)
L
31.
(CLIPS
1-5)
CA
RESET
WHEN
CALL
CA
BUS
(1-5)
CONNECTED
ANNOUNCERS
ARE
USED
CA
BUS
(l-5)
CONNECTED
GROUND
LG
BUS,
GROUND
NOTES:
(1)
These clips are internally wired to pins of
the option slot
as
listed.
(2)
When a call announcer card is used
in
the
system, the intercom A-lead must
be
brought
from each station to any of these ten terminals.
Page12
CLIP
NUMBER
3 4 5
Pin
18
AB
RG
RC
Pin
18
AB
RG
RC
Pin
18
AB
RG
RC
to
26-6
TO
26-6
ROW
6 (Note
1)
No.
Pin
1
I\
1
Pin
2 2
Pin
3 3
Pin
4 4
Pin
5 5
N
Pin
6
~
6
E-<
Pin
7
0
7
z
Pin
8 8
Pin
9 9
Pin
10
V
10
- -
------
Pin
11
11
Pin
12
12
Pin
13
13
Pin
14 14
Pin
15
15
Pin
16 16
Pin
17 17
Pin
18
18
19
20
21
-·-
22
23
24
25

TCI Library- http://www.telephonecollectors.info/
Table A2.-KSU Block Layout, Rows 26 thru 50
CIRCUIT DESIG- CLIP NUMBER
NATION 1 2 3
T4 PIN
3 PIN
18
CO/PBX LINE 4
R4 AG AB
STATION T 4T
(CLIPS
1-5)
CONNECTIONS R
4R (CLIPS 1-5)
LINE 4 A 4A
(CLIPS
1-5)
(INCLUDE RG,RC Al/LG
LG (CLIPS
1-5)
ON ROW 27) 4L
(CLIPS
1-5)
TS
PIN 3 PIN 18
CO/PBX LINE 5
RS AG
AB
STATION
T ST
(CLIPS
1-5)
CONNECTIONS
R
SR (CLIPS 1-5)
LINE 5 A
SA (CLIPS 1-5)
(INCLUDE RG,RC Al/LG
LG
(CLIPS
1-5)
ON ROW 34) L
SL
(CLIPS
1-5)
INTERCOM RT SIG
RT 10
RT 11 RT 12
(SIGNAL) CONN
SIG
RT 15
RT 16 RT 17
INTERCOM T,R T
INTERCOM T (CLIPS 1-5)
STATION
R
INTERCOM R (CLIPS 1-5)
CONNECTIONS
T
INTERCOM T (CLIPS
1-5)
R
INTERCOM R (CLIPS 1-5)
LG
BUS (1-5) CONNECTED TO 27-6
INTERCOM LAMP L
INTERCOM LAMP (CLIPS 1-5)
& LAMP GROUND
LG
BUS (1-5) CONNECTED TO 27-6
(Mote 1)
L
INTERCOM LAMP (CLIPS 1-5)
NOTES:
(1) Terminals labeled LG are connected only
to terminal 27-6. When they are to be used for
ground, 27-6 must be strapped
to 27-2 (AG).
When Call Announcers are used, 27-6 must
be
strapped to 27-3 (AB) and these terminals then
provide
-24 V T~LK BATTERY.
4
RG
RG
RT
RT
5
RC
RC
13 RT 14
18
RT 19
I
I
I
I
KSP601-00A
ROW
6 (TIE POINTS)
No.
Connected to llow ■
22,23
26
Connected to Rows
46.48
27
18V ac Buzzer sig.
28
CA RST (Call Ann. Reset
29
~
30
100 OHMS
>
31
105 V from Ring Gen.
32
105 V RN Interrup. Ring
33
105 V Input to
ICM
34
Relay Tree
Aux. Input (18 V
Input 35
to Relay Tree)
Call Ann. Ringback Tone
36
-19V For Call Ann.
37
Ll Lamp
Control (CA) 11 38
I
12 Lamp Control (CA)
39
RB
Tone Burst (CA)
' 40
RL
ICM Relay Control(CA)
41
FP Breaks
ICM Dial Tone
42
AO
For Mixed System
43
:
44
,I 45
4----
!146
11 47
,,
·i 48
> 49
,,__
' 50
Page 13

TCI Library- http://www.telephonecollectors.info/
KSP601-00A
Table
B.-KSU
Block;
CO
Lines
and
Station Termination. (See Fig.
5)
CIRCUIT
DESIGNATION
601A
CONNECTION
BLOCK COMMENTS
ROW CLIP
CO/PBX
Tl
l l
Line
Rl
2 l
DRl
1 2
Direct
Ring Lead
Line l
1T
j
1-5
lR
4
1-5
Station
lA
5
1-5
Connections
Al
6
1-5
One
Conn.
Per
Station
LG 6
1-5
lL 7
1-5
RC
2 5 Ring From
CO
Line Card
RG
2 4
CO/PBX
T2
8 l
Line
R2
9 l
DR2
8 2
Line 2
2T
10
1-5
2R
11
1-5
Station
2A
12
1-5
Connections
Al
13
1-5
One
Conn.
Per
Stat
ion
LG
13
1-5
2L
14
1-5
2RC
9 5
2RG
9 4
CO/PBX
T3
15
l
Line
R3
16
l
DR3
15
2
Line 3
3T
17
1-5
3R
18
1-5
Station
3A
19
1-5
Connections
Al
20
1-5
One
Conn.
Per
Station
LG
20
1-5
3L
21
1-5
3RC
16
5
3RG
16
4
CO/PBX
T4
26 l
Line
R4
27 l
DR4
26 2
Line 4
4T
28
1-5
4R
29
1-5
Station
4A
30
1-5
Connections
Al
31
1-5
One
Conn.
Per
Station
LG
31
1-5
4L
32
1-5
4RC
27 5
4RG 27 4
CO/PBX
T5
33
l
Line
R5
34
l
DR5
33 2
Line 5 5T
35
1-5
5R
36
1-5
Station
5A
37
1-5
Connections
Al
38
1-5
One
Conn.
Per
Station
LG 38
1-5
5RC
34
5
5RG
34
4
T
42,44
1-5
Dial
Station
R
43,45
1-5
Intercom
Connections
A
1-10
6
Use
with
call
announcing
card
only
LG A
1/LG
L
47,49
1-5
RT
40,41
1-5
Signal
palh,
stations
10-19
AB
46,48
1-5
Connect
AB
to
27-6
Call
Station
RESET
22,23
1-5
Connect
26-6
to
29-6
Announce
Connec
ti
ens
GROUND
24
1-5
Any ground will suffice
RT
40,41
1-5
Signal
path,
stations
10-19
Page14

TCI Library- http://www.telephonecollectors.info/
CO/PBX
LINES
D *
Tl
Rl
DR2
T2
R2
DR3
T3
R3
D 4
T4
R4
DRS
5
R5
KSP601-00A
DO NOT CONNECT ANY LEADS TO THIS COLUMN
c::::J c.::JCCJr:r::J~
0 I 2 3 '4
c:.n~~c::::::.::Jt:::!::l
5 G, 7 8 G
r::::r:::J-- -G.:J-- -c:::J- -c:-::>- -c:r=J
=
=
=
=
=
=
=
=
=
=
=
t:I::l
~I
3;:
.,,.,,
Yo
~5__]
¼
41
-o/Z~
4_0
~
.:;--i
Ai._=]
--CJ
1RG
1RC
1T
lR
1A (NOTE 1)
,A;]
1L
2RC
2T
2R
2A
2LG
3T
3R
3A
3LG
3L
4T
4R
4A
4LG
4L
SRG
SR
ST
SR
SA
SLG
SL
STATION CABLE
OR JUMPERS TO
STATION BLOCKS
*DR Lead (Direct Ring Lead). See KSP400E for further in-
structions concerning this lead.
NOTE
1: 1 LG (W·G) connects to any available pin (1-5) on
rows
6, 13, 20, 31, or 38 .
NOTE
2: For common audible signaling, connect RC clips
together and connect to station that is to receive CAS.
NOTE
3: Only 1 station shown connected. Connect addi-
tional stations on same busses. For more than 5 stations,
install a separate block to connect extra subsets.
Fig. 5-CO/PBX Line and Station Connections
Page 15

TCI Library- http://www.telephonecollectors.info/
Table C. Station Connections for 5-Line Sets
and 174B Call
Announcer
DESIG-
NATION
TERMINAL
IN SET
MOUNTING PLUG CONNECTING CONN. BLOCK 601A CONN. BLOCK
CORD PIN
CABLE ROW NUMBER ROW TERM.
1T
iR
lA
Al
1LG
lL
2T
2R
2A
2LG
2L
3T
3R
3A
3LG
3L
4T
4R
4A
4LG
4L
5T
5R ~
5A (1)8
<>:
w
....
5LG Z
5l
AG
AB
Hold
Lamp
CA RST
CA RT
1T
lR
lH
18
LG
L1
2T
2R
2H
LG
L2
3T
3R
3H
LG
L3
4T
4R
4H
LG
L4
ST
5R
5H
LG
L5
6
5
4
3
LG
LH
L2 (e)
SG
RT
RR
W-Bl 26
BL-W 1
W-0 27
0-W 2
W.-G 28
G-W 3
W-BN 29
BN-W 4
W-SL 30
SL-W (bl 5
R-BL (c,d) 31
BL-R 6
R-O 32
0-R 7
R-G 33
G-R (b) 8
R-BN (c,d) 34
BN-R 9
R-SL 35
SL-R 10
BK-BL 36
BL-BK (b)
11
BK-O (c,d) 37
O-BK 12
BK-G 38
G-BK 13
BK-BN 39
BN-BK (b) 14
BK-SL (c,d) 40
SL-BK 15
Y-BL(c) 41
BL-Y (c) 16
Y-O (d) 42
O-Y /dl (2) 17
Y-G (d) 43
G-Y (d) 18
Y-BN 44
BN-Y 19
Y-SL 45
SL-Y 20
W-BL
Bl-W
W-0
0-W
W-G
G-W
W-BN
BN-W
W-SL
SL-W (b)
R-BL
BL-R
R-O
0-R
R-G
G-R (b)
R-BN
BN-R
R-SL
SL-R
BK-BL
BL-BK (b)
BK-O (c.d)
O-BK
BK-G
G-BK
8K-BN
BN-BK
BK-SL
SL-BK
Y-BL
BL-Y
Y-O
O-Y
Y-G
G-Y
Y-BN
BN-Y
Y-SL
SL-Y
l
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
3
4
5
6
6
7
10
11
12
13
14
17
18
19
20
21
28
29
30
31
32
42.44
43,45
1-10
AlAG
47 49
34
34
29
40,41
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
1-5
6
1-5
1-5
2 (AG)
3 IAB\
6
1-5 (f)
(b) Spare Conductors. (c) Not Included in 34-conductor Mounting Cord. (d) Not Included in 42-conductor
Mounting Cord. (e) On Network. (f ) RT Terminal assigned to this station.
NOTES:
(1) Line position 5 is used for Intercom. If this
station is to be signaled by call announcer, the
SA lead must be connected to terminal 6 of any
row 1 through 10.
(2) The 0-Y lead, terminal 34 on the station
block, supplies AB (A-Battery)
to the call an-
nouncer.

TCI Library- http://www.telephonecollectors.info/
KSP601-00A
Table D- Connections to Station blocks, 870, or
2870 Telephones
in a 601A Key System.
CIRCUIT
MOUNTING PLUG
RUNNING
STATION BLOCK
JUMPERS TO KSU BLOCKS
NOTES
DESIG-
CORD PIN
CABLE
ROW NUMBERS
ROW TERMINAL
1T
W-BL 26
W-BL
lR
BL-W
1 BL-\'/
lA
W-O 27
W-O
Al O-W
2
0-Vi
!LG
W-G 28
W-G
lL
G-W
3
G-W
2T
W-BN 29
W-BN
2R
BN-W
4 BN-W
2A
W-SL 30
W-SL
9A or PVL2
SL-W
5
SL-W
2LG
R-BL
31
R-BL -
2L
BL- R 6 BL-R
3T R-O
32 R-O
JR O-R
7 O-R
3A
R-G
33 R-G
8A or PVL l
G-R 8
G-R
JLG
R-BN
34 R-BN
3L
BN-R
9
BN-R
4T R-SL 35 R-SL
4R
SL-R 10 SL-R
4A
BK-BL
36 BK-BL
7A
BL-BK
11
BL-BK
4LG
BK-O
37 BK-O
4L
O-BK
12
O-BK
ST
BK-G
38 BK-G
5R
G-BK
13 G-BK
SA
BK-BN
39
BK-BN
6A
BN-BK
14 BN-BK
5LG
BK-SL
40 BK-SL
5L
SL-BK
15 SL-BK
6T
Y-BL
41
Y-BL
6R
BL-Y
16
BL- Y
AG
Y-O
42 Y-O
AB
O-Y
17 O-Y
6LG
Y-G
43 Y-G
6L
G-Y
18 G-Y
7T
Y-BN
44 Y-BN
7R
BN-Y
19
BN-Y
Bl
Y-SL
45 Y-SL
Rl
SL-Y
20
SL-Y
7LG
V-BL
46
V-BL
7L
BL-V
21
BL-V
8T
V-O
47
V-0
BR
O-V
22 O-V
RT
V-G
48
V-G
9L
G-V
23
G-V
CA RST
V-BN
49
V-BN
BL
BN-V
24
BN-V
9T
V-SL
50
V-SL
7R
SL-V
25
SL-V
• Do not connect these leads.
(1) Line position 6 is used for intercom in 601A
system. If this station is to be signaled
by call
announcer, the 6A lead must be connected to
terminal 6 of any row 1 through 10.
(2) The 0-Y lead, terminal 34 on the station
block, supplies AB (A-Battery) to the call an-
nouncer.
(3) Connect a1umper from terminal 35 to any
spare A1/LG terminal clip on the KSU block. If
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
so
3
1-5
4 1-5
5
1-5
6
1-5
6
1-5
7
1-5
10
1-5
11
1-5
12
1-5
. .
13
1-5
14
1-5
17
1-5
18
1-5
19
1-5
.
20
1-5
21 1-5
28
1-5
29 1-5
30
1-5
--
31
1-5
32
1-5
35
1-5
36
1-5
37
1-5
1-10 6 I 1I
liC/\<i
38
1-5
39 1-5
42,44 1-5
(11 ilCMI
43,45
1-5
1ll IIC1\',I
27 2
27 3 12\
-A 1
iLG
13) IICMI
47,49
1-5
1ICM1
--
--
-RG
141
-
RC
(4)
--
--
.
.
40, -l l
SIG
. .
29
6
. .
there are no spare A1/LG clips, this jumper may
be omitted as all LG leads are commoned in the
phone.
(4) Connect RG and RC jumpers as shown to
have CO ringing at this station. If this station is
to have common-audible signaling for CO lines,
connect the RC jumper to all RC terminals at
the KSU block. If this station is to be signaled
by ringer on intercom calls, connect the RC
jumper to the appropriate intercom RT (SIG) ter-
minal.
Page 17

TCI Library- http://www.telephonecollectors.info/
KSP601-00A
Page18
I I
I I
IJ
Install Jumper in B-C to Get 105 Vac Ring Voltage for Ringers. Install Jumper in
A-B
to Get 18 Vac for Buzzers.
Fig.
&-Strapping for Interrupted Signal (Ringer or Buzzers) on Interrupter Card.

TCI Library- http://www.telephonecollectors.info/
5.00 INSTALLATION, TO ADD DIAL INTER-
COM
CONNECTIONS
General
5.01 The following connections must be
made for each intercom station:
T (Tip)
R (Ring
L (Lamp)
LG (Lamp Ground)
SIG (Signal)
RG (Ring Ground)
5.02 All connections are common except SIG.
Individual signal leads must be connected from
each station to the appropriate SIG clip on the
KSU block. Station 10 must connect to SIG "0",
11 to SIG "1 ", 12 to SIG"2", and so forth.
5.03 In addition to station connections: if 5 or
fewer stations are to be connected, install a
jumper from row 27, clip 6 to row 27, clip AG.
This jumper causes ground to appear at all
clips on rows 46 and 48. If more than 5 stations
are to be connected, install a jumper from any
AG clip to the signal ground terminal (B1) on
both sides of all station blocks. This is normally
terminal 40 (YL-SL).
To Use Buzzers for Signaling
5.04 If buzzers are
to be used for signaling, in-
stall a jumper from row 28, clip 6 to row 35, clip
6.
To Use Ringers for Signaling
5.05
If ringers are to be used for signaling, in-
stall a jumper from row 34, clip 6 to row 32, clip
6. (Do not strap 28-6 to 35-6 as instructed in
paragraph 5.04.) A ringing generator must be in-
stalled in the KSU to provide 105 Vac, 30 Hz.
KSP601-00A
To Add Tel-Touch (Tone) Dialing
5.06 To
adapt the intercom for tone dialing, in-
stall the Tel-Touch adapter card (183981-101) on
the intercom card: *
(1) Remove the "W" plug from the intercom
card (see fig. 8).
(2) Place the two cards with components fac-
ing each other and with the small end of the
Tel-Touch card toward the edge connector of
the intercom card.
(3) Insert the two rows of pins on the Tel-
Touch card into the two connectors on the in-
tercom card making sure that no pins slip out-
side of the connectors.
INSTALL DIAL INTERCOM CARD
5.07 Refer
to figure 8 and strap intercom card
as required. Insert the dial intercom card in the
bottom slot of the KSU.
TO ADD DIAL TONE AND RINGBACK TO IN-
TERCOM
5.08
Connect intercom as instructed in
paragraph 5.01.
5.09 Add jumpers to KSU block as shown in
figure 9.
5.10 Return the A-lead associated with the in-
tercom button on each phone to an individual
clip in column 6, rows 1 through 10 as shown in
figure 9.
5.11 Refer to figure 12 and strap the call an-
nouncing card for "Ringback". This is option
A-B.
5.12 Install the call announcing card in the
option slot of the KSU. (Second slot from bot-
tom.)
5.13 Refer to figure 8 and remove X, Y, and Z
straps from the intercom card and reinstall it in
the KSU.
Page 19

TCI Library- http://www.telephonecollectors.info/
KSP601-00A
NOTE 1: The numbers under the Signal Lead
Pins on rows
40 and 41 correspond to the inter-
com number for the station connected to that
pin. EXAMPLE: Under pin 2 or row 40 is a 1, the
intercom number
for the station connected to
that pin will be 11. A (1) precedes the number
under the pin
to produce the intercom number
for that station.
NOTE
2: Refer to Figure 8 for strapping re-
quired on intercom card.
NOTE
3: To have dial tone and ringback on in-
tercom, the
call announcer card must be in-
stalled even
if call announcers are not used.
The
call announcer card is installed in the op-
tion slot, and wiring on the connecting block is
as shown on figure
9. Strap the call announcing
card
for ringback (figure 12).
NOTE 4: For 18 Vac buzzer signaling, install
jumpers 28-6 to 35-6. For 105 Vac ringer signal-
ing,
install jumper 32-6 to 34-6. Do not install
both jumpers.
11 = cu cc·; = = □-:; ~i
- t:.OT ~ 1,S -
c::c:::::::c-:::cr:)~~ l
<O~ 4.6 Al3 ~ ,;:.c.
...,. ~-c::::>--a:::::l-~...J-~ ::::=, !)
c:::::>-~~~--L.'"::J 4
NOTE4
~ ~ r-r;· ~-CI co t:=
CJ~, .I..= ~J a::, ....
G-7 ~-1 ~ ~~ ~- ~ ~"'T":":-,----1--,
~:~-cr::,....~--CI::l·-c::lo=:J
~r.::~-,a:::;..-c.::=>----cr=>--e:::Jct:::::J
"';~I~~~~~:=:~~:;::__.
D::.>- -CT::}-- -C~ CI :} --t:::;;::::J
~ L---r=l- -C.r'l- -Lr1- --t:I::l
[~; I c:~-rr::)-- ..... _r:::J---:--::'.1-r.-:::i
c~·j t:r.J -L8· -~:'.:.l- -c=-l- -r.r.J
c· __ •~ L::}--.-----;- ~--(_'.;__J-.(.":7
BUZZERS
r; Z'. -' -,.;. ""' ""
[s,~
1
11 [-~ ~ ~ /tl Intercom TIP
[_.,:.., Intercom RING
[-~ ....c'-::::.lr--::-.~--:::---:-,-~,-,--.------
[: "T ~ rL-. i.:_-'-}-.r_:_~-tL"_).---<..::_J
- _- -i
L PJ n, i:i-----.i,n_-,,..ci.l ..:'::l·-7 I.C.lompGND
I:_'...? I -.- .._ -- -- A.;. l. C.-Lamp
[__L..t - - - _., B zz r GND
G:> - ·t>7
~- r-L·,. --err-, r...,_-<:.-.>-~ 4.:,~
(--- .,.,
- --~------ ':Cl
Fig. 7-Strapping and Connections for Five Intercom Stations with Buzzer or
Ringer Signaling.
Page20