Bell System Practices 43B Installation, Operation And Maintenance Manual page 13

v
i
(D
I 14
-1
TO POWER
SLIWLY
[
—
TO TERA4 37
1sT 229S
KTU
1
TO 1ST
CALL
4
SUTTON
NOTES:
.++Q3
iJ=f -
Q' q
c,
2.61 3
K5
4
5-2 R2
8 1000
Q2
22
> (BL) (NOTE 4)
Iv) (NOTE 5)
(BK)
L
C3
/ F ~. CR4i i=
K2 w
HOME
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2.
3.
4.
5.
6.
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8.
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— .—
——
— —.—
— ——— ——
I
11
II
~!
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1 0 9876
I . HEAVY CIRCUIT LINES ARE ON THE SCANNER SIOE OF THE LOGIC BOARD.
I I
DASHED CIRCUIT LINES ARE ON THE PULSER SIDE OF THE LOGIC BOARD.
I I
13'2 ~543. 11
PULS I NC AND SCANNING fUNCT 10NS ARE ACCDMPL I SHED BY MEANS OF
CIRCULAR PATHS ON THE LOGIC BOARO AND NDV I NG CONTACT BRUSHES.
I
I
I ARGF ALPHABETICAL DES I GNAT 10NS REFER TO INTERFACE CONNECT 10NS
L ----
. . .
BETWEEN LOG I C BOARO ANO COMPONENT BOARO.
TO STOP OIAL FOR SECOND DIAL TONE AFTER 1ST DIGIT MOVE (BL )
LEAO FROM TERMINAL 3 TO TERMINAL 8.
TO STOP DIAL FOR ADDITIONAL DIAL TONE AFTER 2ND OR 3RD DIG ITS
)#3VE (V) LEAD FROM TERMINAL 3 To TERMINAL 8. FoR 'Top 'FTfR 2ND
DIG IT,3RD DIGIT NUST BE PROGRAMMED FOR A "U".
WHEN THE RINGER IS CONNECTED IN THE EXTERNAL SCT, CONNECT (S-R)
LEAO TO TERMINAL 2 TO PREVENT K4 RELAY FROM OPERATING ON
RINGING CURRENT.
TO INCREASE LOOP cuRRENT THROUGH o I AL ON LONG LOOpS (0vER 400
OHNS ), CONNECT (S) LEAD To TERMINAL 2-
10 CHANGE
FROM RESTRICTED MODE TO UNRESTRICTED MOOE:
-14
~ TAL K
SCANNER 6,.4
I—_——_——.———_–––.
J
K2,
*
(s) (NOTE 7)
1. ,
I
7
@ 12
I
KI
TIP ~2
T
*
IJ
.'".
I
R7 C5
710
)
:K2
1.0
(S-R)
K3
In
*
47 "X<
-+- -
TIP -
1
w
TO CO
(N0TE61 R4
2
5B
OR PBX I
c1
c
20.000
1.01-
.- . ..-—
,, . ,-
(A) NOVE (BR) LEAD FROM TERMINAL 4 TO 8
(B) k43vE (BK) LEAEI FROMTERMINAL 8 To 4
[. i:'d~; 'cm
~K4d
D
(C) HOVE EXTERNAL TELEPHONE SET LEAD (TIP) FROM TERMINAL
~
RING ~5
: ?G
(G-v)
I TO 12.
*
ILJ3
R8 A
9. [v-G) LEAD 1S INSULATED Am sToREolN olAL usE D-16148B cc'NNEcToR
470
6m RING
TO EXTEND LEAO.
/
% SPAOE TIPPEO LEAO, INSULATED AND STOREO
RV I RV2
TO
TEL
SET
Fig. 11 —43B (MD) Dial Connections, Factory Wiring, Restricted Mode