Bell System Practices 43B Installation, Operation And Maintenance Manual page 15

i
1SS 4, SECTION 501-165-102
53B DIAL
(NOTf 4 )
[
To
co
+2
OR PBX
*5
&-
I
TO
[+
G
POWER
6
SUPPLY
0-
f5-
(NOTE 7 )
e
(BK )
(BR)
229-TYPC
K TU OR
EQU I VAL[NT
K.EY
TELEPNONE
UNIT
OTE
5)
1
RING
-0
CALL UJTTONS
(MOTE 8)
,
NOTES :
I . TO CONVERTED PICKUP BUTTON USED AS CALL @UTTON.
2. MovE (BR ) TURN6UTTON Lf AD FROM 2R TO SG AT TERMINAL
STRIP. CONNCCT SG GRD AT fQU I PNENT .
3. TO EXTENSION STATION USCD FOR RCSTRICTCD NODE.
SCT MUST BE WIRED FOR A LEAD CONTROL.
USE BUSY LAMP CIRCUIT FOR ALL SETS PER FIG. 10.
4. WIRE S3B DIAL FOR FOLLOWING OPTIONS PER TABLE C:
(A) RINGING START PROTECTION
(B) OTHER OPTIONS AS REQUIRCO
5. LINE CIRCUIT OF CO OR PBX ASSIGNED TO PRESET LINE.
6. CONNECT INSULATED AND STORED (G-V) 53B DIAL LEAD TO TERMINAL I OF OIAL.
7, (BK ) LEAD WAS CONNECTED TO TERMINAL 8 ANO (SR) LCAO TO TERMINAL 4
OF O I AL , PROV 10f O- 161488 CONNECTORS TO EXTEND LEAOS TO KTU .
8. SEC FIG.5 FOR CONNECTIONS OF ADO I TIONAL PROGRAMMED 2296 KTU 'S.
Fig. 13— 53B (MD) Dial, Key Telephone System line and Muhistation Use With Transfer from
Restricted to
Unrestricted Mode, Connections
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