AT&T Bell System 43B Identification, Installation, Operation, Connections, And Maintenance page 15

ISS 4, SECTION 501-165-102
538 DIAL
(NOTE: <4)
2
TO CO
[~
OR PBX
5
~
TO
- - Q
[
10
POWER
6
SUPPLY
(NOTE 7)
(8K)
(8R)
I
I
:=:-:-···
Z29-TYPE:
KTU OR
EQUIVALENT
RING
10
-20~
.·,
I
kEY
TELEPHONE
UNIT
(NOTE 3)
A
A
L
I
LG
:-:-:-:·::
::::::::~~
=~=~=\f
;::::;::;:
::::}~~
CALL I!UTIONS
(IIOTE 8)
(NOTE
I)
TELEPHONE SET
A
A
I
L
LG
:;::::::::
XR
~:ti:~
g
:-:;.;-:::
20
~t}~
g~----4W~®------------~~---
f
8
!J!!:!l
~(N~~:)2)
NOTES:
I. TO CONVERTED PICKUP BUTTON USED AS CALL BUTTON.
z.
MOVE (8R) TURNBUTTON LEAD fROM ZR TO SG AT TERMINAL
STRIP. CONNECT SG GRD AT EQUIPMENT.
3. TO EXTENSION STATION USED fOR RESTRICTED MODE.
SET MUST BE WIRED fOR A LEAD CONTROL.
USE BUSY LAMP
C
I RCU I T fOR All SETS PER f I G. I 0.
<4. WIRE 538 DIAL fOR fOLLOWING OPTIONS PER TABLE C:
(A) RINGING START PROTECTION
(B) OTHER OPTIONS AS REQUIRED
5. LINE CIRCUIT Of CO OR PBX ASSIGNED TO PRESET LIN£.
6. CONNECT INSULATED AND STORED (G-V) 53B DIAL LEAD TO TERMINAL I Of DIAL.
7. (8K) LEAD WAS CONNECTED TO TERMINAL 8 AND (BR) LEAD TO TERMINAL 4
Of DIAL, PROVIDE D-161<488 CONNECTORS TO EXTEND LEADS TO KTU.
8. SEE fiG.5 fOR CONNECTIONS OF ADDITIONAL PROGRAMMED 229B KTU'S.
Fig. 13-538 (MD) Dial, Key Telephone System Line and Multistation Use With Transfer from Restricted to
Unrestricted Mode, Connections
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