Bell System Practices 43B Installation, Operation And Maintenance Manual page 12

TELEPHONE SET
-
.
E
I ST
CALL
BUTTON
--fd?J
Pu ~
f=
HOLD
KS-15724 LI
DIOOE
LS ~,
4000 KTU
~––-0---
0
0
3
TO KS- 16886L2
TRNSF OR EQUIV
D-161488
v-G) it
1. n
] CONNECTOR
w
I
RING
1
TO
co
TIP
(NOTE 2)
227B KTU
1ST 2N0
PROGRAMMED
PROGRAMMED
~ RESTRICTED MOOE
~ UNRESTR ICTEO MODE
* INSULATED AND STOREO, EXTEND (V-G)
DIAL LEAO TO TERMINAL 39 OF 1ST
229B KTU
NOTES :
1.
2.
FOR COMPLETE CONNECT ION
INFORMAT ION FOR PROGRAMMED
229B KTU'S SEE FIG. 4.
uSE BUSY LAMP CIRCUIT TOGETHER
wITH CONTACT OF 227B KTU wHEN
SPARE LINE SWITCH CONTACT MUST
BE USED FOR A LEAD CONTROL. SEE
SET CONNECTIONS FOR wIRING
KS-15724 LI DIODE.
Fig. 10—43B (MD) Dial, Key Telephone System line and Single Station Use With Optional Mode, Connections