Bell System Practices AC1 Reference page 11

I
INS OE
t
WIRE
STA GRD
{NOTE II-------
TO
( Y )
DIAL
LIGHT
( B K)
TRNSF
TIP
NOTES:
1.
STATION GROUND MAY BE OMITTED
NOT REQUIRED FOR PROTECT
2.
LINE SWITCH OFF-HOOK SEQUENCE:
be ab
CLOSES
de
j k
CLOSES
3.
DISCONNECT (BL) LEAD FROM T!:RMINAL B WHEN HSAA HANDSET CORD
IS USED AND TIP PARTY IDENTIFYING GROUND IS NOT PROVIDED,
INSULATE AND STORE.
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 31,2012 22:01:32
S02-303-101 -i03_1972-09 -ll.jpg
LINE
TCH
2)
Sill ( N OTE
( B l)
(0)
( G )
3)
{NOTE
soon •
' , ' , . ' , . i
•
.
(BK)
•
•
.
.
•
. . . , • • . • . • . .
· . ·
' . ' ,, · b
,
� .
.• .• • .
!r
NOT REQUIRED F'OR
I
ON OF Dl AL L1 GHT TRANSFOR�ER.
OPENS
CLOSES
Fig. 18-AC1 Telephone Base Wiring Diagram (Early Model)
TERMINAL
BOARD
( B K)
F
( G )
Ll
MESSAGE
WAIT lNG
����
STRAP
G
.....
' ' if
0
4. L
SERVICE;
A P AND R£5 IS TOR ARE PART
CORD ONLY M
(Y] LEAD IS NOT TERMINATED IN (MESSAGE
5.
SET \/IRED FOR INDIVIDUAL OR BRIDGED RINGING,
FOR All OTHER CLASSES OF SERVICE REFER TO
RINGER CONNECT
*
I NSULATEO AND STORED
t
WHEN USED WITH KTS{Y)INSIDE WIRE LEAD BECOMES
"AI" LEAD AND {BK)INSIDE WIRE LEAD BECOMES "A" LEAD.
SEE TABLES E AND F FOR ADDITIONAL CONNECTIONS.
ISS 3, SECTION 502-303-101
4)
E
(Y]
, ,
, ,
, ,
, ,
, , , , , ,
OF"
HSAO HANDSET
WAITING FEATURE).
PLUG.
SET
I
ON TABLE.
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