Bell System Practices AT&T 502 Reference page 26

CENTRAL
SUPL
OFFICE
SEC
LINE
LINE
CIRCUIT
NOTES:
I. REWIRED ACCORDING TO TABLE N .
2. LINE SWITCH SEQUENCE, HANDSET REMOVED:
b e - MAKES
MAKES
de-
3. SETS ARE FACTORY WIRED TO PROVIDE BRIDGED
RINGING SERVICE. CONNECTIONS FOR HIB RINGER
SHOWN. I F HIA R INGER IS USED WIRE AS FOLLOWS:
(BK) TO 2 OF TERMINAL STRIP
(S) TO K OF NETWORK
REMOVE ( S l STRAP FROM
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 30,2012 00:11:19
BSP S02-S01-102-i02_1971-07 -26.jpg
Y
( G - BK)
(G)
::=:=·===·
4. TO SILENCE RINGER PERMANENTLY, REMOVE
o b - BREAKS
g-BREAKS
f
*
ON- DIAL OFF-NORMAL CONTACTS
OP-
(S-R) TO A OF NETWORK
{Rl TO I OF TERMINAL STRIP
OF NETWORK AND I OF TERMINAL STRIP.
A
Fig. 1 6-- 5 58F Telephone Set Connedions, Wired For 1-Line Pickup, Hold, and Secretarial Service
E�������y �EY TERMS. ON
NET.
(G)
(BKJ RINGER LEAD FROM TERM. 2 , INSULATE
AND STORE.
I NSULATED AND STORED
DIAL PULSE CONTACTS
HI-TYPE RINGER 9H DIAL
(NOTES 3 AND 4)
tau
D P
(R)
3650Q
{BKl
LINE SWITCH
( NOTE 2
l
( W)
(Bkl
(R)
(W)
ON (W)
(Y)
O N
!Yl
INSULATED AND STORED
*
DIAL PULSE CONTACTS
O N - DIAL OFF - NORMAL CONTACTS
O P -
425E NETWORK
RR
GN
(BK)
...
"'
TRMTR RCVR
G3-TYPE HANDSET
TPA 478423