Bell System Practices AT&T 502 Reference page 27

L I NE
l A ! OR
IA2 KEY
TELEPHONE
S Y STEM
EXTENSION
STATION OR
EXTENSION
LINE RINGER
STRA
OR E
G R
Fig. 17-558F Telephone Set Connections, Wired For 1-Line Pickup and CutoH Extension Station or Extension
BSP 502-S01-102-i02_1971-07-27.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 30, 2012 0 0 : 1 1 : 5 1
W I R E TERMINAL LINE KEY
STRIP
5
(8Kl
( G )
I
9
A 3
*
(0 B K )
R
(W-0)
( 0 )
( B K )
2
( G )
*
( R )
(S-Rl
( Y )
( V )
1 7
20
4
A I O R G R D
D
(BL)
(W)
1 5
0
1 6
0
19
0
Line Ringer
EXCULSION
H I -TYF'E
KEY R I N G E R
4)
(NOTES 3 A N D
( G - B K )
( 5)
(BKl
(W)
(BR)
( Y )
( B L J
( 5 )
d'
( 0 )
($)
3 6 5
( B K l 0fi ( R )
LINE SWITCH
(NOTE 2J
( G l (W)
e
(BKJ
( R )
f
( B R J
( Y )
( 5 )
( Y )
( Y l
NOTES :
REWI RED ACCORDING TO TABLE 0.
2 LINE SWITCH SEQUENCE, HANDSET REMOVED:
be -
ob -
MAKES BREAKS
fg -
MAKES BREAKS
de -
3 . SETS ARE FACTORY WIRED TO PROVIDE BRIDGED RINGING
SERVICE. CONNECTIONS FOR HIB RINGER SHOWN.
R I N G E R I S USED W I R E A S FOLLOWS :
TO
(BKJ 2 OF TERMINAL STRIP
(S) TO K OF NETWORK
(S-R) TO A OF NETWORK
( R ) TO I OF TERMINAL STRIP
REMOVE ( S) STRAP FROM A OF NETWORK AND I OF TERM. STRIP
TO SILENCE RINGER PERMANENTLY, REMOVE
LEAD FROM TERM. 2 , INSULATE AND STORE.
M
I NSULATE AND STORE
OP-
DIAL PULSE CONTACTS
ON-
DIAL OFF-NORMAL CONTACTS
9H 425E
D I A L
NETWORK
STRAP ( M IW CORD
OR E Q U I VA L E N T )
( B L J
RR
B
L
L2 G
I
0 0 0
(W)
(W)
�
�
IF H I A
(BK) RINGER
G3-TYPE
HANDSET
R
GN
! � !
Z;
�
;;;
.,.
�
.,.
rn
!l
0
z
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TPA
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