Bell System Practices AT&T 502 Reference page 20

SECTION 502-501-102
(SIGNALING INCLUDED WITH All FEATURES)
RINGER
IN SET
USED AS
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ffi�
., ;!; .. ..
0 "'
w
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:ow
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�� ��
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•
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1
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1
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1
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1
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1
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1
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2
•
2
(SIGNALING INCLUDED WITH All FEATURES)
RINGER
IN SET
USED AS
�
w
z
:::;
o o.
�
ffi�
"'
w
<O W
w "'
��
z z
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2
2
2
) Current color code.
(
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MD color code.
Page 20
SSP 502-501·102-i02_19 71-07-20.jpg
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558AIB LINE AND RINGER CONNECTIONS
FEATURES
TURN KEY USED TO
CUT OFF
"'
... .. > w
o w .. ..
��
O "'
ffi �
,. w
�!
�
w w
•
•
•
•
•
•
• •
•
558C/D LINE A N D RINGER CONNECTIONS
FEATURES
TURN KEY USED TO
CUT OFF
... ..
..
;i �
o w
�:;
�5
Z "'
o o: ,. o
:o w
�,.
��
�� �
>< ><
ww
;:�
•
•
• •
•
.
• •
•
• •
•
•
•
TABLE K
CONNECTIONS TO
TERMINALS INSIDE SET
C4A
TURN
RINGER LEADS
KEY
(NOTES 2, 3, AND
LEADS
4, FIG. 13)
s
S·R S·G
R B K S·R
L2 L1 L2 L1 K A
K A
L2 L1 3 4
L2 L1 1 2 K A
A A
L2 L1 E 1 E 2
E 1 E 2 3 4 A A
E1 E2 1 2 A A
R L2 L1 K A
GN
L2 L1 1 2 K A
L2 L1 E 1 E2 A A
TABLE L
(INTERNAL CON N ECTIONS)
EXCLUSION
KEY
USED TO
TURN
CUT OFF
KEY
LEADS
"'
0
��
(S·R) (G·8K)
EE
[ ft .Y ]
[S·Gl
•
L1 L2
L2
•
L2 L1 L2
•
L2 L1 L2
L2
L2 L1
.
•
E 1 E2 L2
•
E2 L2
E 1
•
G R L2
•
L1
L2
•
L2 L1
•
L1 E 1
L2
CONNECTIONS FOR INSIDE WIRE I N SET
SIGNAL
LINE 1 LINE 2
CIRCUIT
s
RING TIP RING TIP GRD
L1
L2 5 6
L2 L1
5 6
L2 L1 5 6
L2 L1
5 6
L1
L2 5 6
L2 L1 5
6
L2 L1 5 6
2
1 3 4 5 6
1 2 3 4 5 6
CONNECTIONS TO TERMINALS
INSIDE SET
EXCLUSION
KEY LEADS
5,
(NOTE FIG. 14)
(W)
(BK) (Bl)
(Y) (R)
[G·Yl
L1 5 6 L2
L1 5 6 3
1
L1 5 6
L1 5 6 E 1
L1 5 6 3
L1 5 6 1
6 L2
L1 5
1 2 5 6 1
6 E 1
1 2
E2 5 6 5
COMMON OR
CUTOFF
PRIVATE LINE
CIRCUIT
RINGER
CIRCUIT
RING TIP
R 8
O R R
OR 8
3 4
3 4
3 4 E 1 E2
E1 E2
3 4 E 1 E 2
3 4
E 1 E2
C4A
RINGER LEADS
7, 8,
(NOTES 6, AND
FIG. 14)
(BK)
(S) (S·R)
L1 K . A
4 K A
2 A
K
E2 A A
A A
4
A
2 A
L1 K A
2 A
K
E2 A A
A
6 A