Bell System Practices Plant Series Reference page 8

.. ..
D
"'G
D e
G
: ..
WIRE OR LEAD
Incoming Line at
71B Conn
Block
Ringer Leads
(Note 2)
Line Switch
Strap Connections
Notes:
1. Use normal connections for tip party identification. If bell taps on station connected to long line equipment. reverse ringer leads as shown in this column
to retain tip party identification.
2. To silence ringer permanently when connected for:
Individual, ring party, and tip party without identifying ground- remove (S-R) strap from A of network and connect to 2 of TBl.
•
or
1000!1 2650!1
•
( ) Current color code.
[ ] MD color code.
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 31, 2012 22:27:29
BSP S02-706-100-i01_1970-03 -08.jpg
LIN!: A N D RINGER CONNECTIONS
COLOR
Tip (G)
Ring
(R)
GRD (Y)
(R)
(BK)
(S)
(S-R)
(S J
(W)[S -S]
(BR)[S-BR]
(BK)
(S-R)
(W)
GRD- remove (S) line switch lead from A of network and insulate and store.
TABLE D
$'!DIY I DUAL
RING TIP
OR
PARTY PARTY
BRIDGED
1 1 1
2 2 2
3 3 3
R R GN
1 1 1
K K K
2 2 2
R R R
F F F
c
c c
GN to 1 1 to y 1 to Y
A to 2 A to 2 A to 2
TIP PARTY WITH IDENT GRD
NORMAL RINGER REVERSAL
CONNECTIONS (NOTE I)
1000 2650
1000
OHMS OHMS OHMS
2 2 2
1 1 1
3 3 3
L1 B 2
y L1 1
B
K y
2 2 L1
A A A
c c
c
F F F
1 to B
B to 2 Y to 2 B to 2
L1 to K L1 to B L1 to K
"'
m
n
...
0
z
"'
s
�
8
2650
OHMS
2
1
3
y
1
L1
2
A
c
F
1 to K
2 to B
L1 to B