Bell System Practices 1220A, Reference

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ISS 3, SECTION 502-303-10.1
TABLE C
TELEPHONE BASE CONNECTIONS FOR
INDIVIDUAL AND 2-PARTY SERVICE
(SEE READ IN 1.01)
TIP PARTY
INDIV
RING NO
WIRE OR LEAD COLOR
OR
PARTY I DENT
BRIDGED
(NOTE
11
GRD
(NOTE
11
(NOTE
11
Inside
Ring R L2 L2 L1
Wire Tip G
L1 L1 L2
(AC1 only)
TRNSF
y
3 3 3
(Note
3)
TRNSF BK 1 1 1
Mtg Cord
Ring R R R G
at Conn
Tip G G G R
Block
TRNSF
y y y y
(AD1 only)
TRNSF BK B B B
Ringer
R
K K K
Leads
BK L1
3 3
(Note 2)
B B B
Handset Cord
R
c c
c
Jack Leads
(220A only)
G
F F F
Handset Cord
R
c c
F
Jack Leads
(1220A, 2220B only) G F F
c
Notes:
1. If H5AA handset cord is used for other than tip party identifying ground,
disconnect (S) ringer lead from terminal B; insulate and store.
Caution: Do not store spade tipped leads under terminal board mounting
screws.
2. To permanently silence ringer, move (R) ringer lead from terminal K;
insulate and store.
3.
Inside wire will be run directly to terminal board.
BSP S02-303-101-i03_1972-09-15.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 31,2012 22:03:15
WITH
I DENT
GRD
L1
L2
3
1
G
R
y
B
K
3
B
c
F
F
c
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