ISS 1, SECTION 502-502-101
TABLE E
LINE AND RINGER CONNECTIONS FOR 1554B TELEPHONE SETS
TIP PARTY
INDIVID
WIRE OR LEAD
OR
RING
IDENTIFYING GROUND
PARTY
NO IDENT.
BRIDGED
GROUND
10000
2650()
G
1
1
2
2
2
Line Wire
R
2
2
1
1
1
y
3
3
3
3
3
R
K
K
K
K
K
Ringer
BK
1
3
3
3
3
Leads
s
*
*
*
B
*
(Note)
S-R
*
•
•
*
B
BL
•
*
*
*
*
Line
w
Ft
Ft
c
c
c
Switch
BR
c
c
Ft
Ft
Ft
*Insulated and stored.
tMay be terminal
G
in older sets equipped with 4010B networks.
Notes:
1.
(S)
ringer lead may appear on terminal L2 in sets manufactured from
2
1964
to 8
1964.
(BL) ringer lead furnished on
PIA
ringer only.
2.
To silence ringer permanently:
(a) For all classes except tip party with identifying ground, remove (BK) ringer lead,
insulate and store or place on unused terminal.
(b) For tip party with 1000 or 2650 ohm identifying ground, remove (R) ringer lead
insulate and store or place on unused terminal.
TABLE F
MODIFICA liONS FOR 1 A 1 OR 1 A2 KTS
FOR 1554B TELEPHONE SETS
WIRE OR LEAD
DISCONNECT
CONNECT
FROM
TO
s
A
*
Line
y
2
Ll
Switch
BR
c
3
BLt
L2
c
Ot
L2
2
Add
Ml
W
cord or equivalent from
2
to
A
•
Insulated and stored.
t
If leads are not present, strap C to
2 with Ml W
cord.
Note:
For common audible
with lAl or 1A2
KTS.
Connect
81
and (BK) ringer lead to
L2
and
Rl to
K.
Ml W
cord not
required.
BSP 5
0
2
-
5
0
2
-
101
-
i
01
_
1970
·
0
2-
07.
j
p
g
Scanned by Frank Harrell, !Cowboy Frank) Castle Rock, Colorado Jan 30, 2012 22:41:13
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