Bell System 500A, Справочник

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SECTION 502-501-101
TABLE D
554A/B, F AND 556A/B TELEPHONE SETi LINE, RINGER, AND TUBE CONNECTIONS
(NOTE 3)
WIRE
OR COLOR
LEAD
R
Ringer BK
Leads
s
S-R
Line Switch
s
426A Tube
R
BK
(3-Element)
y
Line
Wire
Ring R
in
Tip G
Set
Grd y
•
No ground required
Notes:
1. To silence ringer:
TIP
INDIV
RING
PARTY
OR NO
BRIDGED
PARTY
I DENT
GRD
L2 L2 L2
L1 G G
K K K
A
A
A
L2 L2 L2
L2 L2 L1
L1 L1 L2
G*
G G
NEGATIVE (-)
PO)
TIP PARTY IDENT GROUND PARTIES
(NOTE 4)
PARTIES
RINGER REV.
NORMAL WHEN CONN
CONNECTIONS TO L.l. EQUIP. RING TIP RING
TIP
(NOTE
2) (3·5) (2-6)
(3·n
(4-8)
1000fl
2650!1
1000!1
2650!1
K B B
G
G G L2 L2
G B B K G G L2 L2
B K G B A A A A
B G
K B K K K
K
A A A A
L1 or G L1 or G L2 L2
K K K K
L2 L2
G G
L1 L1 L1 L1 L2 L1 L2
L1
L2 L2 L2 L2 L1 L2 L1
L2
G G
G
G G G G G
(a) For the 554A/B and F telephone sets for all classes of service except tip party grd. identification, connect (S) and
(BK) ringer leads on K terminal of 424E network.
(b) For tip party with 1000!1 identification ground, remove the (R) ringer lead from K of network and insulate and
store or connect to spare terminal.
(c) For tip party with 2650!1 identification ground, remove the (S) ringer lead from K of network and insulate and
store or connect to spare terminal.
(d) For the 556A/B telephone set, connect (R) and (BK) ringer leads to K terminal of network.
2. If bell taps on stations connected to long line equipment, use these connections to retain party ground identification.
3. When grounded ringer arrangements are used on 96 volt long line circuits, a D-180036 ringer isolator must be used.
4. See Note 4, Fig. 7.
Page 14
BSP 502-501-101-i03_1972-07-14.;pg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 29,2012 23:45:00