INSIDE
·
P-338886
TERMS
C4A
WIRE
TERM.
ON
RINGER
STRIP
NET.
TIP
(NOTE
3 I
!NOTE II
3
(RI
01
(S-R}
2
0
05
(S
I
06
K
(NOTE II
4
·IBK)
0E1
E2
RING
0
ll
AI(GRD)
A
CONVERSION TO "A" LEAD CONTROL
(C URRENT COLOR CODE)
(SEE TABLE
E)
CONVERSION TO •A• LEAD CONTROL
(MD COLOR CODE)
(SEE TABLE F)
( G)
IBR)
(Y)
(S)
LINE SWITCH
d
b
(NOTE 5
I
(W)
(R)
IBK)
I
I
I
I
I
I
I
[S-R]
[S-BK]
9C, 7CIMOI OR
(NOTE 41
425E
OR
425B(MDI
Gl-
OR
G 3-
70(MO) DIAL
NETW�K
HANDSET
R
!WI
IBLI
TYPE
RCVR
DP
I
I
(G OR
BLI
RR
(W) [S-BR]
IBKI
(W)
(W)
GN
(W)
(R) [S-R]
(BK) [S-BK]
NOTES:
I. TO TIP AND RING FOR INDIVIDUAL LINE RINGER OR TO COMMON AUDIBLE
SIGNAL LEADS FROM EQUIPMENT CABINET.
2. WHEN RINGER IS USED
AS
COMMON AUDIBLE, CAPACITOR CAN BE REMOVED
BY CONNECTING (S) RINGER LEAD TO A OF NETWORK.
3.
MOUNT P-338886 TERMINAL STRIP W ITH P-3 38888 RETAINER AND
P-294615 SCREWS. IF THE ABOVE ARE NOT AVAILABLE, CONNECT
RINGER LEADS WITH 0-161488 CONNECTORS. INSULATE AND STORE
TO AVOID MECHANICAL INTERFERENCE.
4. FOR MANUAL SERVICE, CONNECT TIP OF LINE TO RR TERMINAL OF
NETWORK.
5. LINE SWITCH OFF-HOOK SEQUENCE:
( 1)
bc
.
MAKES
13)
ab BREAKS
( 2)
de
MAKES
(
4) IQ
BREAKS
6. IN SETS WIRED ACCORDING TO MD COLOR CODE, SWITCHING SEQUENCE
IS REVERSED TO PREVENT FALSE HOLDING CONDITION WHEN HANDSET
IS RESTORED, SWITCH CONTACTS be MUST BREAK BEFORE
de
BREAK.
) CURRENT COLOR CODE.
[ ] MD COLOR CODE.
OP-
DIAL PULSE CONTACT
ON-DIAL OFF-NORMAL CONTACT
B-188107
'V
a
ca
.fig. 8--554A/B and F Telephone Sets, Modification for "A" Lead Control.
•
;;;
BSP
502-S01-101-i03_1972..07-15.jpg
Scanned
by
Frank
Harrell, (Cowboy Frank) Castle
Rock, Colorado
Jan 29, 2012 23:45:30
