Bell System Practices Plant Series Reference page 6

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llNE
WIRE
NOTES.
I.
IN SETS OF EARLY MANUFACTURE,($) LINE SWITCH LEAD WAS CONNECTED TO R
AND {0) TO BK OF P44E055 MOUNTING BLOCK.
[0-0J
SET I S FACTORY WIRED FOR BRIDGED RINGING.
2.
SERVICE REFER T O TABL,E
3. SET MAY B E USED WITH IAI OR IAZ K TS.
MOOIFtCAT!O NS.
4. LINE SWITCH OFF-HOOK
(l)bc
CLOSES
(4)
(2lde CLOSES (5) fg OPENS
131 jk CLOSES
I NSULATED AND STORED
M
( l
CURRENT COLOR CODE OR 38 CORD REEL
M D COLOR CODE OR 3A CORD REEL.
( J
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 31, 2012 22:26:45
BSP S02·706-100-i01_1970·03 -Q6.jpg
MTG DIE LINE
BLOCK RINGER SWITCH
ASS'I' OR
04BN-
3
CORD
ll
(NOTE
(0 )(0-0]
*
{8L) [S-BL]
*
FOR OTHER CLASSES OF
Ql
REFER TO TABLE 8 FOR THESE
SEQUENCE
ob
OPENS
Fig. 5-1750-Type Telephone Set Connections With 25A3 Dial (MD)
40108 OR 40100 NETWORK
G3K HANDSET
25A3 DIAL
(0-BKl
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