Bell System Practices 831 Series Installation & Maintenance Instructions Manual page 8

SECTION 503-702-101
tlABLE
Dt
PICKUP SIGNAL KEY CONVERSION [831DM(MD). 831FM, 2831DM(MD) , OR 2831FM TELEPHONE SET)
CONVERSION OPTION
647AH5 KEY LEADS
(NOTE I
BL
I
BL
I
BL BL-BK BR -BK BK -BR
BK -BL R-G W-S
HPPPPPPPPP
17
17
17 11 11 11
HPPPPPPPPS
Connected via internal mounting
17
17 17 11 11 27
HPPPPPPPSS
cord wiring and terminated on
17 17 17 11 27 27
Term. 7 and can not be converted
HPPPPPPSSS
to signaling.
17 17 17 27 27 27
HPPPPPSSSS 17 17 27 27 27 27
HPPPPSSSSS 17 27 27 27 27 27
Note:
Move (0-Y) mounting cord lead from terminal 12 to terminal 27. For sixth signal conversion
strap terminal 27 to a spare terminal and move the (BL-BK) signal lead from 17 to spare terminal selected.
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