Nortel Meridian 1 Mini-Carrier Remote Description, Installation, And Maintenance page 58

Page 58 of 150 Installation and configuration
P0914209 Standard 3.00 April 2000
Table 6 shows the functions of LMI DIP switch 2 (SW2) at each position:
Table 6
LMI SW2 at U23 functions
Position
1-5
6
7
8
Each position's default is OFF. All boards are shipped configured for a
single- board system, not daisy chained, where the board is physically
connected to both the MMI and SDI. All boards must be specifically
addressed to be a part of a daisy chain.
MMI end and SDI end
For daisy chains with more than two LMIs, all cards not on the ends must
have DIP Switch 2 (SW2), positions 7 and 8, ON. In cases in which there are
three LMIs in the daisy chain, LMI 1and LMI 3 are end cards, each of which
have the special function of providing connectivity to the MMI and SDI,
respectively, for the daisy chain. Card 1 is the card at the MMI end, providing
connectivity to the MMI, and must keep SW2, Position 7 OFF. Card 3 is at
the SDI end, providing connectivity to the SDI, and must keep SW2,
Position 8 OFF.
LMI 2, in cases such as the above, is an intermediate card, connected to
neither the SDI end nor the MMI end. In daisy chains of more than two cards,
all intermediate cards must have both Positions 7 and 8 of SW2 ON for the
system to function properly.
Usage
Binary daisy chain address
OFF (not used)
OFF = MMI End, ON = Not MMI end
OFF = SDI End, ON = Not SDI end