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July 1999
Setting the DIP switches for multiple HLCs
Introduction
If your system consists of more than one Meridian HomeOffice II Line Card, the
cards must be set up in one of the two following configurations to be a
functioning daisy chain:
a two-card configuration
a more than two-card configuration
For the daisy chain to function properly, each card must have a unique address,
as set with positions 1–6. Also, one card in the daisy chain must be designated as
the MMI end, using position 7, and one card must be designated as the SDI end,
using position 8.
Two HLCs
In any HLC daisy chain, the first card, HLC 0, is located at the MMI end. That
is, it provides connectivity to the MMI for all cards in its daisy chain. Plug 2 of
HLC 0's HLC Multi-I/O cable (see the illustration on page 45) connects either
directly to the MMI, or to the MMI Extension cable. (See "MMI extension
cable" on page 47.) DIP Switch 1, position 8, of HLC 0 must be set to ON.
The last card in any HLC daisy chain is located at the SDI end. That is, it
provides connectivity to the SDI for all cards in its daisy chain. Plug 3 of its
HLC Multi-I/O cable (see the illustration on page 45) connects either directly to
the SDI, or to the SDI Extension cable. (See
48.) DIP Switch 1, position 7, of this HLC must be set to ON.
Line Card Configuration Guide
Hardware installation
SDI EXTENSION CABLE,
on page
37
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