Nortel DMS-100 Series Maintenance Manual page 44

1-32 Maintenance overview
Digroup control card
The DCC (NT6X52) is located in slot 05 of the LCA shelf. The DCC allows
the LCA and HIE shelves to communicate. The DCC provides an interface
between its corresponding LCM processor in the LCA and one link control
card (LCC) in the HIE through eight DS30A links, as shown in the
following figure, "RLCM-EDC DS30A to DS-1 interface."
RLCM-EDC DS30A to DS-1 interface
The DCC provides time switching for associating a line card to a given
channel on a DS30A link and provides digital loop-around paths for fault
isolation.
297-8381-550 Standard 02.02 April 1999
HIE shelf
LCC-0
(NT6X73)
To DS-1
interface cards
(NT6X50)
LCC-0
(NT6X73)
LCA shelf 0
DCC-0
(NT6X52)
8 DS30A
DCC-1
(NT6X52)
8 DS30A
LCMP-0
(NT6X51)
To line drawers
(NT6X05)
LCMP-1
(NT6X51)