Nortel DMS-100 Series Maintenance Manual page 47

Line cards
The line cards are located behind the BIC card in 4 rows of up to 16 line
cards in each row. The top two rows of line cards form the odd-numbered
LSG, and the bottom two rows form the even-numbered LSG. Normally,
LCA-1 control complex controls the odd LSG of both arrays, and LCA-0
control complex controls the even LSGs of both arrays, using the ten
32-channel P-side ports available on the DCC of each array.
Both the LSGs and the individual line cards in the LSGs are numbered.
LSG numbers in an RLCM-EDC range from LSG-00 through LSG-19. Line
card numbers range from 00 through 31. Using these numbers, the line
cards are uniquely identified and inventoried in the DMS switch central
control (CC) by their line equipment numbers (LEN), as shown in the
following table.
Parts of LEN for RLCM-EDC
Part Description
Site Four-character alphanumeric name that identifies the remote site
where the RLCM-EDC is located. The LEN for a line configured in
the host office has a site name of HOST.
Frame Numeric (00–99) that identifies the RLCM-EDC frame containing
the line card.
LCM Numeric (0) that identifies the LCM in the frame containing the line
card. (The RLCM-EDC contains only one LCM identified as
LCM-0).
LSG Numeric (00–19) that identifies the line subgroup of the LCM
containing the line card.
Circuit Numeric (00–31) that identifies the position of the line card in the
LSG. The following example, table "Example LENs for line cards",
shows how line cards are numbered for identification in an LSG.
Maintenance overview 1-35
DMS-100 Family Maintenance Manual ABSK007