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1152700 • Issue 1 • February 2001 • Section 2 Operations and Maintenance
Page 2-289
© 2000, ADC Telecommunications, Inc.
DLP-765
Page 3 of 3
Table 765-1. Card Protection Schemes
CARD TYPE PROTECTION SCHEME REQUIREMENTS
NMIC 1:1 Cards required at Gateway Node installed in adjacent
slots. Working card in slots 2 and 3, protect card in slots
4 and 5. The ring network may operate with a minimum
of one card but redundancy is recommended.
SC 1:1 Cards required in all Cellworx STN shelves, working
in slot 1, protect in slot 18. Shelf may operate with a
minimum of one card but redundancy is recommended.
622 Ring Card N/A All ring nodes must have cards installed in slots 16 and
17. Optical paths redundant though RICs which perform
Automatic Virtual Path Switching (AVPS).
155 CRS 1+1 Cards must be installed in adjacent AIC slots starting
with an even number. Dual port cards support two
separate interfaces. If configured for SEPIC operation,
the protection scheme MUST be set to Bi-directional.
T3 CRS 1:N (N≤ 3) Three ports per card will switch to protect with a single
port failure. One group of contiguous slots across the
backplane up to four total cards per group.
T3 TMUX Multi 1 /
T3 EXP
1:N (N = 1) One set of cards can be protected by a second set, or a
single T3 TMUX can be protected by a redundant T3
TMUX.
T1 Multi 1 1:N (N≤ 8) One group of contiguous slots across the backplane up to
nine total cards per group.
E1 Multi 1 1:N (N≤ 8) One group of contiguous slots across the backplane up to
nine total cards per group.