1152700 • Issue 1 • February 2001 • Section 2 Operations and Maintenance
Page 3 of 3
Table 765-1. Card Protection Schemes
CARD TYPE
NMIC
SC
622 Ring Card
155 CRS
T3 CRS
T3 TMUX Multi 1 /
T3 EXP
T1 Multi 1
E1 Multi 1
PROTECTION SCHEME
1:1
1:1
N/A
1+1
1:N (N≤ 3)
1:N (N = 1)
1:N (N≤ 8)
1:N (N≤ 8)
REQUIREMENTS
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.
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.
All ring nodes must have cards installed in slots 16 and
17.Optical paths redundant though RICs which perform Automatic Virtual Path Switching (AVPS).
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
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.
One set of cards can be protected by a second set, or a single T3 TMUX can be protected by a redundant T3 TMUX.
One group of contiguous slots across the backplane up to nine total cards per group.
One group of contiguous slots across the backplane up to nine total cards per group.
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© 2000, ADC Telecommunications, Inc.
