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- Nortel Network Multiservice Platform User's Guide

ManualsBrandsNortel Networks ManualsServerNTRN10AN
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Operation, administration, and maintenance (OAM) features 2-21
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Figure 2-8
BLSR ring switch example
EX1242p
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Legend
Add/drop multiplexer
One fiber divided into
working and protection
bandwidth
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= Working traffic
= Protection traffic
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W
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P
4
3
12
P
Long path
SD/4/3/L/bridged
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P
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'Bridged' state
'Pass-through'
state
'Pass-through'
state
'Idle' state