Nortel Networks NTRN10AN, 3500 manual Virtual ring path-in-line and shared VT-managed STS, Stxw/Stx

2-178Operation, administration, and maintenance (OAM) features

Figure 2-65

Virtual ring (path-in-line) and shared VT-managed STS

EX1549p

VT#1,

A STS-1 #1

OM3500

OC-3/12/48

UPSR ring

OM3500

C

VT#2,

STS-1 #1

Legend

UPSR, 2 way (unprotected)

OM3500OM3500

(W/STX)(W/STX)

Working

time slots

Backbone

Network

Working

time slots

OM3500OM3500

(W/STX)(W/STX)

UPSR, 2 way (unprotected)

B D

OM3500

OC-3/12/48

UPSR ring

OM3500

= OM3500 tributary circuit pack = Path bridge & select

=Traffic A - B, VT#1, STS-1 #1 on a virtual ring (path-in-line), working

=Traffic A - B, VT#1, STS-1 #1 on a virtual ring (path-in-line), protected

=Traffic C - D, VT#2, STS-1 #1 on a virtual ring (path-in-line), working

=Traffic C - D, VT#2, STS-1 #1 on a virtual ring (path-in-line), protected

Note: For simplicity, only one direction is shown.

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004