Nortel Networks NTRN10AN Blsr networks 2-fiber, OPTera Metro, STS or 5376 VT, Switching matrix

2-10Operation, administration, and maintenance (OAM) features

Figure 2-2

OPTera Metro 3500 bandwidth management architecture with VTX-series circuit pack

EX0810t

OPTera Metro 3500

STS-48 equivalent bandwidth optical interface (slot 11)

192 STS or 5376 VT	STS-48 equivalent
	bandwidth optical
Switching matrix
	interface (slot 12)

STS-3 or STS-12 equivalent bandwidth for tributary slots 3 to 10

Figure 2-3

OPTera Metro 3500 bandwidth management architecture with STX-192 circuit pack

EX1491p

STS-192 equivalent bandwidth optical interface (slot 11)

OPTera Metro 3500
768 STS	STS-192 equivalent
	bandwidth optical
Switching Matrix	interface (slot 12)

STS-1, STS-3, STS-12 or STS-48 equivalent

bandwidth for tributary slots 3 to 10

BLSR networks (2-fiber)

OPTera Metro 3500 supports 2-Fiber BLSR networks in its protection scheme and configuration portfolios.

A 2-Fiber bidirectional line-switched ring (BLSR) is a ring network of nodes interconnected by a pair of fibers. Like the unidirectional path-switched ring (UPSR), the BLSR provides 100% restoration of restorable traffic for single failures by reserving 50% of the ring’s capacity for protection. Consequently,

a2-Fiber OC-48 or OC-192 ring effectively has a span capacity of STS-24 and STS-96 respectively.

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