Blsr Networks (2-Fiber) - Nortel NTRN10AN Planning Manual

2-10 Operation, administration, and maintenance (OAM) features
Figure 2-2
OPTera Metro 3500 bandwidth management architecture with VTX-series circuit
pack
STS-48 equivalent
bandwidth optical
interface (slot 11)
Figure 2-3
OPTera Metro 3500 bandwidth management architecture with STX-192 circuit
pack
STS-192 equivalent
bandwidth optical
interface (slot 11)

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,
a 2-Fiber OC-48 or OC-192 ring effectively has a span capacity of STS-24 and
STS-96 respectively.
OPTera Metro 3500 Multiservice Platform
OPTera Metro 3500
192 STS or 5376 VT
Switching matrix
STS-3 or STS-12 equivalent bandwidth
for tributary slots 3 to 10
OPTera Metro 3500
768 STS
Switching Matrix
STS-1, STS-3, STS-12 or STS-48 equivalent
bandwidth for tributary slots 3 to 10
NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
EX0810t
STS-48 equivalent
bandwidth optical
interface (slot 12)
EX1491p
STS-192 equivalent
bandwidth optical
interface (slot 12)