Legacy equipment makes it difficult for
businesses to scale their networks to meet
ever-changing demands for increased
capacity and new high-bandwidth services.
Upgrading the capacity of a traditional
SONET ring can be a time-consuming
and expensive process, often requiring
the replacement of thousands of dollars’
worth of equipment. Deploying new rings
could be even more complex and difficult
to manage, with even further investment
in additional central office equipment to
terminate the ring and to switch traffic
throughout the network.
As a next-generation SONET solution,
the Alcatel-Lucent 1677 SL eliminates
scaling-limitation issues and additional
ring-upgrade complexity. The Alcatel-
Lucent 1677 SL provides for future expan-
sion as bandwidth needs grow within
metropolitan and regional networks. When
a new service offering is created, Alcatel-
Lucent clients can increase support for
hundreds of subtended rings from the
same NE and from a variety of interfaces,
to support the myriad offerings that they
will want to provide.
The ability to grow networks with
an installed base of equipment provides
businesses with rapid returns on their
investments and saves operational and
engineering expenses. Key functionality,
such as OC-192, VT1.5 grooming and
transmultiplexer support, allows Alcatel-
Lucent clients to get ahead of their
competition when rolling out next-
generation services. On-board, point-to-
point DS0 grooming eliminates the need
for a second NE or for inter-machine
trunks. No competitor’s solution beats
the Alcatel-Lucent 1677 SL for integrated
functionality.
Scalability for Increasing Capacity

BANDWIDTH MANAGEMENT

Successful businesses efficiently manage bandwidth and network resources.
As large metropolitan and regional networks evolve to support hundreds
of rings and terabytes of capacity in a region, it is imperative that they
have the power and flexibility to switch and groom end-customer services
in the most resource-efficient way possible. This means taking small,
disparate feeds that are currently transported inefficiently and combining
them into appropriately sized trunks to maximize return on investment.
The Alcatel-Lucent 1677 SL grooms traffic by taking circuits from
multiple interfaces and switching them onto one pipe for transport across
the network. The Alcatel-Lucent 1677 SL supports STS-n (n = 1 to 48c)
grooming to make the most efficient use of the carrier’s network infra-
structure (see Figure 1). Additionally, two optional modules provide DS0
and VT1.5 switching capability, allowing fine-grain bandwidth manage-
ment. Full-featured wideband and narrowband grooming are also possible
with this modest-sized platform using the transmultiplexing card, and
carriers may deploy this capability as needed.
In contrast to the traditional centralized model, the multi-ring termina-
tion and bandwidth-grooming capabilities of the Alcatel-Lucent 1677 SL
fit the emerging optical network model that disperses bandwidth manage-
ment to the edge of the network.
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
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1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
VT
1.5
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1.5
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1.5
STS-n Matrix
STS-1
Figure 1 - Bandwidth Grooming
ALCATEL-LUCENT >3