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8 Alcatel-Lucent 1353 LMS
Flexibility for Diverse Business Requirements
SUPPORT OF MULTIPLE
TOPOLOGIES
Star, ring, tree, point-to-point and
mixed topologies are all supported
by the Alcatel-Lucent Litespan
family. All topologies can be super -
vised from the Alcatel-Lucent
1353 LMS Map Manager. In all of
these topologies, network manage -
ment information can reach the
access nodes from the Alcatel-
Lucent 1353 LMS through either
in-band or out-band mechanisms.
SUPPORT OF MULTIPLE
TRANSPORT OPTIONS
The Alcatel-Lucent 1540 Litespan
and Alcatel-Lucent 1353 LMS
integrate plesiochronous digital
hierarchy (PDH) or SDH transport
mechanisms toward the switching
and data networks. PDH, asynchro-
nous transfer mode (ATM) and
Ethernet transport capabilities are
also in the system. Transport is
supported between Alcatel-Lucent
Litespan exchange units (EUs)
and remote units (RUs) using
HDSL or G.SHDSL transport
protocols, fiber connections or
external leased-line networks.
Equally important, broadband
(xDSL) and narrowband (voice
and leased-line data) traffic can
share the same fiber (SDH STM-1
or STM-4). Broadband (xDSL)
traffic can be routed through STM-1
optical or E3/DS3 electrical inter-
faces toward the ATM backbone.
For its part, xDSL traffic can be
redirected toward the backbone
(typically IP) over Ethernet
(1000Base-SX, 1000Base-LX,
1000Base-EX, 1000Base-ZX and
1000Base-TX). This increases
flexibility when connecting to
the IP data backbone through
metro Ethernet networks. You
can manage all of these transport
options with the Alcatel-Lucent
1353 LMS.