Alcatel-Lucent 1850 TSS-3 Manuale utente
Alcatel-Lucent
1850 TSS-3
Transport Service Switch
A Versatile Network Termination Unit
Alcatel-Lucent 1850 TSS-3 Transport Service Switch2
The Alcatel-Lucent 1850 Transport Service Switch (TSS-3) is a carrier-
grade network termination unit (NTU). Providing a rich mix of connectiv-
ity and network services options, it is available in a one-rack unit size,
mountable in a wall, rack, cabinet or table-top setting. Customer-side
Ethernet or Gigabit Ethernet (GigE) interfaces can be aggregated and
transported to a central office or node through copper or fiber, using
Ethernet or Plesiochronous Digital Hierarchy (PDH). The 1850 TSS-3 can
be used to form the basis of an end-to-end Ethernet service. It may
also provide Internet Protocol (IP) over Ethernet or over PDH.
Alcatel-Lucent 1850 TSS-3 Transport Service Switch 3
Versatility, to Meet Customer Needs
Customers are using IP-based applications and services at an ever-increasing rate, compelling service
providers to converge network infrastructure into an integrated framework capable of supporting very
high bandwidth, packet-based services. This infrastructure must also be capable of broaching the
first and last mile.
The Alcatel-Lucent 1850 TSS-3 meets this broaching need by offering up to 3 Gb/s of Ethernet in
the first and last mile, using fiber or copper. The 1850 TSS-3 is a member of the Alcatel-Lucent 1850
Transport Service Switch portfolio, a family of products that is helping businesses move gradually
from an all-circuit environment to an all-packet environment, in incremental and affordable steps.
With worldwide appeal, the 1850 TSS-3 is a future-safe, carrier-class Ethernet switch and NTU.
The device’s versatility is demonstrated by its network-side capability of transporting first and last
mile (or further), aggregated traffic using fiber or copper. When fiber is available on the network
side, the 1850 TSS-3 can join directly to the Metro-Ethernet domain.
Alternatively, the 1850 TSS-3 can be configured as a connection between the customer-side LAN
and the service-provider WAN, offering rate-limiting and other cost-optimizing functionalities.
The use of small form-factor pluggable (SFP) modules or 10 Gb/s form-factor pluggables (XFPs) for
fiber connections offers cost-effective and scalable functionality, functionality common to the entire
1850 TSS family.
Key Benefits
•Severaloff-the-shelf,optimizedcongurations
•TransmitsEthernetoveranyphysicaluplink
•FastrolloutofcarrierEthernetservices
•Anend-to-end,feature-richsolution
•IntelligentEthernetservicedemarcation
•Leading-edgeservicesoverEthernet
Alcatel-Lucent 1850 TSS-3 Transport Service Switch4
Multiple Applications
Potential applications for the 1850 TSS-3 include:
•Ethernetdemarcation
•Ethernetserviceaggregation
•EthernetoverPDH(EoPDH)
•Ethernetextension
In Figure 1, the 1850 TSS-3 is in the Ethernet-
demarcation role, with the demarcation point
shown as a dotted line, representing the point
where a single stream of traffic crosses from
the customer-owned equipment to the service-
provider-owned customer premises equipment
(CPE). At the demarcation point, the 1850 TSS-3
accepts a single traffic stream on the customer
side and transports this traffic to one or more
network elements in a carrier Ethernet network.
This application offers fault diagnostics and
monitoring, traffic rate limiting and virtual
LAN (VLAN) stacking (capability of offering
multiple, discrete VLANs over a single connection).
Carrier Ethernet
Network
(Ethernet or MSPP
or WDM-based)
Demarcation Demarcation
1850 TSS-3 1850 TSS-3
WDM – Wavelength Division Multiplexing
MSPP – Multiservice Provisioning Platform
Figure 1. Ethernet Demarcation
In Figure 2, the 1850 TSS-3 is in an Ethernet service-aggregation configuration, in this case acting
as a carrier-class Ethernet switch, accepting multiple inputs from the customer side and aggregat-
ing them for onward transmission on the network side. Network-side redundancy can be provided
by Rapid Spanning Tree Protocol or Ethernet dual homing, two methods for providing automatic
backup paths.
Figure 2. Ethernet Service Aggregation
Metro Ethernet
Network
(Ethernet or MSPP
or CWDM-based)
Demarcation Demarcation
1850 TSS-3 1850 TSS-3
CWDM – Coarse Wavelength Division Multiplexing
Alcatel-Lucent 1850 TSS-3 Transport Service Switch 5
Figure3showsthe1850TSS-3inanEoPDH
configuration, installed with CPE in a standard
building or at a cellular tower. In each case, there
isapre-existingcopperconnectioncapableof
carryinganE1/DS1channeloranE3/DS3chan-
nel connected to a legacy synchronous optical
network(SONET)/SDHnetwork.
By inserting the 1850 TSS-3 into the copper
connection,EoPDHisestablished.Ethernet
packetsaremappedtothePDHlinesusinga
standards-compliant mapping mechanism, VCAT/
GFP,withredundancyprovidedbyPDH1+1
protection.IfseveralE1/DS1orE3/DS3linesare
available, they can be bonded together to create
a higher-bandwidth Fast Ethernet (FE) or rate-
restricted GigE pipe.
Figure 3. Ethernet over PDH
InFigure4,the1850TSS-3isintheEthernetextensionconguration.Inthisconguration,electrically-
based FE or GigE is converted to optical Ethernet for transmission over longer distances than are
possible with copper lines. Transmission complies with the Ethernet in the first mile (EFM) standard,
bringing the service provider’s Ethernet domain right up to the customer’s building or cell site.
Figure 4. Ethernet Extension
1850 TSS-3Ethernet/
FE/GigE Service Provider
Equipment
Ethernet over E3/DS3
Demarcation
Wireless Access
Equipment
Customer
Equipment 1850 TSS-3Ethernet/
FE/GigE
Ethernet over E31/DS1
Legacy PDH/SDH
Network
1850 TSS-3Ethernet/FE
Service Provider
Equipment
GigE/FE with EFM OAM
Demarcation
Wireless Access
Equipment
Customer
Equipment 1850 TSS-3Ethernet/FE
GigE with EFM OAM
Metro Ethernet
Network
(Ethernet or MSPP
or CWDM-based)
Alcatel-Lucent 1850 TSS-3 Transport Service Switch6
Versatility and Scalability
The 1850 TSS-3 goes beyond simple media conver-
sionandphysicalpresence,providingarichmixof
connectivity and network services, offering diagnos-
tics, service monitoring, protection, quality of service
(QoS), rate limiting and VLAN stacking for Metro
Ethernet Forum (MEF)-compliant Ethernet services.
Availableinsixstandardcongurations,the1850
TSS-3offersaexiblemixofcopperandoptical
Ethernet on the customer side, and supports optical
EthernetandEoPDHonthenetworkside.
Key Features
•VersatilemixofFastEthernet(FE)andGigEinterfaces
•AvailableEthernetoverPDH(EoPDH)networkinterfaces
•Trafcclassication,ratecontrolandprioritization
•VLANtaggingandstacking
•Uplinkredundancy
•LinkOAM
•Compact,standaloneorrackmounted
•Standardcongurationssimplifydeployment
In addition, the 1850 TSS-3 supports wire-speed Ethernet switching,
networkredundancyonEthernetandPDHuplinks,andoperations,
administration and maintenance (OAM) functions to provide the
basis for end-to-end Ethernet service.
With multiple off-the-shelf configurations and applications, the
Alcatel-Lucent 1850 TSS-3 offers new-service revenue streams at
a very competitive price. The initial purchase price is low, and
both customer-side and network-side connections can be added
when needed, on a scalable basis. It comes with all the functionality
required, including discovery and auto-negotiation of OAM, link
monitoring and remote fault indication.
The 1850 TSS-3 acts as a fully non-blocking Ethernet switch, including
rate-control and control-protocol processing rules. It also offers
Ethernet QoS, as defined by the service provider, at the CPE demarca-
tion point. Service differentiation becomes possible and time-sensitive
traffic is given precedence. Finally, a variety of redundancy schemes
are available, depending upon the application chosen. All this makes
the Alcatel-Lucent 1850 TSS-3 a leading CPE device.
Alcatel-Lucent 1850 TSS-3 Transport Service Switch 7
Recognized World Leader in Optical Networking
Alcatel-Lucent delivers end-to-end communications solutions to service providers
and enterprises anywhere in the world. Leveraging its networks equipment as well
as services, Alcatel-Lucent facilitates its customers’ service offerings and revenue
streams. As the recognized world leader in optical networking, Alcatel-Lucent is in
a unique position to help service providers navigate through current market condi-
tions. Alcatel-Lucent, with its global reach and scale, combined with local presence
in over 130 countries, leverages a deep understanding of global market dynamics,
as well as the ability to anticipate local requirements.
www.alcatel-lucent.com
Alcatel, Lucent, Alcatel-Lucent and the Alcatel-Lucent logo are trademarks of Alcatel-Lucent. All other
trademarks are the property of their respective owners. The information presented is subject to change
without notice. Alcatel-Lucent assumes no responsibility for inaccuracies contained herein.
© 2008 Alcatel-Lucent. All rights reserved. WLN2468071137 (01)
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