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

•Severaloff-the-shelf,optimizedcongurations

•TransmitsEthernetoveranyphysicaluplink

•FastrolloutofcarrierEthernetservices

•Anend-to-end,feature-richsolution

•IntelligentEthernetservicedemarcation

•Leading-edgeservicesoverEthernet

Alcatel-Lucent 1850 TSS-3 Transport Service Switch4

Multiple Applications

Potential applications for the 1850 TSS-3 include:

•Ethernetdemarcation

•Ethernetserviceaggregation

•EthernetoverPDH(EoPDH)

•Ethernetextension

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

Figure3showsthe1850TSS-3inanEoPDH

conﬁguration, installed with CPE in a standard

building or at a cellular tower. In each case, there

isapre-existingcopperconnectioncapableof

carryinganE1/DS1channeloranE3/DS3chan-

nel connected to a legacy synchronous optical

network(SONET)/SDHnetwork.

By inserting the 1850 TSS-3 into the copper

connection,EoPDHisestablished.Ethernet

packetsaremappedtothePDHlinesusinga

standards-compliant mapping mechanism, VCAT/

GFP,withredundancyprovidedbyPDH1+1

protection.IfseveralE1/DS1orE3/DS3linesare

available, they can be bonded together to create

a higher-bandwidth Fast Ethernet (FE) or rate-

restricted GigE pipe.

Figure 3. Ethernet over PDH

InFigure4,the1850TSS-3isintheEthernetextensionconguration.Inthisconguration,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-

sionandphysicalpresence,providingarichmixof

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.

Availableinsixstandardcongurations,the1850

TSS-3offersaexiblemixofcopperandoptical

Ethernet on the customer side, and supports optical

EthernetandEoPDHonthenetworkside.

Key Features

•VersatilemixofFastEthernet(FE)andGigEinterfaces

•AvailableEthernetoverPDH(EoPDH)networkinterfaces

•Trafcclassication,ratecontrolandprioritization

•VLANtaggingandstacking

•Uplinkredundancy

•LinkOAM

•Compact,standaloneorrackmounted

•Standardcongurationssimplifydeployment

In addition, the 1850 TSS-3 supports wire-speed Ethernet switching,

networkredundancyonEthernetandPDHuplinks,andoperations,

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.

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