Transport Service Switch
A versatile network termination unit
The Alcatel-Lucent1850 Transport Service Switch(TSS-3)is a carriergrade network termination unit (NTU). Providing a rich mix of connectivity and network services options, it is available in aone-rackunit size, mountable in a wall, rack, cabinet ortable-topsetting.Customer-sideEthernet or Gigabit Ethernet (GigE) interfaces can be aggregated and transported through copper or fiber using native Ethernet or Ethernet over Plesiochronous Digital Hierarchy (PDH). With its rich management and QoS features, theAlcatel-Lucent1850TSS-3forms a strong foundation for offeringend-to-endEthernet services.
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•Transmits Ethernet over any physical uplink
•Fast rollout of carrier Ethernet services
•Intelligent Ethernet service demarcation
•Leading-edgeservices over Ethernet
Versatility, to meet customer needs
Customers are using IP-basedapplications and services at anever-increasingrate, compelling service providers to converge network infrastructure into an integrated framework capable of supporting very high bandwidth,packet-basedservices. This infrastructure must also be capable of broaching the first and last mile.
The Alcatel-Lucent1850TSS-3meets this need by offering Ethernet access using fiber or copper. The 1850TSS-3is a member of theAlcatel-Lucent1850 Transport Service Switch portfolio, a family of products that is helping businesses move gradually from anall-circuitenvironment to anall-packetenvironment, in incremental and affordable steps.
With worldwide appeal, the 1850 TSS-3is afuture-safe,carrier-classEthernet switch and NTU. The device’s versatility is demonstrated by itsnetwork-sidecapability of transporting first and last mile (or further) aggregated traffic using fiber or copper.
Alternatively, the 1850 TSS-3can be configured as a connection between thecustomer-sideLAN and theservice-providerWAN, offeringrate-limitingand othercost-optimizingfunctionalities. The use of smallform-factorpluggable (SFP) modules for fiber connections offerscost-effectiveand scalable functionality common to the entire 1850 TSS family.
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Potential applications for the 1850 TSS-3include:
•Ethernet service aggregation
•Ethernet over PDH (EoPDH)
In Figure 1, the 1850 TSS-3is in the Ethernetdemarcation role, with the demarcation point shown as a dotted line, representing the point where traffic crosses from thecustomer-owned
Figure 1. Ethernet demarcation
equipment to the service-provider-ownedcustomer premises equipment (CPE). At the demarcation point, the 1850TSS-3accepts the 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).
(Ethernet or MSPP
WDM – Wavelength Division Multiplexing
MSPP – Multiservice Provisioning Platform
In Figure 2, the 1850 TSS-3is in an Ethernetservice-aggregationconfiguration, in this case acting as acarrier-classEthernet switch, accepting multiple inputs from the customer side and aggregating them for onward transmission on the network side.Network-sideredundancy can be provided by Rapid Spanning Tree Protocol or Ethernet dual homing, two methods for providing automatic backup paths.
Figure 2. Ethernet service aggregation
(Ethernet or MSPP
CWDM – Coarse Wavelength Division Multiplexing
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Figure 3 shows the 1850 TSS-3in an EoPDHconfiguration, installed with CPE in a standard building or at a cellular tower. In each case, there is apre-existingcopper 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-3into the copperconnection, EoPDH is established. Ethernet packets are mapped to the PDH lines using a standards-compliantmapping 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 ahigher-bandwidthuplink.
Figure 3. Ethernet over PDH
Ethernet over E3/DS3
Ethernet over E31/DS1
In Figure 4, the 1850 TSS-3is in the Ethernet extension configuration. In this configuration, 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
GigE/FE with EFM OAM
(Ethernet or MSPP
GigE with EFM OAM
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Ethernet service management
The 1850 TSS-3goes beyond simple media conver-sion and physical presence, providing a rich mix of connectivity and network services, offering diagnostics, service monitoring, protection, quality of service (QoS), rate limiting and VLAN stacking for Metro Ethernet Forum(MEF)-compliantEthernet services.
Available in a number of standard configurations, the 1850 TSS-3 offers a flexible mix of copper and optical Ethernet on the customer side, andsupports optical Ethernet and EoPDH on the network side.
In addition, the 1850 TSS-3supportswire-speedEthernet switching,network redundancy on Ethernet and PDH uplinks, and standardsbased operations, administration and maintenance (OAM). Hard ware-based Ethernet OAM provides precise QoS measurements for superior SLA support.
With multiple off-the-shelfconfigurations and applications, theAlcatel-Lucent1850TSS-3offersnew-servicerevenue streams at a very competitive price. It comes with rich functionality, includingdiscovery and auto-negotiation of OAM, link monitoring and remote fault indication.
The 1850 TSS-3acts as a fullynon-blockingEthernet switch, includingrate-controlandcontrol-protocolprocessing rules. It also offers Ethernet QoS, as defined by the service provider, at the CPE demarcation point. Service differentiation becomes possible andtime-sensitivetraffic is given precedence. Finally, a variety of redundancy schemes are available, depending upon the application chosen. All this makes theAlcatel-Lucent1850TSS-3a leading CPE device.
•Versatile mix of Fast Ethernet (FE) and GigE interfaces
•Available Ethernet over PDH (EoPDH) network interfaces
•Traffic classification, rate control and prioritization
•VLAN tagging and stacking
•Hardware-basedEthernet service OAM(ITU-TY.1731)
•Ethernet in the First Mile (EFM, IEEE 802.3ah) and Con- nectivity Fault Management (CFM, IEEE 802.1ag)
•Compact, standalone or rack mounted
•Standard configurations simplify deployment
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Recognized world leader in optical networking
Alcatel-Lucentdeliversend-to-endcommunications solutions to service providers and enterprises anywhere in the world. Leveraging its networks equipment as well as services,Alcatel-Lucentfacilitates its customers’ service offerings and revenue streams. As the recognized world leader in optical networking,Alcatel-Lucentis in a unique position to help service providers navigate through current market conditions.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.
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www.alcatel-lucent.com Alcatel, Lucent,Alcatel-Lucentand theAlcatel-Lucentlogo are trademarks ofAlcatel-Lucent.All other trademarks are the property of their respective owners. The information presented is subject to change without notice.Alcatel-Lucentassumes no responsibility for inaccuracies contained herein. Copyright © 2008Alcatel-Lucent.All rights reserved.