DNX Cross-Connect Platform - LightRiver Technologies

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PRODUCT BRIEFSingle-Chassis Circuit/Packet SupportDNX-11/88 platforms equipped with Sycamore’s innovativeCircuit/Packet eXchange (CPX) IP interface providesingle-chassis support for circuit and packet traffi c (up to1,024 DS0 or 32 T1/E1 virtual WAN connections) and areinteroperable with Ethernet/PPP-compliant routers and SS7signaling elements (STP and SCP). The CPX module setenables a seamless transition from TDM to IP technologyin both fi xed line and mobile networks, and solves manyoperational challenges of signaling network migration fromSS7 to Sigtran.Carrier-Class ManageabilityAs a true carrier-class product, the DNX complies with NEBSLevel 3 and offers an array of network management options.Operations personnel can perform confi guration, provisioning,and a variety of diagnostic tests from a menu-driven userinterface or through ENvision Plus, the comprehensivemanagement platform for DNX networks. Either approachprovides an embedded, multi-level security scheme through acraftsperson interface, Telnet/IP, SNMP, or dial-up interfaces.Audit trails, circuit naming, and confi guration uploads anddownloads are just a few of the available features.Integrated Test Access and DiagnosticsThe test access and diagnostic features embedded in everyDNX product add value through quick resolution of networkoutages, helping operators comply with strict service levelagreements. When deployed in conjunction with external TAD/FAD test heads, the DNX can also be integrated with existingnetwork diagnostic facilities. The innovative IP/Ethernet testaccess features on the CPX module set bring all the circuitbased,carrier-grade diagnostics and test facilities of DNXplatforms to packet-switched networks.Cost-Effective ScalabilityDNX scalability enables network operators to rapidlyprovision service on cross-connects that are right-sized forinitial deployment. As the network grows, the extensibleDNX platform scales in physical port count and throughthe use of higher capacity transmission media. This allowsfor an economical initial build-out and provides exceptionalinvestment protection. An operator can migrate from theDNX-11 to the S-DNX without discarding any component,since all DNX platforms use common modules, chassis, powersupplies, and application/interface modules.DNX-11: Network Building BlockA workhorse serving network operators worldwide, theDNX-11 brings DCS functionality to smaller or remote locationswithout sacrifi cing carrier-class reliability, interface fl exibility,or growth options. Populated with any mix of module setsacross 11 slots, the DNX-11 terminates services from as manyas 88 T1/E1, 6 DS3, 7 E3, or 2 OC-3/STM-1 interfaces. Thenon-blocking switching capacity of 168 T1/128 E1 equivalentsoccupies only 6 rack units (RU) of vertical space. With a CPXIP interface, the DNX-11 enables a smooth, cost-effectivemigration from TDM to IP, by consolidating circuit/packetprocessing in a single platform. And, as the network growsbeyond DNX-11 capacities, one hundred percent of the initialcapital outlay can be reused in a DNX-88 confi guration.DNX-88: Multiservice FlexibilityThe exceptional density and proven reliability of the DNX-88enables network operators to push core network functionscloser to the network edge. The DNX-88 leverages allnarrowband and broadband interfaces in the DNX portfolio,including T1/E1, T1/E1 APS, T3/E3, and OC-3/STM-1. A1.2 Gbps switching fabric provides excellent midrange DCSscalability (from 8 to over 600 T1, 500 E1, 24 fully loaded DS3,30 E3, or up to 8 fully loaded OC-3/STM-1 interfaces), groomsmultiservice traffi c with full granularity to DS0 levels, and satisfi esmost applications in less than one standard bay. Intelligentbandwidth management enables port consolidation on costlyservice delivery platforms; and backhaul facility concentrationthat reduces costs and extends the life of core resources.S-DNX: Scalability for GrowthThe S-DNX high-capacity cross-connect provides four timesthe port capacity of the DNX-88 (up to 2,688 T1 or 2,304E1 ports). Because the S-DNX non-blocking 4.8 Gbps switchis constructed from standard DNX components, operators withDNX-11/88 networks can retain and reuse all existing chassis,power supplies, controllers, and line cards. DNX-11/88platforms can be upgraded to S-DNX, or S-DNX systemsadded to existing DNX-11/88 networks, without disruption.In fi xed line and mobile environments, S-DNX empowersseamless expansion options and pay-as-you-grow strategiesfor DNX networks.Investment Protection*◘ Management Controllers◘ Application Modules◘ Interface Modules◘ Equipment Nests◘ Power SuppliesSystemCapacitiesDNX-11DNX-88*S-DNX*T1 88 660 2688E1 88 536 2304T3 6 24 96E3 7 30 128OC-3/STM-1 2 8 32Data 80 640 2560Figure 2: Scalability and Investment ProtectionWith minimal front-end investment, a network operator can rapidlyprovision services on right-sized platforms; then scale seamlessly fromDNX-11 to S-DNX to accommodate growth.2
Versatility to Meet Evolving Application RequirementsDNX Cross-Connects enhance a variety of multiserviceapplications in fi xed line and mobile networks. Here are a fewexamples.Service Platform ConcentrationOptimizing network traffi c enhances the effi ciency and usefullife of voice and data service delivery platforms, includingmultiservice switches and voice gateways. By concentratingthe traffi c associated with these platforms, DNX conservesports on high-priced network elements and reduces bothcapital expenditures (CapEx) and operating expenses (OpEx).In today’s central offi ces and service POPs, the need toadd newer services such as IP/MPLS VPN, DSL, and VoIPto existing services such as Frame Relay, ATM, and circuitswitchedvoice has expanded the number and variety ofservice delivery platforms – and resulted in partially fi lledcircuits taking up expensive ports on those platforms. Forexample, an IP VPN or VoIP provider may be wasting T1/E1or T3/E3 ports on edge routers, backbone routers, and VoIPgateways as a result of sub-optimal bandwidth grooming.Deployed to ‘front-end’ service delivery platforms, DNXgrooms and concentrates the traffi c that feeds them,reducing the number of ports required in the expensivesystems by increasing subscriber traffi c per port. DNX alsoprovides important OAM&P features that do not exist onservice delivery platforms. All of this translates into reducedcapital outlays for service delivery equipment, reduced rackspace requirements, better overall bandwidth/port utilization,and streamlined operations and maintenance. DNX platformsdon’t replace service delivery platforms – they make thembetter and more cost-effective.Gateway OfficeVoiceSwitchT1T3DNX-11T1DomesticNetworkInternationalNetworkFigure 3: DNX International Gateway ApplicationNetwork operators use the service interface fl exibility, density, andintelligent bandwidth management of DNX platforms to optimizeinternational gateway locations, enhance global network services, andcost-effectively scale service bandwidth to handle increasing global traffi c.Robust protection and restoration options also make theDNX a true carrier-class solution for grooming, aggregating,and converting multiple traffi c types at international gatewaylocations (Figure 3). At any site, the embedded diagnostics inDNX platforms minimize truck rolls and the need to collocatecostly test equipment.Bandwidth-Efficient Remote GroomingDNX remote grooming and access concentration (e.g., at thenetwork edge and in unmanned collocation facilities) reducesrecurring costs by allowing faster, more fl exible serviceprovisioning and more effi cient backhaul into the central huboffi ce. Reducing or eliminating the need for narrowband DCSplatforms at the central site further conserves space andcurtails maintenance costs. DNX enables network operatorsto realize incremental revenues from new services in outlyingareas, where subscriber densities may initially be too low tojustify an investment in multiple, geographically dispersedvoice/data platforms.E1E3Collocation SpaceHub Office Wire CenterDNX-11Voice/Data/VideoMultiserviceSwitchDNX-88DNX-11MDFT1/E1FT1/FE1Multi-Tenant BuildingFigure 4: Cost-Saving Remote Groomingand Platform ConcentrationDNX platforms can be deployed at a varietyof locations (e.g., remote end offi ces, ILECcollocation space, commercial multi-tenantbuildings) to enable more effi cient backhaulinto the central hub offi ce – and dramaticallyreduce recurring costs.LocalBackboneIP RouterIPVoice SwitchPSTNCross-ConnectEnd OfficeDNX-11FT1/FE1Remote CustomersFT1/FE13
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DNX Cross-Connect Platform - LightRiver Technologies

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