succeed Portfolio Brief s a service provider, you are in business to be profitable. And to do that, you need to achieve your business objectives—that is, grow already profitable services, add Networks highA revenue streams, and reliably deliver the services customers want. At the same time, you need to optimize investments while converging disparate networks. Multiservice Nortel Networks Multiservice Switch (MSS) portfolio helps you tackle these objectives Switch Portfolio head on.

The challenge The industry consensus is that tomorrow’s communications networks will be based on IP/MPLS. However, this technology is still maturing and will take a few years to realize its full potential. In the meantime, bridge the gap to the future by utilizing Nortel Networks Multiservice Switch portfolio. Converge PSTN, legacy data, IP data, and wireless networks today. Additionally the MSS enables the cost-effective introduction of new revenue-generating services such as Virtual Private Lines. To strategically position the network for the future, use the MSS portfolio to help make the transition seamless and cost-effective.

The solution Nortel Networks Multiservice Switch portfolio offers platforms to meet virtually any need—at both the network core and the edge. More importantly, these switches deliver reliable Layer 2 and Layer 3 services today that generate revenue and promote profitability while offering flexible evolution options for converging diverse networks. (Figure 1)

Multiservice Switch 7400 Designed to deliver services at the network edge, Nortel Networks Multiservice Switch 7400 is ideal for both access adaptation and backbone switching. Features include fully interchangeable cards, any service/any port capability, and V.35/X.21 to OC-3/STM-1 interfaces. In addition to offering models with 3, 5, 8, or 16 slots, the MSS 7400 also features the MSA32 line card that provides industry-leading physical port density and simultaneous support for multiple services. Multiservice Switch 15000 The MSS 15000 addresses the needs of large service provider networks by delivering unsurpassed versatility and support for both edge services and core networking. MSS 15000 combines a high- capacity (40-Gbps) carrier-grade switch fabric, interfaces from channelized DS3 to OC-48/STM-16, standards-based software, and a resilient product architecture to deliver one of the most reliable switches on the market.

Multiservice Switch 20000 Engineered for 70-Gbps to 160-Gbps capacity, the MSS 20000 is a multiservice core switch that addresses the need for increased fabric capacity or trunk speeds. MSS 20000 supports the full range of MSS 15000 interfaces with the ability to handle emerging high-speed interfaces operating at 10 Gbps.

The benefits Nortel Networks Multiservice Switch portfolio allows you to optimize existing investments while transitioning disparate networks to the future.

Profitable services Our Multiservice Switch portfolio enables you to maintain existing Layer 2 services (e.g., ATM, frame relay, IMA) while targeting new growth opportunities and generating new revenue streams with flexible IP-VPN services (e.g., IP-enabled frame relay, RFC 2764, RFC 2547bis). In addition MSS portfolio offers platforms to building a bridge to emerging Ethernet services, MSS provides a foundation for packet voice and wireless data services. to meet virtually any need— at both the network core Flexible evolution and the edge. To ease the evolution from ATM to MPLS, the MSS offers multiple options for network and service interworking. Emerging standards will enable the interworking of Layer 2 services trans- ported over ATM with similar services on an MPLS-based network. Today, MSS-based RFC 2547bis IP-VPNs gain scalability with IP-VPNs offered on an MPLS-based network. When coupled with Nortel Networks Multiservice Provider Edge (MPE), service providers have the added benefit of common traffic management schemes to guarantee end-to-end quality of service.

Multiservice Switch portfolio Figure 1. Multiservice Switches Proven reliability The Multiservice Switch portfolio delivers Wireless Packet Voice carrier-grade reliability for both hardware and software. The MSS 7400, 15000, and 20000 Traditional FR/ATM/ offer nodal redundancy in the form of power, Private Line fan, and common control. Most electrical inter- face modules offer sparing options either on a DSL Multiservice Access aggregation 1-for-1 or 1-for-n basis with the optical inter- MSS 7420 ATM/IP/ MPLS Core faces offering Automatic Protections Switching MSS 7440 MSS 15000 MSS 15000/ (APS) at the line or card level. 20000 IP-VPNs MSS 7480 Software reliability is inherent at the service software or networking software level. The Layer 2 VPNs MSS unique networking software responsibility Optical maintains quality of service expectations when Ethernet Internet network changes occur. The hardware and soft- ware resiliency features allow a service provider maximum flexibility when configuring networks for five 9’s reliability. 2 Common services The MSS portfolio provides common services, as well as common software and network manage- ment capabilities. This commonality saves time and money during network convergence, as well as with day-to-day operations.

Packet voice and wireless applications The Multiservice Switch portfolio's versatility delivers critical value in multiple segments, including voice and wireless networks. Deployed as part of a next-generation network, MSS enables core networking and gateway applications. In the core, MSS delivers reliable, consistent QoS for voice traffic. As a trunk gateway, it offers superior voice processing density, flexibility for both VoIP and VoATM, and a host of voice encoding, compression, and switching features. The Multiservice Switch portfolio also delivers industry-leading packet networking benefits for current and next-generation wireless networks relying on TDMA, GSM, GPRS, UMTS, CDMAOne, and CDMA2000. Also, MSS is ideal for core networking, radio access network aggregation, IP network aggregation, and TDM traffic grooming because it delivers significant savings in both capital and operating expenses.

The bottom line The MSS portfolio offers outstanding value for today and tomorrow. It allows you to protect your future profitability while maximizing existing network investments. And it offers technological maturity, proven OAM&P capabilities, and QoS as you transition voice, data, and wireless networks into the future. Just as important is the fact that MSS is a world-class platform with 40,000 systems already deployed across six continents. As part of a network convergence solution, MSS reduces capital and operating expenses, compared to overlay alternatives, by leveraging existing equipment while bridging the gap to the future.

Figure 2. Multiservice Switch portfolio MSS 7480

MSS 7440 MSS 15000/20000

MSS 7420 MSS 7460

3 Technical specifications ATM services Glossary ATM Asynchronous Transmission Mode, a technology •SVCs, SPVPs, SPVCs, PVPs, PVCs that allows information to be organized into cells •UNI 3.0, 3.1, 4.0 interworking with ILMI 4.0, AINI Circuit Emulation Service (ATM) •Point-to-multipoint (logical and spatial) CES •Inverse multiplexing over ATM (IMA) CO Central Office Virtual Path Termination • DSL Digital Subscriber Line, a high-speed Frame relay services communications transport •FR UNI and NNI (FRF.1, FRF.2) FR Frame relay, a packet-switched protocol PVCs and SVCs • GigE Gigabit Ethernet, a high-speed technology for •FRF.12 support for voice transport LANs, MANs, and WANs •SVC call redirection and hunt groups (FRF.4) Inverse Multiplexing over ATM, a standard for •FR-ATM service and network interworking (FRF.8 and FRF.5) IMA deploying technology •Multilink FR (FRF.16) downspeeding Internet Protocol IP services IP •IP-VPNs (RFC 2547bis BGP/MPLS and RFC 2764/VR network-based Layer 2 Provides the bandwidth and network segmentation VPNS; thousands of VPNs per node) critical for directly connecting users to the network •DiffServ-compliant IP class of service Layer 3 Addresses the need for switching and routing, and •IP-VPN accounting maximizing speed, bandwidth, and flexibility in •IP filtering the network core or aggregation points Routing protocols (OSPF, RIPv1, RIPv2, ISIS, BGP-4, MPBGP-4) • MPLS Multiprotocol Label Switching, a protocol that ATM networking gives service providers control over the IP traffic •IISP, PNNI, AINI flowing through their networks •SPVCs and SPVPs across UNI, IISP, and PNNI interfaces OAM&P Operations, Administration, Maintenance, •PNNI domain-based rerouting and edge-based rerouting & Provisioning •PNNI path and connection trace POS Packet over SONET MPLS networking QoS Quality of Service •Signaling (LDP, RSVP-TE, CR-LDP) Voice over ATM •Routing protocols (OSPF, OSPF-TE, ISIS, ISIS-TE) VoATM Voice over IP Circuit emulation services VoIP •ATM CES 2.0 (AAL-1), structured and unstructured VPN •PVCs, SVCs, SPVCs VR Virtual Routing Packet voice services •VoATM (AAL-1 or AAL-2) and VoIP options •Support for PRI (ANSI/ETSI) and CAS signaling •Toll-quality voice encoding, ITU-T G.711 PCM, G.726 ADPCM or G.729 CS-ACELP •Echo cancellation, silence suppression, comfort noise generation, dynamic downspeeding •Fax and modem support

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