QoS Offers in IP-over-SONET/WDM Core Networks

• Add more high capacity links such as OC-48/OC-192 and/or WDM

• Add QoS intelligence at IP layer

  • Integrated Services Model
  • Differentiated Services (Diff-Serv) Model
  • MPLS-enabled QoS Service Model

• The approach of adding more BIG pipes is primarily used today by major carriers

  • Does not require to significantly change network management systems, OSS and operations procedures

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