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Click here for DQSA and no routers
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- Carriers have invested billions in SDH, e.g., local loops, SONET and optical switches plus inter-city fiber. Revenue is derived from “leasing” use of these facilities to customers.
- Increasingly the traffic is in the form of packets. The carriers then expend hundreds of millions more on routers to “steer” the packets over the desired synchronous circuits to reach destinations. These routers increase both capital and maintenance costs.
- Corporate customers are provided VPNs (Virtual Private Networks). Five color-coded networks, representative of the tens of thousands of such networks supported by AT&T, MCI, and others, are shown. But end-to-end guaranteed bandwidth is difficult to provision.
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DQSA Eliminates Routers and Provides Superior Service
Click here for SDH with routers
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- Carriers utilize only their basic SDH synchronous plant, e.g., T1, DS3, OCx. No routers.
- Customers are provided with virtual or physical private networks, service superior to that provided using routers.
- DQSA priorities mean that carrier can offer premium low-latency service for game playing, etc.
- Fixed bandwidth synchronous circuits are commingled with packet traffic and can be provisioned by the customer in milliseconds.
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Last modified:
May 19, 2004
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