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Introducing ATM Networking
ANA-5910/5930/5940 User’s Guide
Stock Number: 510694-00, Rev. C Page: 2-3
Print Spec Number: 493081-00
Current Date: 5/28/97 ECN Date: 05/29/97
Scaleable bandwidth
ATM defines how ATM end-stations, such as your PC or
workstation, connect to ATM switches and how ATM switches
interconnect with each other. Because these various connections
consist of dedicated links, their construction (metal wire or fiber
optic) and the transmission speed they support may vary from link
to link. When connections require higher speed, it is usually easy to
upgrade the connection without disrupting other network nodes
and switches, upgrading transmission bandwidth only where
necessary.
Bandwidth guarantees
Whenever one ATM node communicates with another, it uses a
virtual connection that disguises the fact that connections actually
traverse shared media. In this way, ATM networks make it appear
that connections are dedicated. Only if the necessary bandwidth is
available along the entire route does the connection setup complete
successfully. ATM’s guaranteed bandwidth allows connections to
transport audio, video, and image data that is sensitive to time
delays that occur when bandwidth is unpredictable as it is with
Ethernet.
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