Panasonic 1200N User Manual

The ATM Switch provides the following traffic management functions.

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Call Admission Control

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Usage Parameter Control

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Congestion Control

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Priority Control

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Shaping

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Monitoring

 shows how traffic is controlled and how each function fits into the

process in the ATM Switch. 

When a SVC establishment request signaling is received from the originating
terminal, CAC, or Call Admission Control, determines whether to accept that
request. CAC checks the current usage of the network to determine whether the
communication band and traffic quality requested by that SVC can be satisfied,
then decides whether to establish the connection. 

UPC, or Usage Parameter Control, monitors whether the traffic of the user’s
communication in progress has exceeded the band declared in the request for SVC
establishment. This control is necessary to prevent deterioration to the quality of
the communications of the user and other users in the network. 

The ATM Switch employs a six-stage parameter control using the dual leaky
bucket method.