Panasonic 1200N - Manual (Page 58)

Traffic Management Software Specifications
5-6 Centillion 1200N ATM Switch User Manual
NTP 297-8103-903
Traffic Management
The ATM Switch provides the following traffic management functions.
■ Call Admission Control
■ Usage Parameter Control
■ Congestion Control
■ Priority Control
■ Shaping
■ Monitoring
Figure 5-5 shows how traffic is controlled and how each function fits into the
process in the ATM Switch.
Figure 5-5: Traffic Management
Call Admission
Control (CAC) 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.
Usage Parameter
Control (UPC) 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.