| 摘要 |
A traffic source emits packet-based traffic (ATM) carrying a plurality of variable bit rate calls. The traffic is managed by: measuring a parameter of the current traff ic output from the source, using the measured parameter in a comparison with a paramet er which is indicative of available capacity on the link; and providing a contr ol signal for varying the operational state of the traffic source according to the comparison. The operational state can be varied by choosing a combination of a coding rate, selected from a range of coding rates, and selective use of silence suppression. A ce ll policing algorithm can be used, such as the GCRA. The system lowers transmission quality of voice traffic before lowering transmission quality of the data traffic, and uses silence suppression for voice traffic before using lower coding rates for the traffi c source.
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