Importance

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Abstract

An ATM switch including a switch unit routing an ATM through an ATM connection; a controller controlling the quality of the ATM connection; and a memory for storing a quality control identifier for linking declared information concerning ATM connection quality, which is included in a call signal requesting the setup of the ATM connection, with a capability identifier for identifying the capability of the controller. The controller controls the ATM connection quality based on the capability corresponding to the capability identifier designated based on the quality control identifier obtained from the declared information. If the quality requested in the declared information is changed due to a change in an advisory promulgated by an advisory organization, a different capability identifier can be assigned by changing or adding to the setup of the quality control identifier in accordance with the updated quality.

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First Claim