VERFAHREN UND SCHALTUNGSANORDNUNG ZUM ÜBERPRÜFEN DER EINHALTUNG VORGEGEBENER ÜBERTRAGUNGSBITRATEN IN EINER ATM- VERMITTLUNGSEINRICHTUNG

摘要

The check is carried out with the aid of counting devices (RAM1, ALU) operating according to the "leaky bucket" principle which are assigned individually to virtual links passing via the switching equipment (VA). The instantaneous counter readings of these counting devices are in each case decremented, only when a data cell of the respective virtual link is received, by a variable counting value which is proportional to the time difference between the arrival time of the respective data cell and the arrival time of the data cell immediately preceding it on the same virtual link. The transmission rates specified for the virtual links are allocated to defined bit rate classes. With the aid of this allocation, an individual proportionality factor is calculated for each of the virtual links which is used for the duration of the respective virtual link to calculate the variable counting value.