VOICEBAND DATA SET

摘要

: The present invention relates to a data set. The data set includes a receiver which is operative for recovering far-end data from a data signal representing the far-end data and received from a voiceband telephone channel. The receiver includes a plurality of individual circuits each of which has at least two selectable operating modes. An initialization unit is provided which is operative for placing at least ones of the circuits in respective initial ones of the operating modes. A background unit is operative, subsequent to initialization. the background unit includes a monitor for monitoring predetermined signals within the data set and operative in response to a determination from the values of ones of the monitored signals that a fault exists in the data set for providing a fault indication. A unit is provided for generating an interrupt signal in response to the initial reception of the data signal, An interrupt service unit is provided, operative in response to the interrupt signal for suspending the operation of the background means and for controlling the operating modes of at least ones of the receiver circuits in such a way as to effect start-up operation of the receiver,