Dtmf receiver sense and control arrangement

Details Dtmf receiver sense and control arrangement Dtmf receiver sense and control arrangement

H - Electricity

04

Q

344/25

H04Q 11/04 (2006.01) H04Q 1/457 (2006.01)

Patent

CA 1244538

DTMF RECEIVER SENSE AND CONTROL ARRANGEMENT ABSTRACT OF THE INVENTION The DTMF receiver sense and control arrangement collects and stores multiple customer originated data for determination of customer identification, validity and billing purposes. This arrangement is part of a telecommunications switching office and monitors up to 24 DTMF receivers (channels) to determine whether each channel contains valid data. This data is stored in temporary storage for subsequent transmission to a processor of the switching office. Each of the DTMF receivers asynchronously presents data for collection by this arrangement. This arrangement provides the proper timing required to operate up to 24 receivers to obtain their data, while it is stable at the receiver. Once a receiver transmits data, this arrangement then synchronizes its operation to that receiver so that, sequential monitoring of each of the 24 channels is guaranteed and no loss of valid data will result. In addition, each DTMF receiver may be enabled selectively for special monitoring.

496967

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