DIALING INTERVAL TRANSMISSION GATING ARRANGEMENT

摘要

A trunk circuit in a customer premisses communication system is adapted for controlling transmission during the MF digit signaling interval when the station dialed MF signals which are converted to pulsed digit signaling. The stations MF signals are detected by the MF receiver (102-1) and a processor (101) is informed of such detection. An outward transmission circuit (106) and an inward transmission circuit (108) are inserted in the four-wire portion of the CO line. These circuits are controlled by the processor (101) in the customer premises communication system such that the outward transmission circuit (106) is opened immediately upon seizure of the line by the calling station and remains open during the entire dialing interval. The inward transmission circuit (108) is opened concurrently with the operation of the digit outpulsing relay (ILC) and remains operated on a digit by digit basis.