Call interception system of mobile communication system

Abstract

Abstract PURPOSE:To improve circuit operation efficiency by shortening an ineffective circuit holding time by performing forcible interception because of no coin at both a mobile station equipped with a public telephone set and a control station at the same time, in a mobile communication system. CONSTITUTION:When remaining enqueued coils are all spent, a telephone set TELp sends a coin request tone to a receiver immediately and also sends a no-coin signal to a mobile station TS. When a charging signal arrives from a control station MS while the no-coin signal is being supplied to the mobile station TS, the mobile station TS sends an interception signal to the control station MS immediately and also disconnects the talking circuit of the telephone set TELp forcibly and immediately to send a busy tone, etc. so that interception control at a control station MS side and that at a mobile station TS side are exercised nearly at the same time.

Inventors

• 👤 Yoshiyasu Oba

Bibliographic Details