Methods to prevent post and Telecommunications conflicts when booking medical lines on private exchanges

摘要

The method transmittes the ring signal to the subscriber who reserved the stationary line and makes the stationary line free. When a call signal is transmitted through the stationary line, the method stops the reserved ring and re-registor the subscriber again and processes the in coming ring signal so that the incoming and autgoing ring signals are not collided. The method includes steps; (A) checking the free stationary line; (B) checking that the reserved subscriber is free; (C) recording the occupation of the free line on the corresponding memory and transmitting the ring signal to the corresponding subscriber; (D) checking the incoming ring signal through the free stationary line; (E) stop the ring signal to the subscriber, removing occupation frag of the inner line and re-regiatering the reservation; and (F) executing the in coming reing signal.