LINE SEIZURING & DIALING METHOD IN PREARRANGEMENT

摘要

The method reserves stationary line by registering a stationary line seizure digit and target phone number on a memory in a private branch exchange and dials the registered phone number automatically when stationary line is detected to be free. The method includes the steps of: (A) checking stationary trunk state; (B) sending busy tone to a transmitter when a trunk is occupied and checking that reserving key is input; (C) storing stationary line seizure and phone number on a memory when the reserving key is input; (D) checking trunk state periodically till a trunk becomes free; (E) checking that the reserved phone number is in idle state; (F) sending digit of the reserved phone number through a trunk when the reserved phone number is in idle state; and (G) sending ring signal and reserved phone number digits to a transmitter who reserving the phone number.