COLLECT CALL SPEECH SYSTEM, CENTER AND EXCLUSIVE CARD

PROBLEM TO BE SOLVED: To automate a collect call in the collect call speech system in which a speech charge is paid by a called party, its center and its exclusive card. SOLUTION: An exclusive card 3 storing a telephone number of a collect call speech center 10 and a personal ID number is inserted to a telephone set 1 having a card read section 2, automatic dialing is made to the center 10 by using a read telephone number and the user makes entry operation according to a voice message sent from the center 10 via a common line signal network 9. The center 10 receiving the called party telephone number from the caller telephone set 1 applies call control to the called party via the common line signal network 9 and a fact of a collect call is reported to the replied called telephone set 4 in a voice message via the common line signal network 9 and commands the entry of acceptance/non-acceptance. When the called party makes acceptance, a channel between the caller telephone set 1 and the called telephone set 4 is formed by means of control via the common line signal network 9.