PURPOSE: To send and display information stored in an exchange or arbitrary information prepared into a prescribed information content at an ISDN subscriber terminal based on the request by an ISDN subscriber terminal equipment.

CONSTITUTION: An information read-out state is set between an ISDN subscriber terminal equipment 2 and an exchange 4. The designating information from many kinds and plural information in an exchange data equipment 8 is read out through the exchange 4 and sent and displayed on the ISDN subscriber terminal equipment 2 by means of a designated read-out control signal from the ISDN subscriber terminal equipment 2.