| 摘要 |
A system for conducting simultaneous information exchange such as polling, in which a number of individual pre-programmed telephone interface units (TIU) (12) transmit predetermined voice messages over individual telephone lines (14) and receive information transmitted from the other ends of said telephone lines (14). Each TIU (12) operates independently once connected to an individual telephone line (14) and stores the recipient responses. A master unit (MU) (10) is provided which has a computer program for setting up the format, designating the telephone numbers to be called by the TIUs (12) and storing the results. Each TIU (12) has its own microprocessor (42) and acts independently once it receives a telephone number from the MU (10). |
