Digital telephone communication for facsimile machine - using logic system which recognises large amount of data, alerting receiving terminal, and opening two channels to increase data rate

摘要

The transmitter terminal receives a transmission instruction (101) and records the digital words for transmission in a memory (102). If the number of words exceeds a predetermined value (103), two channels are opened, otherwise interchange across a single channel (112) takes place. If the word level is exceeded, a signal is emitted to the receiving terminal (106). The receiving terminal confirms that two channel operation is to be used by returning another signal (107). Following this, the digital words are transmitted at the faster bit rate (108). Following this the call is disconnected (109). ADVANTAGE - Reduces possibility of not being able to connect to receiving terminal.