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關於本產品
Telephone line converter module provides the talk battery,ring generation and off hook detection necessary to operate a standard telephone;it also provides the ring detection and line seizure needed when connecting to a pbxstation or co trunk;on board is a 2-wire to 4-wire hybrid that separates the transmit and receive audio paths;the board also contains a pulse code modulator and demodulator which converts the audio signals into a serial bit stream;the use of compandors further refine the quality of the audio;the output is 4-wire 600 ohm audio or synchronous serial data via a rs-422 interface;an on board clock generator is provided (selectable data rate from 28kbps to 256kbps) or the system will accept an external clock signal