SPECIAL SUBSCRIBER DISPLAY METHOD IN PABX

摘要

The method for displaying the corresponding call signal at the exchange borad when the special subscirber dials the phone comprises steps; (a) supplying the tone signal after recognising the corresponding subscriber through the port number table when the special subscriber hooks off the handset; (b) analysing the received digit; (c) displaying the special subscriber's call state at teh exchange borad if teh receving part is the exchang system; and (d) adjusting the ring cadence to indicate that the call comes from the special subscriber if the receiving part is an inner subscriber.