METHOD AND SYSTEM FOR INTEROPERATING BETWEEN ISDN AND PSTN TRANSPORT FOR ALLOWING SIMULTANEOUS TRANSMISSION OF VOICE AND DATA OVER ONE TELEPHONE LINE

摘要

A telephone system simultaneously transmits voice and data through a public switched telephone network and over one telephone line between a calling party location having an ISDN connection and a destination party location having a POT S analog connection. The calling party location determines if the calling party l ocation has an analog POTS connection and then creates a connection between the calling party and the destination party. Data and voice band signals are packetized and multi plexed and transmitted through the public switched telephone network to a modem located at the destination party location. The packets are demultiplexed into separate voi ce band and digital signal components and the digital signal components demodulated with in the modem. The demodulated data signals are forwarded to a data terminal and voice band signals forwarded to an analog terminal.