Patent ID: 6639983
Filing Date: 2003-10-28
Classification: H04M

Abstract:
A computer telephony system comprising:a computer including a controller; a computer telephony interface coupled to the computer; a line driver interface coupled to the computer telephony interface; a private branch exchange (PBX) coupled to the line driver interface; and a digital telephone set coupled to the line driver interface; the line driver interface including: network interface logic; and a universal line driver/receiver (ULDR), coupled to the network interface logic, the PBX and the digital telephone set, to automatically configure the network interface logic, the ULDR to adapt to different transmission and reception voltage levels and to match various telephone line impedances, and wherein the controller of the computer is coupled to the network interface logic and the ULDR, to change, via programming, operational parameters of the ULDR based upon the type of PBX coupled to the ULDR and to monitor and adjust signal levels of signals in the ULDR.