Patent ID: 7539301

Claim:
A digital logger system adapted for receiving and recording audio telecommunication signals, the digital logger system comprising: a multichannel interface circuit for concurrently and continuously receiving audio telecommunication signals for at least two telephone calls, and for continuously transmitting digital audio data extracted from the received audio telecommunication signals, the multichannel interface circuit including: a. line interfaces, equal in number to the number of telephone lines from which the multichannel interface circuit receives audio telecommunication signals, for electronically conditioning the received audio telecommunication signals; and b. at least one COder and DECoder (“CODEC”) which receives conditioned audio telecommunication signals from the line interfaces for converting the received audio telecommunication signals into digital audio data, and for transmitting the digital audio data; a Universal Serial Bus (“USB”) hub for receiving the digital audio data continuously transmitted from the multichannel interface circuit, and for transmitting the digital audio data to a USB root hub; and a personal computer (“PC”) having the USB root hub that is coupled to the USB hub, and which: receives the digital audio data transmitted from the USB hub; and executes PC software that continuously monitors the received digital audio data for: decoding line status and signaling information embedded in digital audio data to determine status of a telephone line including a telephone line “going off hook;” and upon detecting a telephone line “going off hook,” recording both: an audio header that stores information about a telephone call; and an audio file that stores compressed digital audio data for the telephone call.