| Patent Number |
Title Of Patent |
Date Issued |
| 6693997 |
Host computer digital signal processing system for communicating over voice-grade telephone chan |
February 17, 2004 |
| A conventional computer is coupled to an analog telephone transmission link by means of an analog/digital conversion interface adapter. Modem transmission is accomplished by performing the modulation and demodulation functions digitally in the computer's existing processor which executes |
| 6636519 |
Network access method and network access server therefor |
October 21, 2003 |
| Apparatus and method for enabling bilateral transmission of digital data between a local area network and telephone company networks employing both analog and digital telephone lines. A modem modulates signals responsive to signals from a local area network representing an outgoing call |
| 6097794 |
Host computer digital signal processing system for communicating over voice-grade telephone chan |
August 1, 2000 |
| A conventional computer is coupled to an analog telephone transmission link by means of an analog/digital conversion interface adapter. Modem transmission is accomplished by performing the modulation and demodulation functions digitally in the computer's existing processor which executes |
| 5912888 |
Digital network access server |
June 15, 1999 |
| Apparatus and method for enabling bilateral transmission of digital data between a local area network and telephone company networks employing both analog and digital telephone lines. A modem modulates signals responsive to signals from a local area network representing an outgoing call |
| 5872836 |
Host computer digital signal processing system for communicating over voice-grade telephone chan |
February 16, 1999 |
| A conventional computer is coupled to an analog telephone transmission link by means of an analog/digital conversion interface adapter. Modem transmission is accomplished by performing the modulation and demodulation functions digitally in the computer's existing processor which executes |
| 5841842 |
Telephone call routing and switching techniques for data communications |
November 24, 1998 |
| A method of processing incoming digital telephone calls from remotely located call originators which are destined for receipt by a host computer system. The host computer system is linked to the telephone network by a network access server. The call originators may be any type of data |
| 5832277 |
System for arbitrating demand on memory during configuration of a computer add-on card |
November 3, 1998 |
| A processor on an add-on card that arbitrates demand on a memory unit on the add-on card. The processor and memory unit are used for the underlying functionality of the add-on card. The processor determines an appropriate time to allow interface operations to the memory unit when the mem |
| 5761281 |
Telephone call routing and switching techniques for data communications |
June 2, 1998 |
| A method of processing incoming digital telephone calls from remotely located call originators which are destined for receipt by a host computer system. The host computer system is linked to the telephone network by a network access server. The call originators may be any type of data |
| 5724413 |
Host computer digital signal processing system for communicating over voice-grade telephone chan |
March 3, 1998 |
| A conventional computer is coupled to an analog telephone transmission link by an analog/digital conversion interface adapter. Modem transmission is accomplished by performing the modulation and demodulation functions digitally in the computer's existing processor which executes programs |
| 5646983 |
Host computer digital signal processing system for communicating over voice-grade telephone chan |
July 8, 1997 |
| A conventional computer is coupled to an analog telephone transmission link by an analog/digital conversion interface adapter. Modem transmission is accomplished by performing the modulation and demodulation functions digitally in the computer's existing processor which executes programs |
| 5577105 |
Telephone call routing and switching techniques for data communications |
November 19, 1996 |
| A method of processing incoming digital telephone calls from remotely located call originators which are destined for receipt by a host computer system. The host computer system is linked to the telephone network by a network access server. The call originators may be any type of data |
| 5528595 |
Modem input/output signal processing techniques |
June 18, 1996 |
| Apparatus and method for enabling bilateral transmission of digital data between a local area network and telephone company networks employing both analog and digital telephone lines. A modem modulates signals responsive to signals from a local area network representing an outgoing call |
| 5008901 |
Asymmetrical duplex error-controlled modem |
April 16, 1991 |
| A modem for connecting data terminal equipment (DTE) to a remote DTE via a general switched telephone network or leased lines at data rates of 300, 1200 and 2400 bps using standard modulation techniques, and additonally providing virtual full duplex transmission capability at 9600 bps us |
