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Class Information
Number: 379/93.32
Name: Telephonic communications > Telephone line or system combined with diverse electrical system or signalling (e.g., composite) > Having transmission of a digital message signal over a telephone line > By voice frequency signal (e.g., tone code) > Modulated audio tone > Protocol > Initial setup
Description: Subject matter including a particular start-up handshaking sequence.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7587034 |
Use of modem on hold for network management and telephone access |
Sep. 8, 2009 |
| 7535887 |
Packetizing telecommunications switch |
May. 19, 2009 |
| 7519168 |
Host computer digital signal processing system for communicating over voice-grade telephone channels |
Apr. 14, 2009 |
| 7499532 |
Method and system for communicating information to a caller on a telephone network by superimposing an audible information message over a dial tone |
Mar. 3, 2009 |
| 7433068 |
Digital transmitter device |
Oct. 7, 2008 |
| 7423785 |
Job recovery for scan to email |
Sep. 9, 2008 |
| 7417943 |
Dynamic compression training method and apparatus |
Aug. 26, 2008 |
| 7418084 |
Systems and methods for third-party call control |
Aug. 26, 2008 |
| 7305072 |
Method and apparatus for quick modern reconnect |
Dec. 4, 2007 |
| 7277531 |
Method and apparatus for fast V.90 modem startup |
Oct. 2, 2007 |
| 7206338 |
Modem command interface for radio devices |
Apr. 17, 2007 |
| 7142649 |
Dedicated data modem system and method |
Nov. 28, 2006 |
| 7130395 |
Method and system for reducing cross-talk and avoiding bridged taps |
Oct. 31, 2006 |
| 7062022 |
Method and apparatus for fast V.90 modem startup |
Jun. 13, 2006 |
| 7027573 |
Method and apparatus for quick modem reconnect |
Apr. 11, 2006 |
| 6985566 |
Point of sale modem for high-speed communications |
Jan. 10, 2006 |
| 6922467 |
Quick connect parameter exchange |
Jul. 26, 2005 |
| 6901138 |
Digital communication system using telephone line and initializing method thereof |
May. 31, 2005 |
| 6842509 |
Signaling mechanism for modem connection holding and reconnecting |
Jan. 11, 2005 |
| 6839413 |
Method and system for data communication |
Jan. 4, 2005 |
| 6819749 |
Method and apparatus for fast V.90 modem startup |
Nov. 16, 2004 |
| 6801533 |
System and method for proxy signaling in a digital subscriber line access multiplexer (DSLAM) |
Oct. 5, 2004 |
| 6782082 |
Method and system for reducing cross-talk and avoiding bridged taps |
Aug. 24, 2004 |
| 6778595 |
ADSL modem |
Aug. 17, 2004 |
| 6768791 |
Method and apparatus for quick modem reconnect |
Jul. 27, 2004 |
| 6760368 |
Fast retraining method, apparatus, and storage medium in an xDSL transceiver |
Jul. 6, 2004 |
| 6751304 |
Dedicated data modem system and method |
Jun. 15, 2004 |
| 6704399 |
Quick connect parameter exchange |
Mar. 9, 2004 |
| 6693997 |
Host computer digital signal processing system for communicating over voice-grade telephone channels |
Feb. 17, 2004 |
| 6693998 |
Error correction and compression parameter exchange during modem training phase |
Feb. 17, 2004 |
| 6665382 |
Method and apparatus for wireless communication of digital data |
Dec. 16, 2003 |
| 6625264 |
Method for dialing up a data network terminal as well as switching system with appertaining subscriber terminals |
Sep. 23, 2003 |
| 6606375 |
Data communication apparatus and data communication method |
Aug. 12, 2003 |
| 6539081 |
Method of establishing signaling rate for single-line digital subscriber link providing extended range ADSL service with auxiliary pots channel |
Mar. 25, 2003 |
| 6487243 |
Modems, methods, and computer program products for recovering from errors in a tone reversal sequence between two modems |
Nov. 26, 2002 |
| 6449349 |
Data communication device and data communication method |
Sep. 10, 2002 |
| 6418204 |
Data interface apparatus and method |
Jul. 9, 2002 |
| 6396912 |
Method and system for connecting multiple DSL modems to a telephone line |
May. 28, 2002 |
| 6314170 |
Modem apparatus and data communication method |
Nov. 6, 2001 |
| 6285680 |
Central site call routing apparatus and method |
Sep. 4, 2001 |
| 6268733 |
Field service system for analog current analysis of digitally controlled power devices |
Jul. 31, 2001 |
| 6097794 |
Host computer digital signal processing system for communicating over voice-grade telephone channels |
Aug. 1, 2000 |
| 6041356 |
Method and apparatus for detecting network traffic and initiating a dial-up connection using separate upstream and downstream devices |
Mar. 21, 2000 |
| 5852631 |
System and method for establishing link layer parameters based on physical layer modulation |
Dec. 22, 1998 |
| 5847752 |
Method for call setup and control of videotelephone communication |
Dec. 8, 1998 |
| 5841842 |
Telephone call routing and switching techniques for data communications |
Nov. 24, 1998 |
| 5835574 |
Dual-tone multi-frequency signal transfer protocol |
Nov. 10, 1998 |
| 5809110 |
Technique of controlling telephone calls |
Sep. 15, 1998 |
| 5796808 |
System and method for automatically selecting the mode of communication between a plurality of modems |
Aug. 18, 1998 |
| 5787363 |
System and method for connect message synchronization of modems in a cellular data gateway |
Jul. 28, 1998 |
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