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Class Information
Number: 379/93.26
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)
Description: Subject matter wherein the pulse or data signal is specifically described as converted into one or more tones lying within the audible frequency spectrum.

Sub-classes under this class:

Class Number Class Name Patents
379/93.27 Alphanumeric 95
379/93.37 Having acoustic link 83
379/93.28 Modulated audio tone 228

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8712757 Methods and apparatus for monitoring communication through identification of priority-ranked keywords Apr. 29, 2014
8661477 System for distributing and selecting audio and video information and method implemented by said system Feb. 25, 2014
8630301 Citizens' emergency network system and method Jan. 14, 2014
8615280 Error correction for DTMF corruption on uplink Dec. 24, 2013
8582732 Automatic digit map generation for access gateway during call setup Nov. 12, 2013
8423102 Error correction for DTMF corruption on uplink Apr. 16, 2013
8233951 Error correction for DTMF corruption on uplink Jul. 31, 2012
8214549 Methods for personal emergency intervention Jul. 3, 2012
8209195 System for personal emergency intervention Jun. 26, 2012
8098801 Systems and methods for information exchange and synchronization using DTMF over telephone communication channels Jan. 17, 2012
7912184 Voicemail test system Mar. 22, 2011
7567548 Method to reduce the distortion in a voice transmission over data networks Jul. 28, 2009
7561873 Mobile handset as TTY device Jul. 14, 2009
7529363 Tone detector and method therefor May. 5, 2009
7486665 Transport of DTMF tones over VOATM/VOIP networks Feb. 3, 2009
7454005 Method and system for creating automated voice response menus for telecommunications services Nov. 18, 2008
7289491 Internet telephony arrangement and method Oct. 30, 2007
7280643 Audio status communication from an embedded device Oct. 9, 2007
7274779 Telephone to telephone data passing system Sep. 25, 2007
7245708 Acoustic coupling product label Jul. 17, 2007
7092379 Internet telephony arrangement and method Aug. 15, 2006
7088804 Systems and methods for information exchange and synchronization using DTMF over telephone communication channels Aug. 8, 2006
7076460 Interactive remote auction bidding system Jul. 11, 2006
7069243 Interactive remote auction bidding system Jun. 27, 2006
7054421 Enabling legacy interactive voice response units to accept multiple forms of input May. 30, 2006
7013393 Universal intelligent card for secure access to system functions Mar. 14, 2006
RE38741 Audio communication system Jun. 7, 2005
6891944 System and method of autodialing for long-distance access May. 10, 2005
6771751 Systems and methods for information exchange and synchronization using DTMF over telephone communication channels Aug. 3, 2004
6751303 Data communication over telephone voice channel using DTMF interface Jun. 15, 2004
6741682 Method, computer system and program for processing bets and games of chance May. 25, 2004
6697466 Audio status communication from an embedded device Feb. 24, 2004
6683944 Voice transmitter Jan. 27, 2004
6668043 Systems and methods for transmitting and receiving text data via a communication device Dec. 23, 2003
6665383 Remote control module for computer and method thereof Dec. 16, 2003
6643358 Telephone answering apparatus and method for confirming an acoustic command signal Nov. 4, 2003
6560320 Adaptable subscriber unit for interactive telephone applications May. 6, 2003
6430284 System and method for redirecting control of in-band signaling Aug. 6, 2002
6415269 Interactive remote auction bidding system Jul. 2, 2002
6411688 Method for transferring dial tone in real time in computer communication system Jun. 25, 2002
6396921 Method and system for encoding and decoding typographic characters May. 28, 2002
RE37569 High-speed modem synchronized to a remote codec Mar. 5, 2002
6259788 Technique for balancing loads in a communication network Jul. 10, 2001
6259691 System and method for efficiently transporting dual-tone multi-frequency/multiple frequency (DTMF/MF) tones in a telephone connection on a network-based telephone system Jul. 10, 2001
6243442 Telephone exchange apparatus Jun. 5, 2001
6236724 Methods and apparatus for encoding and decoding data transmitted over telephone lines May. 22, 2001
6233323 DTMF download technique for digital telephone devices May. 15, 2001
6215515 Videocommunicating device with an on-screen telephone keypad user-interface method and arrangement Apr. 10, 2001
6160873 System and method for remotely initializing, operating and monitoring a general-purpose computer Dec. 12, 2000
6104789 Method and system for transmitting text messages from a caller to a subscriber at an unknown address Aug. 15, 2000

1 2 3 4

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