GB2290005B - Communications system - Google Patents

Communications system

Info

Publication number
GB2290005B
GB2290005B GB9410806A GB9410806A GB2290005B GB 2290005 B GB2290005 B GB 2290005B GB 9410806 A GB9410806 A GB 9410806A GB 9410806 A GB9410806 A GB 9410806A GB 2290005 B GB2290005 B GB 2290005B
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
communications system
communications
system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9410806A
Other versions
GB2290005A (en )
GB9410806D0 (en )
Inventor
Robert Ivor Davies
Mayank Kapadia
Rupinder Singh Oberoi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Solutions Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support; Network management devices
    • H04W88/181Transcoding devices; Rate adaptation devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements for establishing connections among stations for the purpose of transferring information via these connections
    • H04Q1/18Electrical details
    • H04Q1/30Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
GB9410806A 1994-05-28 1994-05-28 Communications system Expired - Fee Related GB2290005B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9410806A GB2290005B (en) 1994-05-28 1994-05-28 Communications system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9410806A GB2290005B (en) 1994-05-28 1994-05-28 Communications system

Publications (3)

Publication Number Publication Date
GB9410806D0 GB9410806D0 (en) 1994-07-20
GB2290005A true GB2290005A (en) 1995-12-06
GB2290005B true GB2290005B (en) 1998-09-09

Family

ID=10755912

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9410806A Expired - Fee Related GB2290005B (en) 1994-05-28 1994-05-28 Communications system

Country Status (1)

Country Link
GB (1) GB2290005B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI100932B (en) * 1995-04-12 1998-03-13 Nokia Telecommunications Oy Audio-frequency signal transmission to the radio telephone system
CA2187832A1 (en) * 1995-12-21 1997-06-22 Jari Hagqvist Dtmf for downlink channel in a cellular/mobile/pcs telephone system
US5978676A (en) * 1996-11-15 1999-11-02 Telefonaktiebolaget L/M Ericsson (Publ) Inband signal converter, and associated method, for a digital communication system
EP0847212A1 (en) * 1996-12-06 1998-06-10 Philips Electronics N.V. Telephone device and communications system for reception of coded signals
WO1998027758A3 (en) * 1996-12-19 1999-04-01 Diva Communications Methods and apparatus of providing transparency of dtmf signaling tones across a digital cellular voice channel
US6690681B1 (en) 1997-05-19 2004-02-10 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications network
US6493338B1 (en) 1997-05-19 2002-12-10 Airbiquity Inc. Multichannel in-band signaling for data communications over digital wireless telecommunications networks
US6208959B1 (en) 1997-12-15 2001-03-27 Telefonaktibolaget Lm Ericsson (Publ) Mapping of digital data symbols onto one or more formant frequencies for transmission over a coded voice channel
EP1077001A2 (en) 1998-11-24 2001-02-21 Hughes Electronics Corporation Improved in-call dtmf transport for geostationary mobile satellite communication system
DE69910837D1 (en) 1999-02-04 2003-10-02 Nokia Corp Eliminating toner detection
US7215965B2 (en) 2001-11-01 2007-05-08 Airbiquity Inc. Facility and method for wireless transmission of location data in a voice channel of a digital wireless telecommunications network
US7508810B2 (en) 2005-01-31 2009-03-24 Airbiquity Inc. Voice channel control of wireless packet data communications
US7924934B2 (en) 2006-04-07 2011-04-12 Airbiquity, Inc. Time diversity voice channel data communications
US8594138B2 (en) 2008-09-15 2013-11-26 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US7983310B2 (en) 2008-09-15 2011-07-19 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8073440B2 (en) 2009-04-27 2011-12-06 Airbiquity, Inc. Automatic gain control in a personal navigation device
US8418039B2 (en) 2009-08-03 2013-04-09 Airbiquity Inc. Efficient error correction scheme for data transmission in a wireless in-band signaling system
US8249865B2 (en) 2009-11-23 2012-08-21 Airbiquity Inc. Adaptive data transmission for a digital in-band modem operating over a voice channel
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332825A2 (en) * 1988-03-18 1989-09-20 Motorola, Inc. Cellular data telephone and method for communicating data
GB2262683A (en) * 1991-12-20 1993-06-23 British Aerospace Space And Co Dialled digit handler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332825A2 (en) * 1988-03-18 1989-09-20 Motorola, Inc. Cellular data telephone and method for communicating data
GB2262683A (en) * 1991-12-20 1993-06-23 British Aerospace Space And Co Dialled digit handler

Also Published As

Publication number Publication date Type
GB2290005A (en) 1995-12-06 application
GB9410806D0 (en) 1994-07-20 grant

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010528