Before telecommunication networks began to support data related services, the bearer channel was dedicated solely to voice information. When support for data related services was originally released, the bearer channel was switched between being dedicated to voice information or dedicated to primary data information, depending on the subscriber's needs at any given time. Eventually, support for simultaneous voice and data transmission was added to modems and mobile devices, to enable subscribers to use voice and data services at the same time.
simultaneous, voice, data, telecommunications, system, that, supports, simultaneous, voice, data, that, transceive, both, voice, primary, data, concurrently, over, pstn, modem, contents, background, types, also, references, notesbackground, editbefore, telecom. In telecommunications a system that supports simultaneous voice and data SVD is one that can transceive both voice and primary data concurrently over one PSTN modem 1 Contents 1 Background 2 Types 3 See also 4 References and notesBackground editBefore telecommunication networks began to support data related services the bearer channel was dedicated solely to voice information When support for data related services was originally released the bearer channel was switched between being dedicated to voice information or dedicated to primary data information depending on the subscriber s needs at any given time Eventually support for simultaneous voice and data transmission was added to modems and mobile devices to enable subscribers to use voice and data services at the same time Types editSee also List of ITU T V series recommendations Simultaneous transmission of data and other signals Digital Simultaneous Voice and Data or DSVD defined by the ITU T V 70 standard Analog Simultaneous Voice and Data or ASVD defined by the ITU T V 61 standard Data over signalling or DoS wherein data is multiplexed onto the signalling channel and voice is dedicated to the bearer channel Combined voice and data wherein the data is multiplexed with voice onto the bearer channel See also editMultiplexing Voice activity detectionReferences and notes edit Feiertag et al 1997 04 29 US Patent 5 625 677 Retrieved 2008 08 21 nbsp This article related to telephony is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Simultaneous voice and data amp oldid 1160677855, wikipedia, wiki, book, books, library,
