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DECT
Digital enhanced cordless telecommunications (Digital European cordless telecommunications), usually known by the acronym DECT, is a standard primarily used for creating cordless telephone systems. It originated in Europe, where it is the common standard, replacing earlier cordless phone standards, such as 900 MHz CT1 and CT2. Beyond Europe, it has been adopted by Australia and most countries in Asia and South America. North American adoption was delayed by United States radio-frequency regulations. This forced development of a variation of DECT called DECT 6.0, using a slightly different frequency range, which makes these units incompatible with systems intended for use in other areas, even from the same manufacturer. DECT has almost completely replaced other standards in most countries where it is used, with the exception of North America. DECT was originally intended for fast roaming between networked base stations, and the first DECT product was Net3 wireless LA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CAT-iq
Cordless Advanced Technology—internet and quality (CAT-iq) is a technology initiative from the Digital Enhanced Cordless Telecommunications (DECT) Forum, based on ETSI TS 102 527 New Generation DECT (NG-DECT) European standard series. NG-DECT contains backward compatible extensions to basic DECT GAP (Generic access profile) functionality which allow bases and handsets from different vendors to work together with full feature richness expected from SIP terminals and VoIP gateways. CAT-iq defines several profiles for high quality wideband voice services with multiple lines, as well as low bit-rate data applications. Profiles The CAT-iq profiles are split between voice and data service, with the following mandatory features: ; CAT-iq 1.0 "HD Voice" (ETSI TS 102 527-1): Narrow-band (32 kbit/s G.726 ADPCM) and wideband (64 kbit/s G.722 sub-band ADPCM) audio, calling party line and name identification ( CLIP, CNAP) ; CAT-iq 2.0 "Multi Line" (ETSI TS 102 527-3): Adds multiple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ULE Alliance
DECT Ultra Low Energy (DECT ULE) is a wireless communication standard used to design wireless sensor and actuator networks for smart home applications. DECT ULE originated from the DECT and NG-DECT (Cat-iq) technology. DECT ULE devices are used in home automation, home security, and climate control. In May 2013 ETSI released the specification of the ULE standard (Technical Specification TS 102 939-01). The ULE technology is promoted by the ULE Alliance, a non-profit organization, located in Bern, Switzerland. Overview The basic ULE wireless network uses a “star network topology”; i.e. there is one main device, called “base”, which controls the network; the “base” is wirelessly connected to “nodes”, which usually are devices with dedicated functions, such as sensors, remote controls, actuators, smart meters, etc. Some examples of node devices – door locks, smoke detectors, motion detectors, remote controls, gas and electricity meters, baby monitors, elderly ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DECT Ultra Low Energy
DECT Ultra Low Energy (DECT ULE) is a wireless communication standard used to design wireless sensor and actuator networks for smart home applications. DECT ULE originated from the DECT and NG-DECT (Cat-iq) technology. DECT ULE devices are used in home automation, home security, and climate control. In May 2013 ETSI released the specification of the ULE standard (Technical Specification TS 102 939-01). The ULE technology is promoted by the ULE Alliance, a non-profit organization, located in Bern, Switzerland. Overview The basic ULE wireless network uses a “star network topology”; i.e. there is one main device, called “base”, which controls the network; the “base” is wirelessly connected to “nodes”, which usually are devices with dedicated functions, such as sensors, remote controls, actuators, smart meters, etc. Some examples of node devices – door locks, smoke detectors, motion detectors, remote controls, gas and electricity meters, baby monitors, elderly car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Net3
Net3 was a Wi-Fi-like system developed, manufactured and commercialised by Olivetti in the early 1990s. It could wirelessly connect PCs to an Ethernet fixed LAN at a speed of up to 512kbit/s, over a very wide area. It was a micro-cellular system, in which each base station had an effective range of about 100m indoors, 300m outdoors, and the system supported seamless handover between base stations. The system was based on the DECT standard, published in 1992. A prototype system was first demonstrated at the Telecom '91 show in Geneva in October 1991, and is believed to be the first public demonstration of the DECT transmission system. The product was launched in June 1993, and was the first product based on the DECT standard to reach the market, narrowly beating Siemens' highly successful Gigaset cordless telephone. It is also believed to be the first wireless LAN to be sold on the European market. In its first version, the adapter cards consisted of half-size PC cards connecte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IP-DECT
IP-DECT is a technology used for on-site wireless communications. It uses the DECT air interface for reliable wireless voice and data communication between handsets and base stations and the well established VoIP technology for the corded voice communication between base stations and server functions. The advantage is the circuit switched approach and therefore better specified quality of service for vocal communication than with Wireless LAN. A DECT phone must remain in proximity to its own base (or repeaters thereof), and WLAN devices have a better range given sufficient access points, however voice over WLAN handsets impose significant design and maintenance complexity for large networks to ensure roaming facilities and high quality-of-service. There are some of the traditional telephone equipment manufacturers and smaller enterprises that offer IP-DECT systems, both for residential (single-cell base station/access points), as well as for enterprise usage (multi-cell with multi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cordless Telephone
A cordless telephone or portable telephone has a portable telephone handset that connects by radio to a base station connected to the public telephone network. The operational range is limited, usually to the same building or within some short distance from the base station. A cordless telephone differs functionally from a mobile telephone in its limited range and by depending the base station on the subscriber premises. Current cordless telephone standards, such as PHS and DECT, have blurred the once clear-cut line between cordless and mobile telephones by implementing cell handoff (handover); various advanced features, such as data-transfer; and even, on a limited scale, international roaming. In specialized models, a commercial mobile network operator may maintain base stations and users subscribe to the service. Unlike a corded telephone, a cordless telephone needs mains electricity (to power the base station). The cordless handset contains a rechargeable battery, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gigaset
Gigaset AG, formerly known as Siemens Home and Office Communication Devices, is a German multinational corporation based in Bocholt, Germany. The company is most active in the area of communications technology. Gigaset manufactures DECT telephones. In 2017, it had 930 employees, revenue of 293 million Euro and sales activities in approximately 70 countries. Gigaset is owned by the Goldin Group (>70%) and hence controlled by Hong Kong businessman and entrepreneur Pan Sutong. Gigaset AG is listed on the Prime Standard of Deutsche Börse and its shares are traded on the Frankfurt Stock Exchange (ISIN: DE0005156004). History Gigaset Communications was established on 1 October 2008, when , a private equity firm, acquired 80.2% equity interest in Siemens Home and Office Communication Devices GmbH & Co. KG (SHC) from Siemens AG for 45 million euros. Products and services Gigaset creates numerous products for home and small office use: *Cordless phones: Specializing in DECT and C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generic Access Profile
The Generic Access Profile (GAP) (ETSI standard EN 300 444) describes a set of mandatory requirements to allow any conforming DECT Fixed Part (base) to interoperate with any conforming DECT Portable Part (handset) to provide basic telephony services when attached to a 3.1 kHz telephone network (as defined by EN 300 176-2). The objective of GAP is to ensure interoperation at the air interface (i.e., the radio connection) and at the level of procedures to establish, maintain and release telephone calls (Call Control). GAP also mandates procedures for registering Portable Parts to a Fixed Part (Mobility Management). A GAP-compliant handset from one manufacturer should work, at the basic level of making calls, with a GAP-compliant base from another manufacturer, although it may be unable to access advanced features of the base station such as phone book synchronization or remote operation of an answering machine. Most consumer-level DECT phones and base stations support the GAP pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unlicensed Personal Communications Services
Unlicensed Personal Communications Services or UPCS band is the 1920–1930 MHz frequency band allocated by the United States Federal Communications Commission (FCC) for short range Personal Communications Services (PCS) applications in the United States, such as the Digital Enhanced Cordless Telecommunications (DECT) wireless protocol. History Prior to an FCC rules change in April 2005, the band also included the frequencies 1910-1920 MHz and 2390–2400 MHz. These were used for a variety of short range communications, including point-to-point microwave links. Allocation These allocation rules are described in Title 47Part 15of the Code of Federal Regulations. ''Licensed'' PCS, although not necessarily distinguished as such from UPCS, is used for digital mobile phone services. DECT devices designed to operate in this band in the US use the marketing term DECT 6.0. See also *Amateur radio (Licence Required) * Citizens band radio *Family Radio Service *General Mobil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polycom
Poly, formerly Polycom, a part of HP Inc., is an American multinational corporation that develops video, voice and content collaboration and communication technology. Polycom was co-founded in 1990 by Brian L Hinman and Jeffrey Rodman. In 2018 Polycom was acquired by Plantronics and in 2019 the name of the combined entity was changed to Poly. In 2022, it was sold onwards to HP. History Polycom was co-founded in 1990 by Brian L Hinman and Jeffrey Rodman, who were colleagues at PictureTel Corp. The startup was based in San Francisco, California but soon moved to San Jose, California, with Hinman using $400,000 of his own money and $100,000 from friends as seed money. Oak Investment Partners and Accel Partners then contributed an additional $3 million in venture capital. Polycom's stated goal was to develop solutions for all the major ways people communicate, specifically including audio, content such as documents, and video. Its first products to market were audio conferen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baby Monitor
A baby monitor, also known as a baby alarm, is a radio system used to remotely listen to sounds made by an infant. An audio monitor consists of a transmitter unit, equipped with a microphone, placed near to the child. It transmits the sounds by radio waves to a receiver unit with a speaker carried by, or near to, the person caring for the infant. Some baby monitors provide two-way communication which allows the parent to speak back to the baby (parent talk-back). Some allow music to be played to the child. A monitor with a video camera and receiver is often called a ''baby cam''. One of the primary uses of baby monitors is to allow attendants to hear when an infant wakes, while out of immediate hearing distance of the infant. Although commonly used, there is no evidence that these monitors prevent SIDS, and many doctors believe they provide a false sense of security. Infants and young children can often be heard over a baby monitor in crib talk, in which they talk to themselves. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Business Telephone System
A business telephone system is a multiline telephone system typically used in business environments, encompassing systems ranging in technology from the key telephone system (KTS) to the private branch exchange (PBX). A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines used are directly controllable in key telephone systems from multiple telephone stations, and that such a system often provides additional features related to call handling. Business telephone systems are often broadly classified into key telephone systems, and private branch exchanges, but many hybrid systems exist. A key telephone system was originally distinguished from a private branch exchange in that it did not require an operator or attendant at the switchboard to establish connections between the central office trunks and stations, or between stations. Technologically, private branch exchanges share lineage with centra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
