|
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] |
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] |
Voice Over WLAN
Voice over Wireless LAN (VoWLAN), also Voice over WiFi (VoWiFi), is the use of a wireless broadband network according to the IEEE 802.11 standards for the purpose of vocal conversation. In essence, it is Voice over IP (VoIP) over a Wi-Fi network. In most cases, the Wi-Fi network and voice components supporting the voice system are privately owned. VoWLAN can be conducted over any Internet accessible device, including a laptop, PDA or VoWLAN units which look and function like DECT and cellphones. Just like for IP-DECT, the VoWLAN's main advantages to consumers are cheaper local and international calls, free calls to other VoWLAN units and a simplified integrated billing of both phone and Internet service providers. Although VoWLAN and 3G have certain feature similarities, VoWLAN is different in the sense that it uses a wireless internet network (typically 802.11) rather than a cellular network. Both VoWLAN and 3G are used in different ways, although with a femtocell the two c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascom (company)
Ascom Holding AG is a global solutions provider focused on Healthcare ICT and mobile workflow solutions for various industries, retail and security markets worldwide. Ascom provides mission-critical, near-real time communication and collaboration solutions and services for mobile, ad hoc, and time-sensitive environments. The company has subsidiaries in 18 countries and a workforce of some 1300 employees worldwide. Ascom registered shares (symbol ASCN) are listed on the SIX Swiss Exchange in Zurich. Subsidiary is Ascom (Schweiz) AG with former company names Hasler AG, Hasler Ascom AG and Ascom AG. Ascom solutions and services are based on VoWiFi, IP-DECT, Nurse Call, paging technologies, smartphones, apps and software suites for healthcare and enterprise segments. Founded in the 1950s as TATECO (an abbreviation of Tore Andersson, Tele Control) based in Gothenburg, Sweden, Ascom Wireless Solutions is part of Ascom Holding, listed on the Swiss Stock Exchange. The former division A ... [...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] |
Voice Over WLAN
Voice over Wireless LAN (VoWLAN), also Voice over WiFi (VoWiFi), is the use of a wireless broadband network according to the IEEE 802.11 standards for the purpose of vocal conversation. In essence, it is Voice over IP (VoIP) over a Wi-Fi network. In most cases, the Wi-Fi network and voice components supporting the voice system are privately owned. VoWLAN can be conducted over any Internet accessible device, including a laptop, PDA or VoWLAN units which look and function like DECT and cellphones. Just like for IP-DECT, the VoWLAN's main advantages to consumers are cheaper local and international calls, free calls to other VoWLAN units and a simplified integrated billing of both phone and Internet service providers. Although VoWLAN and 3G have certain feature similarities, VoWLAN is different in the sense that it uses a wireless internet network (typically 802.11) rather than a cellular network. Both VoWLAN and 3G are used in different ways, although with a femtocell the two c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Interface
The air interface, or access mode, is the communication link between the two stations in mobile or wireless communication. The air interface involves both the physical and data link layers (layer 1 and 2) of the OSI model for a connection. Physical Layer The physical connection of an air interface is generally radio-based. This is usually a point to point link between an active base station and a mobile station. Technologies like Opportunity-Driven Multiple Access (ODMA) may have flexibility regarding which devices serve in which roles. Some types of wireless connections possess the ability to broadcast or multicast. Multiple links can be created in limited spectrum through FDMA, TDMA, or SDMA. Some advanced forms of transmission multiplexing combine frequency- and time-division approaches like OFDM or CDMA. In cellular telephone communications, the air interface is the radio-frequency portion of the circuit between the cellular phone set or wireless modem (usually portable or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VoIP
Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the Internet, rather than via the public switched telephone network (PSTN), also known as plain old telephone service (POTS). Overview The steps and principles involved in originating VoIP telephone calls are similar to traditional digital telephony and involve signaling, channel setup, digitization of the analog voice signals, and encoding. Instead of being transmitted over a circuit-switched network, the digital information is packetized and transmission occurs as IP packets over a packet-switched network. They transport media streams using special media delivery protocol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless LAN
A wireless LAN (WLAN) is a wireless computer network that links two or more devices using wireless communication to form a local area network (LAN) within a limited area such as a home, school, computer laboratory, campus, or office building. This gives users the ability to move around within the area and remain connected to the network. Through a gateway, a WLAN can also provide a connection to the wider Internet. Wireless LANs based on the IEEE 802.11 standards are the most widely used computer networks in the world. These are commonly called Wi-Fi, which is a trademark belonging to the Wi-Fi Alliance. They are used for home and small office networks that link together laptop computers, printers, smartphones, Web TVs and gaming devices with a wireless router, which links them to the internet. Hotspots provided by routers at restaurants, coffee shops, hotels, libraries, and airports allow consumers to access the internet with portable wireless devices. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aastra
Aastra Technologies Limited, formerly headquartered in Concord, Ontario, Canada, made products and systems for accessing communication networks, including the Internet. Its products included residential and business telephone terminals, screen telephones, Enterprise private branch exchanges (PBX), network access terminals and high-quality digital video encoders, decoders and gateways. Residential telephone equipment was sold in the United States as Bell equipment by Sonecor brand, which represented Southern New England Telecommunications. Mitel Networks Corporation announced on November 11, 2013, that it would acquire Aastra Technologies Ltd. in a stock and cash deal valued at about $400 million. History In 1983, Francis Shen and Hugh Scholaert bought an engineering consulting company, founding Aastra in Toronto in 1983. The company provided services to the defense industry. In 1993, the company started to specialise in telecommunications. Aastra went public in Canada in 1996 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gigaset Communications
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] |
Mitel
Mitel Networks Corporation is a Canadian telecommunications company. The company previously produced TDM PBX systems and applications, but after a change in ownership in 2001, now focuses almost entirely on Voice-over-IP (VoIP) products. Mitel is headquartered in Ottawa, Ontario, Canada, with offices, partners and resellers worldwide. In April 2018, the company announced it would be bought by an investor group led by Searchlight Capital Partners. Corporate history Founding Michael Cowpland and Terry Matthews founded Mitel in 1973 (officially on June 8, 1973). Conventionally, its name is regarded as a combination of the founders’ first names and their first product – "MIke and TErry Lawnmowers". Michael Cowpland is quoted as stating that it stands for "MIke and Terry ELectronics", whereas Terry Matthews confirmed the lawnmower acronym during an interview on BBC Radio 4's ''The Bottom Line'' in May 2011. The pair formed the corporation with the blessing of their employer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panasonic
formerly between 1935 and 2008 and the first incarnation of between 2008 and 2022, is a major Japanese multinational conglomerate corporation, headquartered in Kadoma, Osaka. It was founded by Kōnosuke Matsushita in 1918 as a lightbulb socket manufacturer. In addition to consumer electronics, of which it was the world's largest maker in the late 20th century, Panasonic offers a wide range of products and services, including rechargeable batteries, automotive and avionic systems, industrial systems, as well as home renovation and construction. Panasonic has a primary listing on the Tokyo Stock Exchange and is a constituent of the Nikkei 225 and TOPIX 100 indices. It has a secondary listing on the Nagoya Stock Exchange. Corporate name From 1935 to October 1, 2008, the company's corporate name was "Matsushita Electric Industrial Co." (MEI). On January 10, 2008, the company announced that it would change its name to "Panasonic Corporation", in effect on October 1, 2008, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Panasonic")