|
10G-EPON
The 10 Gbit/s Ethernet Passive Optical Network standard, better known as 10G-EPON allows computer network connections over telecommunication provider infrastructure. The standard supports two configurations: ''symmetric'', operating at 10 Gbit/s data rate in both directions, and ''asymmetric'', operating at 10 Gbit/s in the downstream (provider to customer) direction and 1 Gbit/s in the upstream direction. It was ratified as IEEE 802.3av standard in 2009. EPON is a type of passive optical network, with Time-division multiple access which is a point-to-multipoint network using passive fiber-optic splitters rather than powered devices for fan-out from hub to customers. Standardization The Ethernet in the first mile task force of the Institute of Electrical and Electronics Engineers (IEEE) 802.3 standards committee published standards that included a passive optical network (PON) variant in 2004. In March 2006, the IEEE 802.3 held a call for interest for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passive Optical Network
A passive optical network (PON) is a fiber-optic telecommunications network that uses only ''unpowered'' devices to carry signals, as opposed to electronic equipment. In practice, PONs are typically used for the '' last mile'' between Internet service providers (ISP) and their customers. In this use, a PON has a point-to-multipoint topology in which an ISP uses a single device to serve many end-user sites using a system such as 10G-PON or GPON. In this one-to-many topology, a single fiber serving many sites branches into multiple fibers through a passive splitter, and those fibers can each serve multiple sites through further splitters. The light from the ISP is divided through the splitters to reach all the customer sites, and light from the customer sites is combined into the single fiber. Many fiber ISPs prefer this system. Components and characteristics A passive optical network consists of an optical line terminal (OLT) at the service provider's central office (hub), p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethernet In The First Mile
Ethernet in the first mile (EFM) refers to using one of the Ethernet family of computer network technologies between a telecommunications company and a customer's premises. From the customer's point of view, it is their first mile, although from the access network's point of view it is known as the last mile. A working group of the Institute of Electrical and Electronics Engineers (IEEE) produced the standards known as IEEE 802.3ah-2004, which were later included in the overall standard IEEE 802.3-2008. EFM is often used in active optical network deployments. Although it is often used for businesses, it can also be known as Ethernet to the home (ETTH). One family of standards known as Ethernet passive optical network (EPON) uses a passive optical network. History With wide, metro, and local area networks using various forms of Ethernet, the goal was to eliminate non-native transport such as Ethernet over Asynchronous Transfer Mode (ATM) from access networks. One early effor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunications Company
A telecommunications company is a kind of electronic communications service provider, more precisely a telecommunications service provider (TSP), that provides telecommunications services such as telephony and data communications access. Many traditional solely telephone companies now function as internet service providers (ISPs), and the distinction between a telephone company and ISP has tended to disappear completely over time, as the current trend for supplier convergence in the industry develops. Additionally, with advances in technology development, other traditional separate industries such as cable television, Voice-over IP (VoIP), and satellite providers offer similar competing features as the telephone companies to both residential and businesses leading to further evolution of corporate identity have taken shape. Due to the nature of capital expenditure involved in the past, most telecommunications companies were government owned agencies or privately-owned monop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ample Communications
In mathematics, a distinctive feature of algebraic geometry is that some line bundles on a projective variety can be considered "positive", while others are "negative" (or a mixture of the two). The most important notion of positivity is that of an ample line bundle, although there are several related classes of line bundles. Roughly speaking, positivity properties of a line bundle are related to having many global sections. Understanding the ample line bundles on a given variety X amounts to understanding the different ways of mapping X into projective spaces. In view of the correspondence between line bundles and divisors (built from codimension-1 subvarieties), there is an equivalent notion of an ample divisor. In more detail, a line bundle is called basepoint-free if it has enough sections to give a morphism to projective space. A line bundle is semi-ample if some positive power of it is basepoint-free; semi-ampleness is a kind of "nonnegativity". More strongly, a line bundle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delta Electronics
Delta Electronics, Inc. (also known as DELTA or Delta Electronics) is a Taiwanese electronics manufacturing company. Its headquarters are in Neihu District, Neihu, Taipei. It is known for its direct current, DC industrial and computer fans, data center rectifier, rectifiers and switching power supplies. The company operates approximately 200 facilities worldwide, including manufacturing, sales, and R&D centers. Overview Delta is a major supplier of power components to Apple Inc., Apple and Tesla, Inc., Tesla. Delta is a member of the Taiwan Climate Partnership. The company is committed to reaching net-zero carbon emissions. Environmental, Social and Governance Delta has long history of being a leader in the environmental, social, and governance (ESG) space. Among companies based in Taiwan, it was the first to issue a Corporate Social Responsibility (ESG) report in 2005, and publishes a new report annually. It has been listed on the Dow Jones Sustainability World Index, Dow Jon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corning Incorporated
Corning Incorporated is an American multinational technology company specializing in glass, ceramics, and related materials and technologies including advanced optics, primarily for industrial and scientific applications. The company was named Corning Glass Works until 1989. Corning divested its consumer product lines (including CorningWare and Visions Pyroceram-based cookware, Corelle Vitrelle tableware, and Pyrex glass bakeware) in 1998 by selling the Corning Consumer Products Company subsidiary (later Corelle Brands) to Borden. , Corning had five major business sectors: display technologies, environmental technologies, life sciences, optical communications, and specialty materials. Corning is involved in two joint ventures: Dow Corning and Pittsburgh Corning. The company completed the corporate spin-offs of Quest Diagnostics and Covance (now Fortrea) in January 1997. Corning is one of the main suppliers to Apple Inc. Since working with Steve Jobs in 2007, to develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conexant Systems
Conexant Systems, Inc. was an American-based software developer and fabless manufacturing, fabless semiconductor company that developed technology for voice and audio processing, imaging and modems. The company began as a division of Rockwell International, before being spun off as a public company. Conexant itself then spun off several business units, creating independent public companies which included Skyworks Solutions and Mindspeed Technologies. The company was acquired by computing interface technology company Synaptics , Synaptics, Inc. in July 2017. History In 1996, Rockwell International Corporation incorporated its semiconductor division as Rockwell Semiconductor Systems, Inc. On January 4, 1999, Rockwell spun off Conexant Systems, Inc. as a public company. It was listed on the NASDAQ under symbol CNXT on January 4, 1999. At that time, Conexant became the world's largest, standalone communications-integrated circuit, IC company. Dwight W. Decker was its first ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cisco Systems
Cisco Systems, Inc. (using the trademark Cisco) is an American multinational corporation, multinational digital communications technology conglomerate (company), conglomerate corporation headquartered in San Jose, California. Cisco develops, manufactures, and sells networking hardware, software, telecommunications equipment and other high-technology services and products. Cisco specializes in specific tech markets, such as the Internet of things (IoT), internet domain, domain security, videoconferencing, and energy management with List of Cisco products, products including Webex, OpenDNS, XMPP, Jabber, Duo Security, Silicon One, and Cisco Jasper, Jasper. Cisco Systems was founded in December 1984 by Leonard Bosack and Sandy Lerner, two Stanford University computer scientists who had been instrumental in connecting computers at Stanford. They pioneered the concept of a local area network (LAN) being used to connect distant computers over a multiprotocol router (computing), route ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chunghwa Telecom
Chunghwa Telecom (), officially Chunghwa Telecom Co., Ltd., is the largest integrated Telecommunications company, telecommunications service provider in Taiwan, providing Public switched telephone network, PSTN, mobile phone, and broadband services. History Chunghwa Telecom was founded as a company on June 15, 1996 as part of the government's privatization efforts. Prior to this, it was operated as a business unit of the for over 100 years. The company's common shares have been listed on the Taiwan Stock Exchange under the number "2412" since October 2000, and its ADSs have been listed on the New York Stock Exchange under the symbol "CHT" since July 2003. In August 2005, Chunghwa Telecom became a privatized company, as the Taiwan government's ownership was reduced to less than 50%. The Directorate General of Telecommunications once exercised a monopoly on the telecommunications market in Taiwan. To make the telecommunications industry more competitive and improve service ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China Telecom
China Telecom Corporation Limited (CT) is a Chinese telecommunications company. It is one of the publicly traded red chip companies of the state-owned China Telecommunications Corporation. The company's H shares have been traded on the Stock Exchange of Hong Kong since 15 November 2002. It is a constituent of the Hang Seng China Enterprises Index, the index for the H shares of state-controlled listed companies. The company was also listed on the New York Stock Exchange until January 2021. China Telecom is the second-largest wireless carrier in China, with 362.49 million subscribers History China Telecom Corp., Ltd. was incorporated on 10 September 2002 as a limited company in order to float some of the assets of the group on the stock exchange, specifically the wireline telecommunications businesses in Shanghai, Guangdong, Jiangsu, and Zhejiang, as well as other assets from the parent company. In 2003, China Telecom acquired businesses in Anhui, Fujian, Jiangxi, Guangxi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
