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Zayo
Zayo Group Holdings, Inc., or Zayo Group, is a privately held company headquartered in Boulder, Colorado, U.S. with European headquarters in London, England. The company provides communications infrastructure services, including fiber and bandwidth connectivity, colocation and cloud infrastructure. Zayo's primary customer segments include wireless carriers, national carriers, ISPs, enterprises and government agencies. Zayo Group was built largely through acquisitions; it took over thirty companies from 2007 to 2014, including AboveNet and 360networks. An initial public offering of stock raised $600 million in 2014. In May 2019, Zayo Group agreed to be acquired by global investment firms EQT Partners and Digital Colony Partners in a deal valued at $14.3 billion. Founding and acquisition history Zayo was founded in 2007 by Dan Caruso and John Scarano as a Delaware corporation. In 2007, Zayo acquired Memphis Networx, VoicePipe, Onvoy Inc, PPL Telcom and Indiana Fiber Works. In 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dan Caruso
Dan Caruso (born July 1, 1963) is an American entrepreneur, investor, co-founder, and former chairman and CEO of Zayo Group Holdings, Inc., a bandwidth infrastructure services company headquartered in Boulder, Colorado. Career Caruso began his career in 1986 as a manager at Ameritech, a telecommunications company. In 1992, Caruso joined MFS Communications, a provider of business grade telecommunication products, and served on its executive team until it was sold to WorldCom in 1996. At WorldCom, Caruso worked as senior vice president for a short time, but left in 1997 to co-found Level 3 Communications, Inc, a telecommunications and internet service provider. In 2003, Caruso left Level 3 Communications. From 2004 to 2006, Caruso was president and CEO of ICG Communications, a publicly traded telecom company with $100 million in debt. Caruso led the private buyout of ICG Communications in 2004. Over a two-year span, Caruso's team sold off the company's non-core assets for appro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Lightwave
Electric Lightwave, was originally formed in 1988, by John Warta, John Rivenburgh, Earl Kamsky and Richard Furnival. The company was initially formed to compete with US West and GTE in the Pacific Northwest. Portland General Electric was an initial investor, then Citizens Utilities became the largest investor in 1990. ELI became the first company to compete locally in Oregon, Washington, Idaho, Utah, and one of the first in California and Arizona. Integra acquired ELI, and eventually renamed Integra as Electric Lightwave. Electric Lightwave, formerly known as Integra was a privately owned provider of fiber-based, carrier-grade networking, communications and technology solutions, headquartered in Vancouver, Washington, United States. In 2016, the company split into two divisions, Electric Lightwave and Integra, and changed its parent company name to Electric Lightwave. In early 2017, Electric Lightwave was acquired by Zayo Group Holdings (NYSE: ZAYO) for $1.4 billion. Founded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tier 1 Network
A Tier 1 network is an Internet Protocol (IP) network that can reach every other network on the Internet solely via settlement-free interconnection (also known as settlement-free peering). Tier 1 networks can exchange traffic with other Tier 1 networks without paying any fees for the exchange of traffic in either direction. In contrast, some Tier 2 networks and all Tier 3 networks must pay to transmit traffic on other networks. There is no authority that defines tiers of networks participating in the Internet. The most common and well-accepted definition of a Tier 1 network is a network that can reach every other network on the Internet without purchasing IP transit or paying for peering. By this definition, a Tier 1 network must be a transit-free network (purchases no transit) that peers for free with every other Tier 1 network and can reach all major networks on the Internet. Not all transit-free networks are Tier 1 networks, as it is possible to become transit-free by paying for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
360networks
360networks, Inc. was a Canadian-based wholesale telecommunications carrier. The company developed many long-haul fiber optic communications network routes throughout North America, many along railroad rights of way, consisting of both dark fiber and lit fiber. These long-haul routes included Chicago to New Orleans, Chicago to Denver, Chicago to Detroit, Chicago to New York, Seattle to Los Angeles, and Denver to San Francisco. In 2011, the company was acquired by Zayo Group. History The company was founded as Pacific Fiber Link, L.L.C. on February 5, 1998 as a subsidiary of Ledcor Industries of Canada, a member of the Ledcor Group of Companies, owned by the Lede family. It commenced business operations on May 31, 1998. As the fiber optic telecommunications industry boomed, one of the greatest impediments to rapid growth for the telecoms was the acquisition of the rights of way within which to lay the fiber optic cables. The Ledes came up with a solution to this problem and negotia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spread Networks
Spread Networks is a company founded by Dan Spivey and backed by James L. Barksdale (former CEO of Netscape Communications Corporation) that claims to offer Internet connectivity between Chicago and New York City at ultra-low latency (i.e. speeds that are very close to the speed of light), high bandwidth, and high reliability, using dark fiber. Its customers are primarily firms engaged in high-frequency trading, where small reductions in latency are important to the extent that they help one close trades before one's competitors. History The first cable line, running from Chicago (home to the Chicago Mercantile Exchange, where futures and options are traded) to Carteret, New Jersey (home to the Nasdaq data center), laid at a cost of US$300 million, was unveiled in June 2010. According to a ''Forbes'' article, the idea for the line first came to Dan Spivey in 2007: Spivey contracted with a New York hedge fund to devise a low-latency arbitrage strategy, wherein the fund would search o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AboveNet
AboveNet was a provider of high bandwidth telecommunication circuits primarily for large corporate enterprises and communications carriers in 17 markets in the United States and 4 markets in Europe. Its private optical network delivered key network and IP services and was used in financial and legal services, media, health care, retail, and government. The company was formerly named Metromedia Fiber Network and changed its name to AboveNet in 2003 after emerging from bankruptcy. Before its bankruptcy in 2002, the company was financially backed by John Kluge and Verizon. In 2012, the company was acquired by Zayo Group for $2.2 billion in cash. History The company was founded in 1993 as AboveNet, by foundeSherman Tuan It initially focused 'one-hop' internet connectivity and providing dark fiber to communications carrier customers in the U.S. and Europe. In 1997, the company changed its name to Metromedia Fiber Network. In 1999, Metromedia acquired Abovenet Communications, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EQT Partners
EQT AB Group is a global investment organization founded in 1994. Its funds invest in private equity, infrastructure, real estate, growth equity, and venture capital in Europe, North America, and Asia Pacific. , EQT's assets under management are €90 billion / US$100 billion. It is ranked the third largest private equity firm worldwide based on funds raised. History The company was founded in 1994 by SEB, AEA Investors, and Investor AB. It established venture capital business, EQT Ventures in 2016 and went public in 2019 by IPO. In 2021, EQT acquired Life Sciences Partners, a European venture capital firm with approximately €2.2 billion of assets under management followed in 2022, by Baring Private Equity Asia managing funds of S$20.0 billion. Fund investments * 2017, Medical device company Clinical Innovations from the Pritzker Group for US$250 millionJonathan D. Rockoff"Private-Equity Group EQT to Buy Medical Device Company for $250 Million," ''The Wall Street Journa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethernet
Ethernet () is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1983 as IEEE 802.3. Ethernet has since been refined to support higher bit rates, a greater number of nodes, and longer link distances, but retains much backward compatibility. Over time, Ethernet has largely replaced competing wired LAN technologies such as Token Ring, FDDI and ARCNET. The original 10BASE5 Ethernet uses coaxial cable as a shared medium, while the newer Ethernet variants use twisted pair and fiber optic links in conjunction with switches. Over the course of its history, Ethernet data transfer rates have been increased from the original to the latest , with rates up to under development. The Ethernet standards include several wiring and signaling variants of the OSI physical layer. Systems communicating over Ethernet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synchronous Optical Networking
Synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diodes (LEDs). At low transmission rates data can also be transferred via an electrical interface. The method was developed to replace the plesiochronous digital hierarchy (PDH) system for transporting large amounts of telephone calls and data traffic over the same fiber without the problems of synchronization. SONET and SDH, which are essentially the same, were originally designed to transport circuit mode communications (e.g., DS1, DS3) from a variety of different sources, but they were primarily designed to support real-time, uncompressed, circuit-switched voice encoded in PCM format. The primary difficulty in doing this prior to SONET/SDH was that the synchronization sources of these various circuits were different. This meant that each ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wavelength-division Multiplexing
In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i.e., colors) of laser light. This technique enables bidirectional communications over a single strand of fiber, also called wavelength-division duplexing, as well as multiplication of capacity. The term WDM is commonly applied to an optical carrier, which is typically described by its wavelength, whereas frequency-division multiplexing typically applies to a radio carrier which is more often described by frequency. This is purely conventional because wavelength and frequency communicate the same information. Specifically, frequency (in Hertz, which is cycles per second) multiplied by wavelength (the physical length of one cycle) equals the velocity of the carrier wave. In a vacuum, this is the speed of light, usually denoted by the lowercase letter, c. In glass fiber, it is subst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dark Fibre
A dark fibre or unlit fibre is an unused optical fibre, available for use in fibre-optic communication. Dark fibre may be leased from a network service provider. Dark fibre originally referred to the potential network capacity of telecommunication infrastructure. Because the marginal cost of installing additional fibre optic cables is very low once a trench has been dug or conduit laid, a great excess of fibre was installed in the US during the telecom boom of the late 1990s and early 2000s. This excess capacity was later referred to as ''dark fibre'' following the dot-com crash of the early 2000s that briefly reduced demand for high-speed data transmission. These unused fibre optic cables later created a new market for unique private services that could not be accommodated on ''lit'' fibre cables (i.e., cables used in traditional long-distance communication). Motivations Much of the cost of installing cables is in the civil engineering work required. This includes planning ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SD-WAN
A software-defined wide area network (SD-WAN) is a wide area network that uses software-defined network technology, such as communicating over the Internet using overlay Tunneling protocol, tunnels which are encrypted when destined for internal organization locations. If standard tunnel setup and configuration messages are supported by all of the network hardware vendors, SD-WAN simplifies the management and operation of a WAN by decoupling the networking hardware from its control mechanism. This concept is similar to how software-defined networking implements virtualization technology to improve data center management and operation. In practice, proprietary protocols are used to set up and manage an SD-WAN, meaning there is no decoupling of the hardware and its control mechanism. A key application of SD-WAN is to allow companies to build higher-performance WANs using lower-cost and commercially available Internet access, enabling businesses to partially or wholly replace more ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
