A competitive local exchange carrier (CLEC), in the United States and Canada, is a telecommunications provider company (sometimes called a "carrier") competing with other, already established carriers, generally the incumbent local exchange carrier (ILEC).
Local exchange carriers (LECs) are divided into incumbent (ILECs) and competitive (CLECs). The ILECs are usually the original, monopoly LEC in a given area, and receive different regulatory treatment from the newer CLECs. A data local exchange carrier (DLEC) is a CLEC specializing in DSL services by leasing lines from the ILEC and reselling them to Internet service providers (ISPs). [1]
CLECs evolved from the competitive access providers (CAPs) that began to offer private line and special access services in competition with the ILECs beginning in 1985. [2] The CAPs (such as Teleport Communications Group (TCG) and Metropolitan Fiber Systems (MFS)) deployed fiber optic systems in the central business districts of the largest U.S. cities (New York, Chicago, Boston, etc.) A number of state public utilities commissions, particularly New York, [3] Illinois, and Massachusetts, encouraged this competition. By the early 1990s, the CAPs began to install switches in their fiber systems. Initially, they offered a "shared PBX" service with these switches and interconnected with the ILECs as end users rather than as co-carriers. However, the New York Public Service Commission authorized the nation's first CLEC when it required the New York Telephone (the ILEC) to allow Teleport Communications Group's switches in New York City to connect as peers. [3] Other states followed New York's lead so that by the mid-1990s most of the large states had authorized local exchange competition.
The Telecommunications Act of 1996 incorporated the successful results of the state-by-state authorization process by creating a uniform national law to allow local exchange competition. This had the unintended consequence of stimulating the formation of many more CLECs than the markets could bear. The formation of these CLECs, with easy financing from equipment vendors and IPOs, was a significant contributor to the "telecom bubble" of the late 1990s which then turned into the "bust" of 2001–2002. [2]
The original CAP/CLECs spent the decade from 1985–1995 deploying their own fiber optics networks and digital switches so that their only reliance on the ILEC was leasing some DS-1 loops to locations not served by the CLEC's own fiber and interconnecting the CLEC's switches with the ILECs' on a peer-to-peer basis. [2] While not trivial dependencies, the original "facilities-based" CLECs such as TCG and MFS were beginning to become profitable by the time the Telecom Act was adopted. In contrast, many CLECs formed in the post-Telecom Act "bubble" operated using the unbundled Network Element Platform (UNE-P), in which they resold the ILECs' service by leasing the underlying copper and port space on the ILEC's local switch. This greater dependency on the ILECs made these "UNE-P CLECs" vulnerable to changes in the UNE-P rules.
In the meantime, the largest facilities-based CLECs, MFS, and TCG, had IPOs and then were acquired by WorldCom and AT&T, respectively, in 1996 and 1998 as those long distance companies prepared to defend their business customers from the Regional Bell Operating Companies' (RBOC) incipient entry into the long distance business.
With the Triennial Review in August 2003, the FCC began to rewrite a large portion of the rules implementing the Telecommunications Act of 1996. One alternative to the UNE-P is unbundled network element loop (UNE-L), in which the CLEC has access to or operates their own local switch. [2] The underlying copper (loop) that runs to the subscriber's premises is then leased by the CLEC, and cross-connected to the CLEC's switch. Both UNE-P and UNE-L have their own unique advantages and disadvantages. Other CLECs bypass the ILEC's network entirely, using their own facilities. These facility-based LECs include cable companies offering phone service over coaxial cable.
Non facilities-based CLECs that operate under the UNE-P rules are able to resell wholesale services purchased from multiple ILECs, thereby establishing broader geographical coverage than ILECs or facilities-based CLECs.
In October 2004, the U.S. Supreme Court allowed a lower court's ruling to stand (by refusing to hear the appeal) that voided rules requiring ILECs to lease certain network elements (such as local switching or the high-frequency portion of the loop) at a cost-based regulated wholesale price to CLECs. [4] The FCC agreed earlier in the year to rewrite rather than appeal the validity of the rules. In December 2004, the FCC released another set of rules which phase out, over a year, all CLEC leasing of ILEC local switching, while preserving access to most copper local loops and some interoffice facilities. [5]
In May 2018, USTelecom, the Washington, D.C. trade group for the major telecommunication companies, filed a petition with the FCC, asking it to end the leasing rule within 2+1⁄2 years, which would terminate the CLEC operations of smaller telecommunications companies. [6] [7]
Local loop unbundling is the regulatory process of allowing multiple telecommunications operators to use connections from the telephone exchange to the customer's premises. The physical wire connection between the local exchange and the customer is known as a "local loop", and is owned by the incumbent local exchange carrier. To increase competition, other providers are granted unbundled access.
Digital subscriber line is a family of technologies that are used to transmit digital data over telephone lines. In telecommunications marketing, the term DSL is widely understood to mean asymmetric digital subscriber line (ADSL), the most commonly installed DSL technology, for Internet access.
Local exchange carrier (LEC) is a regulatory term in telecommunications for the local telephone company.
In telephony, the local loop is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the common carrier or telecommunications service provider's network.
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An incumbent local exchange carrier (ILEC) is a local telephone company which held the regional monopoly on landline service before the market was opened to competitive local exchange carriers, or the corporate successor of such a firm.
Local number portability (LNP) for fixed lines, and full mobile number portability (FMNP) for mobile phone lines, refers to the ability of a "customer of record" of an existing fixed-line or mobile telephone number assigned by a local exchange carrier (LEC) to reassign the number to another carrier, move it to another location, or change the type of service. In most cases, there are limitations to transferability with regards to geography, service area coverage, and technology. Location Portability and Service Portability are not consistently defined or deployed in the telecommunication industry.
A naked DSL, also known as standalone or dry loop DSL, is a digital subscriber line (DSL) without a PSTN service — or the associated dial tone. In other words, only a standalone DSL Internet service is provided on the local loop.
In telecommunications a point of interface (POI) is used to show the physical interface between two different carriers, such as a local exchange carrier (LEC) and a wireless carrier, or an LEC and an IntereXchange Carrier (IXC). This demarcation point often defines responsibility as well as serving as a point for testing. In many cases, a POI exists as a point of demarcation ("DEMARC") within an LEC building, and is established under "co-location" agreements. A long distance, wireless, or competitive local carrier "rents" space at the local telephone location.
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Unbundled network elements (UNEs) are a requirement mandated by the United States Telecommunications Act of 1996. They are the parts of the telecommunications network that the incumbent local exchange carriers (ILECs) are required to offer on an unbundled basis. Together, these parts make up a local loop that connects to a digital subscriber line access multiplexer (DSLAM), a voice switch or both. The loop allows non-facilities-based telecommunications providers to deliver service without having to lay network infrastructure such as copper wire, optical fiber, and coaxial cable.
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USTAv.FCC is the 2004 court case in which the Washington, D.C., Circuit Court of Appeals vacated the Federal Communications Commission's Triennial Review Order (TRO). The court's decision is based on the Telecommunications Act of 1996 section 251 which defines unbundled network elements (UNEs) for incumbent local exchange carriers and competitive local exchange carriers.
Total element long-run incremental cost (TELRIC) is a calculation method that the United States Federal Communications Commission (FCC) requires incumbent local exchange carriers (ILECs) to use to charge competitive local exchange carriers (CLECs) for interconnection and colocation, effectively imposing a price ceiling. A variant of long-run incremental cost (LRIC), it "measures the forward-looking incremental cost of adding or subtracting a network element" from a hypothetical system. This allows the incumbent to recover a share of the fair value of their inputs in the long run.
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