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In the center there is an Optical Consolidation Rack for connecting the ISP to the outside plant cables that connect to customers. To the left there are Optical Line Terminals which send and receive data to customers as part of a PON network. Fiber to the premises can be categorized according to where the optical fiber ends:
With its U-verse product, AT&T (formerly SBC) had pursued a strategy of Fiber to the Neighborhood (FTTN) and had even delivered Fiber to the Premises (FTTP) prior to the services' launch. Currently, U-verse is deployed as a Fiber to the Hub (FTTH) service; the line connecting the hub to the home is a dual copper pair line.
These will typically take the form of a small, weather-proof box, mounted on the outside of the building. The telephone line from the telephone company will enter the NID and be connected to one side. The customer connects their wiring to the other side. A single NID enclosure may contain termination for a single line or multiple lines.
As the local loop becomes upgraded, with fiber optic and coaxial cable technologies sometimes replacing the original unshielded twisted pair to the premises, the demarcation point has grown to incorporate the equipment necessary to interface the original premises POTS wiring and equipment to the new communication channel.
Diagram originally published by the Fiber Optics LAN Section of the Telecommunications Industry Association. Fiber to the Edge (FTTE), fiber to the telecom enclosure (FTTTE) or fiber to the zone (FTTZ), [1] is a fiber to the x networking approach used in the enterprise building (hotels, convention centers, office buildings, hospitals, senior living communities, Multi-Dwelling Units, stadiums ...
AT&T Fiber, or as it is known AT&T Internet powered by Fiber, [2] provides fiber to the home (FTTH) service in select markets. Historically a form of AT&T Fiber Internet launched in the fall of 2013 branded as GigaPower, and bundled with U-verse TV as "U-verse with GigaPower". [3] Basic, Express, Pro, Elite and Max (VDSL) are usually available ...
Local Loop. In telephony, the local loop (also referred to as the local tail, subscriber line, or in the aggregate as the last mile) 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.
Cross-connect box (left) and VRAD (right) on a suburban street in Houston, Texas.. A video-ready access device (VRAD) provides digital subscriber line access and high-definition television programming to customers subscribed to IPTV services such as AT&T's U-verse, Bell Canada's Bell Fibe TV, Claro Puerto Rico's Claro TV, and Telus's Optik TV.