UNIT – V I: Telephone Instruments and Signals The Subscriber Loop
{"Image DocumentName": "The Subscriber Loop", "Image ImageDescription": "The simplest and most straight forward form of telephone service is called plain old telephone services(POTS), which involves subscribers accessing the public telephone network through pair of wires called the local subscriber loop (or simply local loop). A local loop is simply an unshielded twisted - pair transmission line (cable pair), consisting of two insulated conductors twisted together. The subscriber loop provides the means to connect a telephone set at a subscriber location to the closest telephone office, which is commonly called an end office, locale change office, or central office. Once in the central office, the subscriber loop is connected to an electronic switching system (ESS), which enables the subscriber to access the telephone network.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}