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The telephone company provides for you a dialtone from the global telephone network. The wire carrying your dialtone will be attached to your home directly to the demarc. Demarch or Dmarc is short for "demarcation point" which is the point where the telephone company network ends and connects with the wiring at the customer premises. You may find the demarc on the inside or outside of your home or business. Plain old telephone service '''POTS''' is voice-grade telephone service employing analog signal transmission over copper loops. POTS is generally restricted to about 52 Kbps and cannot handle broadband speed. POTS, the traditional phone network is also known as the public switched telephone network '''PSTN'''. The telephone company provides for you a dialtone from the global telephone network. The wire carrying your dialtone will be attached to your home directly to the '''Demarc'''. Demarch or '''Dmarc''' is short for "demarcation point" which is the point where the telephone company network ends and connects with the wiring at the customer premises. You may find the demarc on the inside or outside of your home or business. A 66 block (also M-Block) is a type of punchdown block used to connect sets of wires in a telephone system. Often, more frequently in smaller commercial settings, the punch down block is the demarc.A '''66 block''' (also M-Block) is a type of punchdown block used to connect sets of wires in a telephone system. Often, more frequently in smaller commercial settings, the punch down block is the demarc.A '''DSLAM''' (Digital Subscriber Line Access Multiplexer) is a network device that may be at a telephone office or various points in a city where signals are received from multiple customer Digital Subscriber Line (DSL) connections which are in turn placed on a high-speed backbone line using multiplexing techniques. DSLAM multiplexers connect DSL lines with some combination of asynchronous transfer mode (ATM), frame relay, or Internet Protocol networks.