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DSLAM

DSLAM

(also digital subscriber line access multiplexer)

DSLAM definition

A network device utilized by ISPs (Internet Service Providers) that combines several digital subscriber lines (DSL) into a single high-speed uplink. Subscribers’ networks are linked to ISPs via extremely fast uplinks, which can be Asynchronous Transfer Mode (ATM) or Gigabit Ethernet. DSLAM equipment is often housed at centralized hubs, such as telephone switching centers. They make it possible for DSL technology to be transmitted quickly over existing copper lines. These devices use sophisticated multiplexing methods to repurpose the millions of copper lines initially installed for telephone use in the 1950s. DSLAMs have many cutting-edge traffic management technologies for segmenting and prioritizing video, voice, and data transmissions.

Benefits of DSLAM

  • Combining multiple digital subscriber line signals for a faster internet connection.
  • Linking a user’s computer with the ISP.
  • Supporting one to tens of thousands of subscribers, depending on the type of DSLAM and its functionality.

Properties of DSLAM

  • Multiplexer. DSLAM’s multiplexing abilities encode voice and data signals from the phone company to the ISP. Some DSLAMs support hundreds to thousands of connections. This demands many resources to execute and maintain.
  • Data switch. DSLAM’s data switching capabilities are required for internet access. Data switching connects services for several customers. When a switch is free, another connection can be made.
  • Collection of modems. DSLAM is a vast collection of modems that connect customers to their services. DSLAM modems can reduce echoes or other disruptions from the line to boost bandwidth and connection speed.

Further reading

Ultimate digital security