Describes the width of the pipe into the customer. ’Bandwidth on demand’ refers to the ability to increase the bandwidth as needed.

  Time taken to deliver a packet from the source to the receiver. Includes propagation delay (the time taken for the electrical or optical signals to travel the distance between the two points) and pr [..]

  10 Mbps baseband Ethernet specification using 50 ohm thin coaxial cable. Also known as Thin Ethernet.

  100 Mbps baseband Fast Ethernet specification using two strands of multimode fibre-optic cable per link. To guarantee proper signal timing, a 100BaseFX link cannot exceed 1312 feet (400 meters) in l [..]

  10 Mbps baseband Ethernet specification using two pairs of twisted-pair cabling.

  100 Mbps baseband Fast Ethernet specification using UTP wiring. Like the 10BaseT technology on which it is based, 100BaseT sends link pulses over the network segment when no traffic is present. Howe [..]

  Add/Drop Multiplexer. A device which inserts lower rate channel traffic [add] or removes the traffic [drop] from a higher rate aggregate channel in a synchronous transmission network (SDH or SONET). [..]

  Asymmetric Digital Subscriber Loop. A family of technologies used to deliver high-rate digital data over the existing copper local loop. One-way rates of up to 6 Mbps downstream (from the central of [..]

  American National Standards Institute. www.ansi.org

  Seventh (top) layer in the OSI seven layer model. Layer Contains functions for particular applications services such as file transfer.