AMAI means Alternate Mark Inversion. it is a line-code type on T1 and E1 circuits that shows zeros as "01" during each bit cell, and ones as "11" or "00," alternately, during each bit cell. The sending device must maintain ones density in AMI but not independently of the data stream. Also known as binarycoded, alternate mark inversion.

Digital signals sent without precise timing, usually with different frequencies and phase relationships. Asynchronous transmissions generally enclose individual characters in control bits (called start and stop bits) that show the beginning and end of each character.

Asynchronous Time-Division Multiplexing: A technique for sending information, it differs from normal TDM in that the time slots are assigned when necessary rather than preassigned to certain transmitters.

A routing algorithm that allows each router to broadcast or multicast information regarding the cost of reaching all its neighbors to every node in the internetwork. Link-state algorithms provide a consistent view of the network and are therefore not vulnerable to routing loops. However, this is achieved at the cost of somewhat greater difficulty in computation and more widespread traffic.

Multilayer switching combines layer 2, 3, and 4 switching technology and provides very high-speed scalability with low latency. This is provided by huge filter tables based on the criteria designed by the network administrator.