Multiple Dwelling Unit. Media Access Control See MAC. message A sequence of adjacent data packets transferred in a given direction. The end of such a message is defined to be the transfer on one or more adjacent data packets in the other direction. Message Jitter Starts with the abstraction of a communicated message. It measures the inter-packet gaps only for data packets within messages. It does not measure the packets between the messages themselves. See also jitter. Metropolitan Access Exchange See MAE.

multidwelling unit

Map designated unit. One metre (3.28 feet).

See Multiple Dwelling Unit.

Also known as a multi-tenant unit (MTU), MDU is a large building with multiple occupants, such as hotels or office buildings.

Multiple Disability Unit