Definitions for "MESSAGE UNIT"
Keywords:  qel, queue, extension, variable, length
An extension to a queue element ( QEL) containing variable-length data.
Unit of charge for local calls within local service areas where multi-unit rate treatment is applicable.
Standard against which charges for messages based on time and distance are measured.
U.S. term for unit of measure for charging local calls that details the length of call, distance called, and time of day.