Focal Illustrated Dictionary of Telecommunications

T

TA: Terminal Adapter.

table of frequency allocations: A table published in the ITU Radio Regulations which allocates the frequency spectrum from 9 kHz to 275 kHz into about 400 bands. The bands are radio services. As different countries use radio facilities in different proportions, the frequency allocation is not rigid and allows for some flexibility. This is partly achieved by having different allocations in different geographic regions, and by allocating some bands to more than one service, resulting in shared bands.

tackline: A length of rope, or halyard, used in visual signalling systems, using flags, to separate flags that would convey a different meaning if left contiguous.

TACS: Total Access Communications System or Total Access Cellular ...