In communications systems, a facility in which switches are used to interconnect communications circuits on a circuit-, message-, or packet-switching basis. Synonyms, in telephony, central office, switching exchange, switching facility. Deprecated synonym yyswitch.

Synonym switching center.

Synonym switching center.

1. A communications system consisting of switching centers and their interconnecting media.
2. Part of a communication system organized to temporarily associate functional units, transmission channels or telecommunication circuits for the purpose of providing a desired telecommunication facility.
Note: Examples of NATO-owned switching systems are IVSN and TARE.

Synonym yyswitch.

Abbreviation for standing wave ratio.

Abbreviation for simplex signaling.

Abbreviation for step-by-step switching system.

[A] list of individual letters, combination of letters, or syllables, with their equivalent code groups, used for spelling out words or proper names not present in the vocabulary of a code. A syllabary may also be a spelling table. [INFOSEC-99]

A character string or a bit string in a word.