A "logical" or "virtual" address used for routing Signaling System No.7 (SS7) messages using signaling connection control part (SCCP) capabilities. To complete message routing, a GT must be translated to a SS7 point code and subsystem number. [T1.711-1999]

Any graphic symbol not in the ASCII character set. [After IS 14651]

Gateway Mobile Switching Center

Abbreviation for Greenwich Mean Time. Obsolete term. See Coordinated Universal Time.

Global Navigation Satellite System

Synonyms bookmark list, history list, hotlist.

Synonym go-ahead notice.

In a tape-relay communications system, a service message, usually sent to a relay station or to a tributary station, that contains a request to the operator to resume transmitting over a specified channel or channels. [From Weik '89] Synonyms go-ahead message, start message, start notice.

In communications systems, an audible signal transmitted by a system indicating that the system is ready to receive a message or signal. [From Weik '89]

In spread-spectrum systems, a code that is generated by summing, using modulo-two addition, the outputs of two spread-spectrum code-sequence generators. [From Weik '89]