A Global Title (GT) is an address used in the SCCP protocol for routing signalling messages on various telecommunications networks. Theoretically, global titles are unique addresses which refer to only one destination, but in practice those destinations can change over a given time-frame.
GT title structure is defined by the ITU-T signalling connection control part formats and codes recommendation (Q.713), further extended in the supporting numbering plan standards. Other national variants of Signalling Connection Control Part (SCCP) define their own format for the Global Title. The value of a global title is a sequence of attributes which modify the address value.