> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/protocols/gtt.md).

# GTT

**Global title translation** (GTT) is the [SS7](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) equivalent to IP routing. Translation examines the destination address (e.g. the number being called) and decides how to identify it over the telephone network. This process can include *global title analysis*, which is the act of looking up the number and finding a result address, and *global title modification*.

It is possible for the result of **Global Title Translation** to be **Route on** [**SSN**](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/sub-system-number/README.md). This means that, instead of the Global Title routing, lower level MTP routing will be used for this message from this point on. Equivalently, in a system using [SIGTRAN](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/), the result from Global Title Translation may be to a route to an IP server.

### Reference

<http://en.wikipedia.org/wiki/Global\\_Title>


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