# What is GTT (Global Title Translation)?

> GTT (Global Title Translation) is the SCCP-layer function that resolves a global title — a network address such as an E.164 or E.214 number — into the point code and subsystem number needed to route SS7 signaling to the right node: an HLR, SMSC, or MSC. Because senders address a global title rather than a physical point code, GTT is where operators (and SS7 firewalls) steer and screen inter-network SMS and MAP signaling. See /answers/ss7-global-title, /answers/what-is-sccp, and /operators/ss7-firewall.

- Canonical URL: https://www.broadnet.me/answers/what-is-gtt
- Language: en
- Last reviewed: 2026-07-22
- Publisher: BroadNet (https://www.broadnet.me)

## Related

- [All answers](https://www.broadnet.me/answers)
- [Glossary](https://www.broadnet.me/answers)
- [GT — Global Title in SS7 routing explained](https://www.broadnet.me/answers/ss7-global-title)
- [What is SCCP?](https://www.broadnet.me/answers/what-is-sccp)
- [OPC and DPC — SS7 Point Codes explained](https://www.broadnet.me/answers/ss7-opc-dpc)
- [SS7 MAP — what it is and why messaging still depends on it](https://www.broadnet.me/answers/ss7-map-explained)
- [SS7 Firewall](https://www.broadnet.me/operators/ss7-firewall)
- [Signaling & CDR Intelligence](https://www.broadnet.me/platforms/signaling-cdr)