> 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/sccp.md). # SCCP ![Schematic showing SCCP in the OSI model](https://docs.telcobridges.com/w/images/d/db/SCCP-OSI_model.jpg) The Signaling Connection Control Part (SCCP) layer provides connectionless network services and an address translation mechanism, called global title translation (GTT), capability above [MTP3](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/mtp3/README.md). A global title can translate a string of digits (e.g., a dialled 800 number, calling card number, or mobile subscriber identification number) into a destination point code and/or subsystem number. A subsystem number uniquely identifies an application at the destination signaling point. SCCP provides the transport layer for [TCAP](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/tcap/README.md)-based services within the [OSI model](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/signalling/osi-model/README.md). The schematic on the right show how SCCP fits into the OSI model. ### Features SCCP supports the following features: * Routing and translation functions. * Management functions. * Transfer of data without logical signaling connections. The SCCP software supports two classes of service, in connectionless mode: * Class 0: Basic connectionless class. * Class 1: Sequenced connectionless class. ### TelcoBridges and SCCP TelcoBridges supports SCCP as part of its SS7 signaling stack. ### Related actions **Refer to the appropriate Toolpack release:** * [SCCP and TCAP Configuration Version 3.0](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/tmedia-tdev-and-tsig-web-portal-3-0-protocol-stacks/README.md#sccp-tcap) * [SCCP and TCAP Configuration Version 2.10](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/tmedia-tdev-and-tsig-web-portal-2-10-protocol-stacks/README.md#sccp-tcap) * [SCCP and TCAP Configuration Version 2.9](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/web-portal-2-9-protocol-stacks/README.md#sccp-tcap) * [SCCP and TCAP Configuration Version 2.8](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/web-portal-2-8-protocol-stacks/README.md#sccp-tcap) \- \[Web Portal v2.7: TCAP and SCCP Configuration]\(/tmedia/configuration/tmedia-tsig-and-tdev-web-portal-2-7-tutorial-guide#sccp-tcap) - \[Web Portal v2.6: TCAP and SCCP Configuration]\(/tmedia/configuration/tmedia-tsig-and-tdev-web-portal-2-7-tutorial-guide#sccp-tcap) - \[Toolpack v2.5: SS7 Signaling : SCCP Configuration steps]\(/tmedia/configuration/tmedia-tsig-and-tdev-web-portal-2-5-tutorial-guide#configuring-ss7) - \[Toolpack v2.3: SS7 Signaling : SCCP Configuration steps]\(/tmedia/configuration/tmedia-tsig-and-tdev-web-portal-2-3-tutorial-guide#ss7-signaling) ### References * [Wikipedia article](http://en.wikipedia.org/wiki/Signalling_Connection_Control_Part) * [Supported standards and variants](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sccp-specification/README.md) * [Software Architecture](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sccp-architecture/README.md) * [WebPortal Configuration steps](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/tmedia-tsig-and-tdev-web-portal-2-5-tutorial-guide/README.md#configuring-ss7) * [API Configuration steps](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sccp-api-configuration/README.md) * [API Alarms](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/alarms/README.md) * [API States](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sccp-api-states/README.md) * [API Statistics](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sccp-api-statistics/README.md) --- # Agent Instructions This documentation is published with GitBook. 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