> 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/ss7-and-signalling/sccp.md).
# SCCP
 The Signaling Connection Control Part (SCCP) layer provides connectionless network services and an address translation mechanism, called global title translation (GTT), capability above [MTP3](/telecom-references/ss7-and-signalling/mtp3.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](/telecom-references/ss7-and-signalling/tcap.md)-based services within the [OSI model](/telecom-references/ss7-and-signalling/ss7/osi-model.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://prosbcdocs.telcobridges.com/tmedia-documentation/other-pages/protocol-stacks-general/tmedia-tdev-and-tsig-web-portal-3-0-protocol-stacks#sccp-tcap)
Click here for other versions
* [SCCP and TCAP Configuration Version 2.10](https://prosbcdocs.telcobridges.com/tmedia-documentation/configuration/web-portal-previous/web-portal-2-10/tmedia-tdev-and-tsig-web-portal-2-10-protocol-stacks#sccp-tcap)
* [SCCP and TCAP Configuration Version 2.9](https://prosbcdocs.telcobridges.com/tmedia-documentation/configuration/web-portal-previous/web-portal-2-9/web-portal-2-9-protocol-stacks#sccp-tcap)
* SCCP and TCAP Configuration Version 2.8 and earlier: documentation is no longer published. Contact [technical support](https://prosbcdocs.telcobridges.com/tmedia-documentation/operations-and-support/support/contacting-telcobridges-technical-support) if you need it.
### References
* [Wikipedia article](http://en.wikipedia.org/wiki/Signalling_Connection_Control_Part)
* [Supported standards and variants](/telecom-references/ss7-and-signalling/sccp/sccp-specification.md)
* [Software Architecture](/telecom-references/ss7-and-signalling/sccp/sccp-architecture.md)
* [WebPortal Configuration steps](https://prosbcdocs.telcobridges.com/tmedia-documentation/configuration/web-portal-3-3)
* [API Configuration steps](/telecom-references/ss7-and-signalling/sccp/sccp-api-configuration.md)
* [API Alarms](/telecom-references/ss7-and-signalling/sccp/alarms.md)
* [API States](/telecom-references/ss7-and-signalling/sccp/sccp-api-states.md)
* [API Statistics](/telecom-references/ss7-and-signalling/sccp/sccp-api-statistics.md)
## In this section
* [Alarms](/telecom-references/ss7-and-signalling/sccp/alarms.md)
* [Connectionless Service](/telecom-references/ss7-and-signalling/sccp/connectionless-service.md)
* [Error Performance Report](/telecom-references/ss7-and-signalling/sccp/error-performance-report.md)
* [General Statistics](/telecom-references/ss7-and-signalling/sccp/general-statistics.md)
* [Global Title Translation Association](/telecom-references/ss7-and-signalling/sccp/global-title-translation-association.md)
* [GTT Address Map Configuration](/telecom-references/ss7-and-signalling/sccp/gtt-address-map-configuration.md)
* [GTT Association Configuration](/telecom-references/ss7-and-signalling/sccp/gtt-association-configuration.md)
* [Interworking](/telecom-references/ss7-and-signalling/sccp/interworking.md)
* [LSAP Statistics](/telecom-references/ss7-and-signalling/sccp/lsap-statistics.md)
* [Management](/telecom-references/ss7-and-signalling/sccp/management.md)
* [SCCP Address Map](/telecom-references/ss7-and-signalling/sccp/sccp-address-map.md)
* [SCCP Addressing](/telecom-references/ss7-and-signalling/sccp/sccp-addressing.md)
* [SCCP Architecture](/telecom-references/ss7-and-signalling/sccp/sccp-architecture.md)
* [SCCP Association Action](/telecom-references/ss7-and-signalling/sccp/sccp-association-action.md)
* [SCCP class](/telecom-references/ss7-and-signalling/sccp/sccp-class.md)
* [SCCP Configuration of layer](/telecom-references/ss7-and-signalling/sccp/sccp-configuration-of-layer.md)
* [SCCP managament](/telecom-references/ss7-and-signalling/sccp/sccp-managament.md)
* [SCCP Messages](/telecom-references/ss7-and-signalling/sccp/sccp-messages.md)
* [SCCP Route Backup Point Code](/telecom-references/ss7-and-signalling/sccp/sccp-route-backup-point-code.md)
* [SCCP Route SSN Backup Point Code](/telecom-references/ss7-and-signalling/sccp/sccp-route-ssn-backup-point-code.md)
* [SCCP Routing](/telecom-references/ss7-and-signalling/sccp/sccp-routing.md)
* [SCCP Specification](/telecom-references/ss7-and-signalling/sccp/sccp-specification.md)
* [SCCP/API Configuration](/telecom-references/ss7-and-signalling/sccp/sccp-api-configuration.md)
* [SCCP/API Route Statistics](/telecom-references/ss7-and-signalling/sccp/sccp-api-route-statistics.md)
* [SCCP/API States](/telecom-references/ss7-and-signalling/sccp/sccp-api-states.md)
* [SCCP/API Statistics](/telecom-references/ss7-and-signalling/sccp/sccp-api-statistics.md)
* [SCCP/API Userpart Statistics](/telecom-references/ss7-and-signalling/sccp/sccp-api-userpart-statistics.md)
* [Traffic Limitation and Congestion Control](/telecom-references/ss7-and-signalling/sccp/traffic-limitation-and-congestion-control.md)
* [UDT](/telecom-references/ss7-and-signalling/sccp/udt.md)
* [UDTS](/telecom-references/ss7-and-signalling/sccp/udts.md)
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