SCCP:Architecture
The SCCP software supports these functions:
- Connectionless Service
- Management
- Routing
- Traffic Limitation and Congestion Control (ITU-96)
- Interworking
SCCP provides the functions and procedures to transfer data across an SS7 network. SCCP is a
service provider to TCAP and a service user of MTP Level 3 (as shown in the figure immediately below).
A SCCP layer has a Network section which represents a network identifier for a specific protocol
variant. For a Network you must define:
- LSAP(s)
- Routes (for a specific or range of destination point codes (DPC))
- Userpart
SCCP LSAP must be associated with one MTP3 Userpart via a 1-to-1 association. A SCCP Route indicates a DPC that is an accessible from this SCCP configuration node and their SSN.
SCCP Userpart can be used in conjunction with an above local TCAP layer and can be used as a standalone and communicates with remote TCAP8 layer (host application). See the connection mode table in the SCCP Userpart Configuration section.
A SCCP layer has a Userpart section which represents a sub-system number.
