Optimizing remote vs. local control of standard call setup procedures in a distributed network control architecture

Compares SS7 (Signalling System No.7) TCAP message content for two extreme cases of distributed service switching point (SSP) and service control point (SCP) call control. The analysis considers impacts to SS7 A link capacity, delay, functional requirements of the SSP and SCP applications, and distributed control flexibility. Performance considerations for providing STP and SCP functionality co-resident in the switch are also included. A service example with interworking and between SS7 TCAP and ISDN (integrated services digital network) Q.931 and between SS7 ISDN-UP and SS7 TCAP is used to illustrate the analysis of distributed call control cases.<>