Analysis of congestion control for SCCP traffic and the impact on intelligent network services

This paper investigates the impact of common channel signalling (CCS) link overload and signalling connection control part (SCCP) overload control for links supporting intelligent network (IN) services, one of the major users of the SCCP signalling layer. In particular, it examines a number of network congestion scenarios involving IN services and the impact of CCS overload for those links supporting a mixture of IN traffic and PSTN (ISUP) traffic.