Network system using common channel signalling

摘要

A node is a signalling end point that handles a control signal of the common channel signalling system. Four IP-STPs are signalling transfer points that transfers the control signals. A node and four IP-STPs belong to a logical network A identified by a network identifier NI=0, and four IP-STPs belong to a logical network B identified by a network identifier NI=15. In the logical network A, only one signalling point code is allocated to the four IP-STPs. The control signal is transferred using the network identifier NI and signalling point code SPC.