AN OVERVIEW OF SIGNALING SYSTEM NO-7

In modern telecommunication networks, signaling constitutes the distinct control infrastructure that enables provision of ALL other services. The component of signaling systems that controls provision of services between the user and the network is the access signaling component, and the component that controls provision of services within the network, or between networks, is the network signaling component. There are international standards for both access signaling and network signaling protocols. From a network structure viewpoint, access signaling structures generally provide point-to-point connectivity between the user and a network node, while network signaling structures provide network-wide communication capability (directly or indirectly) between the nodes of the public network(s). Since the network signaling system acts as a traffic collector/distributor for many access signaling tributaries, its functions are more complex. its structure more in involved, and its performance more stringent. This paper provides an overview of modern network signaling systems based on the Signaling System No. 7 international standard.