Signaling Link Selection (SLS) Routing

A Signaling Link Selection (SLS) value is a 5- or 8-bit integer (ANSI) or 4-bit integer (ITU) that is used to identify the linkset and link to which a message is to be transported.

The SLS value is included in the SLS field, which is part of the MSU’s MTP routing label. The SLS is used to evenly distribute traffic across routes and links, assuming that the SLS values are randomly distributed by the originating node.

The Oracle Communications SS7-over-IP solution follows standard SLS load sharing with IPLIMx. With IPGWx, SLS values are distributed over the associations in the Application Servers.