Signalling Links And Linkset

A Signalling Link is the physical time slot within an E1 or T1 – connected at both ends to “signalling terminals”. A signalling link is a bi-directional channel used for exchange of signalling information (see ITU-T Q.702 for more details).

LinkSet is signalling relation between two “adjacent” SPCs (Signalling Point Codes). A LinkSet is a group of Links between two adjacent SPCs. In ITU-T SS7 (ITU-T MTP layers), a LinkSet can have maximum of 16 links (due to 4 bit SLS field) whereas in ANSI SS7 (ANSI MTP layers) a LinkSet can have maximum of 32 links (due to 5 bit SLS field).