We’ve been cooperating with the telecommunications company Iskratel, d.o.o. from Kranj for more than three decades. The co-operation started in 1983, when we set up the first local-area computer network. We were transferring knowledge from the field of telecommunications to practice in analogue as well as digital access. At the moment we are actively cooperating in the field of IP telephony. Our footprints can be found in protocol stacks X.25, DSS1, ASMI, V5.1, V5.2, QSIG, AAL1, AAL2, IUA, V5UA, MAP, MGCP and SIP, with all adjustments that are needed for the inclusion of various products into heterogeneous telecommunications networks.