A gateway (G) between an Internet network (N) and a local network (NL) associated with a building constituted by a plurality of private premises and at least one common area; the common area and at least some of the private premises having multimedia terminals (T1, T2, T3, TP, . . . ) connected to the local network (NL). The gateway is characterized in that it comprises execution means for executing extended services downloaded from a server (S) accessible via said Internet network (N).