Fax transmission over a PLMN using a home gateway connected to the originating fax terminal equipment, comprising: sending a call setup request for a fax call destined towards a terminating fax terminal equipment, receiving at the originating fax terminal equipment a reply from the home gateway, sending every data from the originating fax terminal equipment to said home gateway and storing them in the home gateway, sending a call establishment request from the home gateway to the PLMN and at least one connection establishment request from the home gateway to the terminating fax terminal equipment, waiting for a connection establishment confirmation from the terminating fax terminal equipment within a configurable time, when the connection establishment confirmation is received, sending from the home gateway every stored data to the terminating fax terminal equipment through the PLMN and optionally a notification on the fax transmission status, at least provisional, to the originating fax terminal equipment.