This product is either discontinued or we cannot get that from suppliers.
Netcomm EM1690B High impact ABS plastic, Separating ADSL2+ and VDSL2 connections from telephone line signal, Connecting phone or fax and ADSL/VDSL2+ gateway to a single telephone wall socket without disruption or interference, Filtering out signal noises from the telephone line.
DSL technology is the most common way to deliver high speed Internet to homes and businesses in Australia. It uses copper phone lines installed from the local telephone exchange to the premises.