VOIP telephony and PBX’s are replacing the old analog PABX’s and telephones. Although cell phones are seen as replacements for ‘landlines’, this is still not the case. Fibre based internet provides a great platform for low cost VOIP service to the house. Within the house, the inexpensive PBX’s allow VOIP phones (available as both Video/Audio and Audio only) to be used as intercoms, phone extensions and video/audio extensions to door and gate stations. Even cell phones can become part of the VOIP phone system with appropriate apps.