The A$120 / NZ$160 adapter uses existing analogue telephone handsets to make VoIP calls, it also provides a failover port to a traditional telephone service.
The DVG-2101SP's "lifeline" phone port relays outgoing phone calls to a public switched telephone network (PSTN) connection in case a power outage occurs or when an Internet service is not available.
An LED display informs the user whether calls are being made over the Internet or PSTN.
"D-Link's latest VoIP Telephone Adapter provides everything that home or small business users need to make them comfortable with VoIP technology," said Maurice Famularo, marketing director D-Link A/NZ.
"It is affordable less than half the cost of a new VoIP phone because it works with existing telephones.
"It is safe with the lifeline phone port you can use a regular phone line as an emergency backup. And it is smooth, providing the latest technology to ensure that calls are of a high quality."
The DVG-2101SP includes transfer, caller ID display, 3-way conference, phone book, speed dialling and hot lines and supports voice VLAN, or virtual LAN.