There are many VoIP adapters available on the market. Some adapters allow you to connect a
VoIP Adapters
regular analog phone to the digital VoIP data Internet circuits. Some adapters connect through USB to a computer that is connected to the Internet. Some are stand alone phone adapters that can be wired or wireless and connect to the Internet via an IP routed port. The adapters use Quality of Service (QoS) which provides priority to voice communications to limit lag. Otherwise the possible lag would interrupt and distort the communications.
VoIP Phone Adapters
The Cisco Linksys VoIP phone adapter is one of the best. They can quickly and easily convert existing analog phones and faxes to IP data circuits. The Cisco Linksys adapters have been very popular with many good reviews for reliable connections to any VoIP service.
The Zoom VoIP telephone adapter is another entry into this popular and competitive market. D-Link also has some product offerings that are showing good performance for the price.
The phones and services are showing some real promise and even the cellular providers are making VoIP service available in their phones for Wi-Fi hot spot areas. These feature can be very valuable for overseas travelers who want to keep in touch with family and friends at very reasonable cost.
You might also visit the VoIP Adapter website for some additional information that you might find useful.