The Linksys Phone Adapter enables high-quality feature-rich telephone service through your cable or DSL Internet connection. Just plug it into your home router or gateway and use the two standard telephone jacks to connect your existing phones or fax machines. Each phone jack operates independently, with separate phone service and phone numbers--like having two phone lines.
Warning! Some of the current Linksys VOIP products are locked to the Vonage service. If you buy one, it can only be used to connect to Vonage. The model numbers that end in -NA (such as PAP2-NA) seem to be the generic ones that can be used with any service.

AT&T offers a phone that functions as both a regular cordless phone and a PC phone. The cordless handset has a 900 MHz transmission and 30-channel autoscan for secure calls and clear conversations. Use the phone as a PC phone and enjoy the low-cost benefits of long-distance Internet calls. The sound quality is a big improvement over the traditional PC microphone and speaker setup. The phone is also headset compatible (2.5 millimeter jack) for hands-free use. In order to make internet calls, you will need a PC running Windows 95, 98, or equivalent; a sound card; and an internet connection that supports VoIP and VoIP client software.

The Prestige 2000W, compatible with the IEEE 802.11b wireless standard, is a perfect solution for voice over-internet protocol (VoIP) applications. It lets you make or receive phone calls as long as they are in the coverage of IEEE 802.11b or 11g wireless access points. With the Prestige 2000W, you no longer have to pay expensive communication fees and can enjoy the convenience of wireless mobility.

The Prestige 200W offers flexibility and ease-of-use in both land and wireless environments. See a detailed view of possible connections. This brand new application is developed to support open standard SIP (session initiation protocol), which interoperates with major SIP-based call servers, IP-PBXs, and various VoIP client devices. It is not only an ideal alternative for ITSPs (IP telephony service providers) to deploy their VoIP services, it can also be the wireless handset, which is applied in corporate IP-PBX centric VoIP environment.

The Prestige 2000W is very easy to use and configure via an LCD screen menu or web browser. Meanwhile, with the smart auto-provisioning mechanism, ITSPs can easily deploy and manage the VoIP services. Easy-to-use and convenient, the Prestige 2000W delivers high quality voice functionality in a cost-effective way.