VOIP Gateway The Linksys PAP2 Phone Adapter is a consumer based VOIP Gateway device that enables customer to use their existing home phone to make and receive calls. How it works: Simply attach the phone lines from your regular phone to the Linksys PAP2 Phone Adapter. The adapter will use the VOIP technology that routes your call to its final destination. The way you pick up calls or make calls, will remain exactly the same as before. For example: A worker based in Los Angeles frequently make calls to Hong Kong through long distance. By using this device stored with a HK phone number assigned by us, the worker can make and receive calls using a HK phone number in Los Angeles. Saving money on long distance charges!