Beware, as you may get what you pay for. A short learning experience with “free after rebate” VOIP ATA devices, specifically the Linksys PAP2 unit, showed me that options are limited. These units are locked to a specific provider and cannot be changed. If you would like to switch services, you are the proud owner of a new paperweight. Many people are still trying to find ways of unlocking these units of course, but to date there is no solution.

If you would like to be able to configure your ATA and switch providers, find a Linksys PAP2-NA model, or just buy a Sipura SPA-2002, which is reportedly the core the PAP2 is using.