Trade in your old VoIP device for a credit against InPhonex phone service.  The service fee credit is based on the device you purchase:

To trade in your old device, place an order for an unlimited calling plan and device then complete the Trade-In Program Form and ship the form and your adaptor back to InPhonex.  Your service credit will be issued to your account when we receive the device and form.

How do I know which phone adaptor I need?

If your broadband modem has multiple Ethernet ports; or if you already have a separate router, you can use the single port PAP2T adaptor. 

If you do not have a separate router, or your broadband modem only has a single Ethernet port, you will need the Linksys 2102 adaptor.