These things are well and good for when you're at your computer. But what about when you want to do other things while on the phone? Skype users are in luck, as there are a host of different hardware options available that integrate nicely with the program. There is not enough space here to review them, but our VoIP section features reviews of several Skype-ready devices, such as the Olympia / RTX Telecom DualPhone for Skype shown in Figure 2. Many of these devices even support Skype features such as the ability to view Contacts, SkypeIn, and SkypeOut.
Figure 2: DualPhone for Skype
Though there are no Gizmo-specific pieces of hardware available at this time, Gizmo has the ability to work with any of the currently-available SIP-based phones or adaptors, such as the D-Link 1402S SIP router shown in Figure 3. Note that if you already have a SIP-based ATA from another VoIP provider such as Vonage, you won't be able to use it with Gizmo. Virtually all VoIP providers lock hardware (even hardware you purchase yourself!) to their service, which makes them shiny plastic doorstops when you decide to switch providers.
Figure 3: D-Link 1402S SIP router
This means you'll need to buy unlocked hardware, which Robertson's SIPphone website conveniently sells. The FAQ section of the Gizmo forums provides several guides that detail how to get Gizmo to work with SIP-compatible hardware.