Because a freespeech phone connects via broadband you can move your phone from place to place.
The convenience of connecting over broadband is fantastic. Here's a few scenarios to illustrate the portability of your phone.
You can travel abroad with a software phone installed on your laptop and make calls from your hotel. Your 'home' phone can still be plugged in because your VOIP line supports multiple phones.
When you're out and about, you can bring a wi-fi phone, and make VOIP calls from public hotspots.
When you move home or office you can bring your phone numbers with you, just plug your phone into the new broadband connection. No forms, no re-connection fees.
*Note: Some broadband providers may restrict the use of VOIP on their networks.