[asterisk-users] best softphone for 2012?

[Gilles]

On Sat, 07 Jan 2012 09:27:29 -0500, sean darcy <seandarcy2 at gmail.com>
wrote:
>But what really made us choose linphone was you use it on android/iphone.
>
>That has been a huge plus. As a bonus, you can use any degegistered 
>smartphone - that is, one not hooked up to the cellular network,only 
>wireless - as a softphone.

I guess you meant "de-registered smartphone" : what does it mean?