asterisk users - Oct 2012 - asterisk for small home phone system

My wife and I have a home telephone/answering machine.  We've decided that
having voicemail stuck in the machine and waiting for us to return home is not
working for us any longer.  We'd like for calls coming into our home to be
routed to our cell phones.  It seems to me that Asterisk might be the tool to do
this.  I'm thinking that if I had a device like the Linksys SPA3102 on my
home network I could run Asterisk on my Linux server and this could route calls
via SIP to our cell phones, which would be running a SIP client of some kind.

 So my questions for you are:

 - Is the Linksys SPA3102 a good piece of hardware for this type of setup or is
there something cheaper?  Perhaps a card that can go right into the Linux box?
 - Would we configure our SIP clients on our iphones to login directly to
Asterisk running on my home Linux box?  I have 18MB/2.5MB internet service with
a static IP so this wouldn't be a problem.

Thanks,
 -M@

On Thu, Oct 25, 2012 at 11:09:01AM -0700, Matthew Hixson
wrote:
> - Is the Linksys SPA3102 a good piece of hardware for this type of setup or
is there something cheaper?  Perhaps a card that can go right into the Linux
box?
I'm using an OpenVox A400 (with an FXO module), which Asterisk can
drive directly.
> - Would we configure our SIP clients on our iphones to login directly to
Asterisk running on my home Linux box?  I have 18MB/2.5MB internet service with
a static IP so this wouldn't be a problem.
That would be the simplest approach (modulo firewalls). If you already
have another SIP provider, you could configure your home asterisk to
forward calls to that...

R