Making Free Phone Calls Using Asterisk and Google Voice

After installing the latest asterisk from source and configuring your dialplan extensions, you can use google voice to make and receive calls for free. Follow this guide to add google voice to your dialplan: Asterisk With Google Voice.
Then add the following to extensions.conf:
[outgoing-motif]
exten => _1XXXXXXXXXX,1,Dial(Motif/google/${EXTEN}@voice.google.com,,r)
[local]
include => incoming-motif
include => outgoing-motif
Now just dial 1+area_code+phone_number to dial a number or change:
exten => _1XXXXXXXXXX,1,Dial(Motif/google/${EXTEN}@voice.google.com,,r)
to
exten => _XXXXXXXXXX,1,Dial(Motif/google/${EXTEN}@voice.google.com,,r)
in order to just dial area_code+phone_number