canreinvite=yes
context=from-pstn
dtmfmode=rfc2833
fromdomain=freedigits.net
fromuser=<your DID>
host=freedigits.net
insecure=invite,port
nat=yes
qualify=yes
secret=
type=friend
username=<your DID>



register string

<your DID>:<secret>@freedigits.net/<your DID>