Hi I’ve setup asterisk just to test it and I love it.
I got a problem with incoming calls from vioptalk.org when I dial my number from an external phone it just say’s (This number is not accepting calls at the moment).
I followed this instructions on there website is this a problem with my config or them? 
Thanks for the help just the last bit for me now lol
[general]
bandwidth=low
disallow=lpc10
jitterbuffer=no
forcejitterbuffer=no
autokill=yes
[guest]
type=user
context=default
callerid=“Guest IAX User”
[iaxtel]
type=user
context=default
auth=rsa
inkeys=iaxtel
[iaxfwd]
type=user
context=default
auth=rsa
inkeys=freeworlddialup
[demo]
type=peer
username=asterisk
secret=supersecret
host=216.207.245.47
[voiptalk]
type=peer
username=844106713
host=iax5.voiptalk.org
[05601050574]
type=friend
username=05601050574
context=05601050574