Free World Dialup IAX TRUNK setup for FreePBX - note you must first go to your Free World Dialup portal and check the box to enable IAX protocol or this WILL NOT work because FWD uses SIP only by default, and only allows IAX if you check the box in your account info.

Outgoing Dial Rules:
*+1800NXXXXXX
*+1822NXXXXXX
*+1833NXXXXXX
*+1844NXXXXXX
*+1855NXXXXXX
*+1866NXXXXXX
*+1877NXXXXXX
*+1888NXXXXXX

Trunk Name: fwd

PEER Details:
allow=ulaw
auth=md5
disallow=all
host=iax2.fwdnet.net
qualify=yes
secret=<your password>
type=peer
username=<your fwd number>

USER context: iaxfwd  (do NOT change this!!!)

USER details:

allow=ulaw
auth=rsa
context=from-trunk
disallow=all
inkeys=freeworlddialup
type=user

Register string: <your fwd number>:<your password>@iax2.fwdnet.net

Do NOT include the angle brackets where I show <your fwd number>, <your password>.