In FreePBX web portal, Add a trunk,
[didforsale]
type=peer
host=[IP ADDRESS OF OUR SERVER]
nat=no
canreinvite=yes
disallow=all
allow=ulaw
allow=alaw
dtmfmode=rfc2833
insecure=very
context=from-didforsale
Please note: You can find the IP for DIDForSale upon logging into your account. We send the calls to your public IP address and do not require any username, password or registration to our server.
In extension.conf, add these lines. //This will remove + from the callerid, which many people can not handle.
[from-didforsale]
exten => _X.,1,Set(CALLERID(num)=${CALLERID(num):1})
include => from-trunk
Now your system will be able to accept calls from didforsale.com. Now you can do anything you want with the DIDs.
Hope this helps, feel free to comment in this if you want to see any additional information of help.
Thank you,
-Jai