This is copied verbatim from this blog post at sysadminman.net, except that I have changed the context statement to context=from-trunk, as required by FreePBX. The USER Context and USER Details in the trunk configuration are left blank. Be sure to substitute your user information and password in place of all instances of "1234567" and "XXXXXXXX".

Sipgatge trunk with Asterisk/FreePBX

9th November 2008, 01:00 pm

I’ve used Sipgate for the past few years with my Asterisk box and have been pretty impressed.

For anyone else looking to use Sipgate with Asterisk/FreePBX here is my trunk setup
Trunk Name: Sipgate

PEER Details:

username=1234567
type=peer
secret=XXXXXXXX
qualify=yes
nat=never
insecure=very
host=sipgate.co.uk
fromuser=1234567
fromdomain=mydomain.com
dtmfmode=rfc2833
disallow=all
context=from-trunk
canreinvite=yes
authuser=1234567
allow=ulaw

Register String:

1234567:XXXXXXXX@sipgate.co.uk/1234567

If you are using NAT between your Asterisk box and Sipgate you will need “canreinvite=no” and “nat=yes” or you will probably get one way audio only on your calls.