Guide on setting OnSIP trunking

Hi dear members,

I am trying to set sip trunking with onsip.com.

First, I created a dev account following the link in http://www.onsip.com/webrtc-sip-network
Logged in and created users on https://admin.onsip.com, and enabled one user to support onsip trunking.
After obtaining info about “OnSIP Trunking User”, followed the step-1 of the guide http://www.junctionnetworks.com/knowledgebase/onsip/onsip-trunking/asterisk-configuration-for-onsip-trunking to setup on Asterisk, but running “sip show registry” shows empty rows.

How can I setup this trunking using FreePBX interface, or should I change the “*custom.conf” files manually?
Any guide is appreciated.

Regards.

read more on the onsip page…

Thanks @brk. It was helpful.