Thanks Adrian
I am just looking for a solution to hide PBX topology, main purpose for SBC is to hide topology and add extra layer of security.
I have tested feeesbc with vitalpbx and it works well.
However with fusion, it is not behaving as expected, fusion is domain based and causes issue with I use sip domain in feeesbc..
For example if I send a call from feeesbc to fusion using IP address(fusion tenent domain is IP address) works ok.
How would you recommend to handle multiple domain in fusion, fusion works well directly using multiple domain as call terminates into fusion.