The PBXMate software product from SoliCall is designed to improve voice quality by canceling echo, canceling noise and monitoring quality indicators. This article describes, in details, one option to integrating the PBXMate with FreeSWITCH in which both products are installed on the same Linux machine and a DNS is being used.

via PBXMate-FreeSWITCH-integration – FreeSWITCH Wiki.