Asterisk/SBO Server with VPN [For VoIP Call Bandwidth Optimize]

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
We need a bandwidth compression system from Server A to Server B. Need 50 - 80 % bandwidth savings

Server A = Asterisk server
Server B = Asterisk Client server

we use SIP and H323 calls and need a SBO solution with VPN. need a client and server both. we are looking for something similer to the following

Skills required:
Asterisk PBX, Linux, PHP, Software Architecture, VoIP
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