Hello,
I would love to setup and install A2billing + Asterisk Realtime on your Google VM server, my offer includes also hardening your server (firewall, fail2ban, htaccess etc).
- Ever since 2007 i've setup, secured, administered & maintained Asterisk servers with A2billing (freePBX too)
- I've developed and integrated a2billing on WHMCS and used it as client front end and billing system.
Looking forward working with you,
Mathew