I need someone good at configuring Asterisk and Lync for me to do the following:
1) All configuration on Asterisk has been done, however, I need you to check the security level of the server to make sure it is well protected - because it is public internet faced (with public IP)
2) I have configured a Lync VPS scenario with FrontEnd Pool and Lync Edge Server, but somehow it is not configured correctly because all VPS are with public IPs....
3) I need Asterisk Account can talk with Lync and vice versa.
4) If possible, please give a quote for setting up billing system with Asterisk so I can set up a voip outbouding call plans for VOIP businesses.