This is really driving me nuts. I am not an expert with Cisco IP Telephony.I have two sites connected via VPN (Cyberoam Firewalls) and there is communication between two sites. (ping is working)But the IP Phones can not call each other, Internal is w...

Please help me! Tomorrow I have to go to a client site and configure the firewall just to allow exchange server's traffic through it.I am CCIE Routing & Switching certified.  But does not have enough hands on with the ASA. Here is the running configu...