Issues with some inbound calls

We are having some intermittent issues with inbound calls to the office.  The calls are going through, but about 20% of the time there is no audio (e.g., you won’t hear a ring).  We’ve identified the issue as a firewall configuration issue on a newly deployed firewall and are working to correct the issue now.  If you happen to call and are not able to get through, please either hang up and call back (the problem seems to be transient) or you can email support@cybertechcafe.net or open a support ticket directly at http://helpdesk.cybertechcafe.net .  I apologize for the inconvenience.