CUCM Version 11.x – DNS Unreachable After Upgrade
After upgrading your UC environment from 10.5 to 11.5 or 12 you may receive an error when logging into your…
Cisco Jabber – Cannot communicate with the server
The error message “cannot communicate with server” can be seen when logging into Cisco Jabber for a number of reasons.…
Common Causes of Poor VoIP Call Quality
If you are using a VoIP phone system, there is a good chance you have experienced poor call quality. The…
“Host Not Found” when Accessing the Corporate Directory
The “host not found” is an error message that can be found when pressing the Services or Directories buttons, or…
What is Cisco Expressway?
In this article, I will give you a quick general level overview of what is Cisco Expressway. I will cover…
Installation and Configuration of Cisco Expressway C & E
In this article we will break down the tasks required for the installation and configuration of both the Cisco Expressway…