Cisco TMS relies on feedback sent from systems and verifies the endpoint connecting to it based on serial number, MAC address and IP address. Most Cisco TelePresence and third party systems send this feedback using anonymous HTTP or HTTPS connections which can be blocked if there is a web proxy on the network that requires authentication. In this case, you should speak to the administrator of the proxy about adding an exception for traffic destined for Cisco TMS.
Firewalls can also block feedback to Cisco TMS if they block new connections from the system to Cisco TMS. The Cisco TMS Support documentation outlines which ports and protocols must be available for each system type.
The last common connection failure occurs when an administrator manually modifies the IIS configuration after Cisco TMS has been installed and disables anonymous access to the web directories. Anonymous access is only open to certain portions of Cisco TMS and must not be disabled because systems do not use usernames and passwords when they send feedback. To correct any IIS misconfiguration, uninstall Cisco TMS and reinstall it. No data will be lost as long as the database is left intact: the installer will rebuild the web site properties correctly.
| September 7th, 2011 | TAA_KB_236 |