I am getting the following error in my event logs of our subscriber server running call manager4.2(3)sr1 and OS version 200.4.1. We are having problems calling internally to them and also 10 digit dialing them. Whenever we try to call them we get a busy signal. The problem is very intermittent, sometimes we are able to get through, other times we get a busy signal. Any ideas what this error message means?
Event Type: Error
Error: MtpNoMoreResourcesAvailable - No more MTP resources available.
App ID: Cisco CallManager
Cluster ID: StandAloneCluster
Explanation: MTP resource is not available.
Recommended Action: Install additional MTP or transcoder resources..