Core issue
Cisco CallManager must have SNMP configured to send or receive traps, and to reply to queries by Network Management Systems.
Resolution
This is a list of Management Information Bases (MIB) supported by Cisco CallManager:
For the latest list of MIBs, refer to Cisco CallManager Supported MIBs.
To set the SNMP community string in Cisco CallManager, refer to Configuring SNMP Security section of Simple Network Management Protocol Configuration.
