0120 - ENUM SYSTEM is not available

This message indicates none of the ENUM cards is Active/IS-NR.

Example
12345678901234567890123456789012345678901234567890123456789012345678901234567890   
*C  0002.0120 *C ENUM SYSTEM             ENUM SYSTEM is not available

Alarm Level: Critical.

Recovery

Activate (Active/IS-NR) any one of the ENUM cards in the system.