D-Link KX-TDA100 - Manual (Page 223)

4.1 Troubleshooting
Installation Manual 223
The ALARM indicator on the
front of the cabinet turns on red. A major system error occurs in
the Hybrid IP-PBX. • See the error log using the KX-TDA
Maintenance Console (refer to "4.1.5
Troubleshooting by Error Log").
PROBLEM PROBABLE CAUSE SOLUTION