smsDCDchange 1.3.6.1.4.1.8691.2.8.1.5.2.2.1.1.4

A change in the DCD (Data Carrier Detect) signal indicates that the modem connection status has changed. For example, if the DCD signal changes to low, it indicates that the connection line is down. When the DCD signal changes to low, the NPort 6000 series device server will automatically send a SMS alarm. Note: NPort 6150, 6250, 6250-S-SC, 6250-M-SC do not support write access.