41 EKI-1521/1522/1524 User Manual
Chapter 3 Configuration
DCD Change
The DCD (Data Carrier Detect) signal has changed, also indicating that the modem
connection status has changed. For example, a DCD change to high also means
“Connected” between local modem and remote modem. If the DCD signal changes to
low, it also means that the connection line is down. When the DCD signal changes,
the EKI-1500 series will send an e-mail, or send a SNMP trap.
DSR Change
The DSR (Data Set Ready) signal has changed, also indicating that the data commu-
nication equipment’s power is off. For example, a DSR change to high also means
that the DCE is powered ON. If the DSR signal changes to low, it also means that the
DCE is powered off. When the DSR signal changes, the EKI-1500 series will send an
e-mail, or send a SNMP trap.
3.8 Port Monitor
Configuration utility provides an excellent function that allows monitoring the serial
ports’ status. It will present each serial port’s operation mode and status. The IP
address of the host PC which is communicating with serial port will be list on the right
window. Click “Refresh” button, the status will be refresh once. It will be auto refresh
after click “Auto Refresh” and the time duration is depending on the setting (the
default value is 1000ms).
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