Technical Reference
44
Front Panel Lights
Symbol
Meaning
Status
PWR ........ Power
The modem is turned on.
CD ........... Carrier Detect
ON if modem receives a valid data signal (carrier) from a remote
modem, indicating that data transmission is possible. Always ON if CD
override is ON (&C0).
RD ........... Received Data
Flashes when modem sends result codes or passes received data bits from
remote.
SD ........... Send Data
Flashes when computer sends a data bit to modem.