Multi-Tech Systems MTCBA-G-F2 - Manual (Page 23)

Specifications
23
LED Indicators
TD. Transmit Data.
Lit when modem is transmitting data.
RD. Receive Data.
Lit when modem is receiving data.
CD. Carrier Detect. Lit when data connection has been
established.
LS. Line Status. Continuous “on” state indicates
that the wireless modem is not
registered on the network.
Flashing state indicates
registration on network.
Off state . Modem is off (not
ready) or in download mode.
TR. Terminal Ready. Commonly called “Data Terminal
Ready.” This is a readiness signal from
the PC.
PWR. Power. Indicates presence of DC power
when lit.