Westermo TD-22 - Manual (Page 10)

11 6177-2203
LED Status Indicators
PWR: Full Intensity The modem is functioning normally
Half intensity The modem is in test mode or remote
configuration mode
Occasional flashing with speaker click Power supply problem
1:6, on:off ratio RAM error
On/off with speaker click Modem unable to start
LINE LED lights up when the modem has the line
ANS LED flashes when a ring is detected on the line. The ANS indicator shines constantly
when answering an incoming call and remains lit thereafter to indicate the modem is
in autoanswer mode.
REL When the modem is in error correcting and compressing mode this LED is on.When
the modem is in direct or normal mode this LED remains off.
TD Transmitted Data: Shows data received from the local RS-232 port
RD Received Data: Shows data leaving the modem on the RS-232 port
RTS Request to Send signal from the DTE
DCD Data Carrier Detect modem signal
DSR Data Set Ready modem signal
Please also refer to AT&C, AT\N, AT&T, ATS0