Front-Of-The-Case Lights (External Faxmodems) - 3Com 005699-00 Manual

Front-of-the-Case Lights (External Faxmodems)

Symbol Meaning
AA .......... Auto Answer
CD........... Carrier Detect
RD........... Received Data
SD ........... Send Data
TR ........... Data Terminal Ready
CS ........... Clear to Send
ARQ/....... Error Control/
FAX ........ Fax Operations
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T R
ECHNICAL EFERENCE
Status
Answer mode: ON when register S0 is set to 1 or higher (Auto Answer),
and when answering a call; OFF when modem originates a call. Light
flashes when there is an incoming call.
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).
Flashes when modem sends result codes or passes received data bits from
remote.
Flashes when computer sends a data bit to modem.
ON if modem receives a DTR signal from computer. Always ON (modem
ignores DTR) if the DTR override is ON (&D0).
ON until modem lowers CTS when Transmit Data hardware flow control
is enabled (&H1, &H3).
Data Mode: Automatic Repeat Request. ON if modem is set to &M4 or
&M5 and successfully establishes an error control connection. Flashes
when modem retransmits data to remote modem. Fax Mode: flashes to
indicate fax mode.