Question
Answer
Status LEDs for both U.S. Robotics and SECURCOMM DC336 modems are indicated below. Information for both the host and panel-end modems is listed for each possible state with descriptions.
U.S. Robotics
AA - Auto Answer
CD - Carrier Detect
RD - Receive Data
SD - Send Data
TR - Terminal Ready
CS - Clear to Send
ARQ/FAX - Error Control
DISCONNECTED STATE (COMMUNICATION SERVER OFF):
HOST: CS
PANEL: TR, CS
DISCONNECTED STATE (COMMUNICATION SERVER ON):
HOST: TR, CS
PANEL: TR, CS
DIALING / RINGING STATE:
HOST: TR, CS
PANEL: AA (Flashes on Ring), TR, CS
ANSWERING / CONNECTING STATE:
HOST: TR, CS
PANEL: AA, TR, CS
CONNECTED STATE:
HOST: AA, CD, RD (Flashing), SD (Flashing), TR, CS
PANEL: AA, CD, RD (Flashing), SD (Flashing), TR, CS
SECURCOMM DC336
MR - Modem Ready
TR - Terminal Ready
SD - Send Data
RD - Receive Data
OH - Off Hook
CD - Carrier Detect
AA - Auto Answer
HS - High Speed
DISCONNECTED STATE (COMMUNICATION SERVER OFF):
HOST: MR, HS
PANEL: MR, TR, HS
DISCONNECTED STATE (COMMUNICATION SERVER ON):
HOST: MR, TR, HS
PANEL: MR, TR, HS
DIALING / RINGING STATE:
HOST: MR, TR, OH, HS
PANEL: MR, AA (Flashes on Ring), HS
ANSWERING / CONNECTING STATE:
HOST: MR, TR, OH, HS
PANEL: MR, TR, OH, HS
CONNECTED STATE:
HOST: MR, TR, SD (Flashing), RD (Flashing), OH, CD, HS
PANEL: MR, TR, SD (Flashing), RD (Flashing), OH, CD, HS