US Robotics COURIER - Front Panel Status Lights

COURIER HIGH SPEED MODEMS
FRONT PANEL STATUS LIGHTS
HS High Speed (above 2400 bps)
AA Auto Answer I Answer
CD Carrier Detect
OH
Off Hook
RD
Received Data
SD Send Data
TR Terminal Ready (DTR)
MR
Modem Ready /Test Mode
RS Request to Send
cs Clear to Send
SYN
Synchronous Mode
ARQ
Error control connection established
FLOW CONTROL BUFFERS
Transmit Buffer
Error control: 3.25k bytes
Non-Error control: 1.Sk bytes, 128-byte option
Receive Buffer: 2K bytes
COMMAND BUFFER
40 characters, exclusive of AT prefix, Carriage Return and spaces
TEST OPTIONS
Analog loopback with test pattern
Remote digital loopback
Digital loopback
Test pattern
Dial test
H-4 Technical Specifications
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