US Robotics COURIER - Page 143

COURIER HIGH SPEED MODEMS
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&Rn Received Data hardware (RTS) flow control.
&RO Delay before modem responds to DTE's RTS signal with
CTS signal. Delay is set in Register S26.
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&Rl
Ignore RTS (Default).
&R2 Received data sent to DTE only when RTS is high; used
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only if DTE supports RTS signaling.
&Sn Data Set Ready (DSR) operations.
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&SO
DSR override, always ON (Default).
&Sl
Modem sends DTE a DSR signal when it senses a modem
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tone on the phone line.
&S2 On loss of carrier, modem sends DTE a pulsed DSR signal
with Clear to Send (CTS) following Carrier Detect (CD).
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&S3
This is the same as &S2, but without CTS following CD.
&Tn Modem testing.
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&TO
End test.
&Tl Initiate Analog Loopback (AL) testing.
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&T2 Reserved.
&T3
Initiate Local Digital Loopback (LDL) testing.
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&T4 Grant Remote Digital Loopback (RDL).
&TS Prohibit RDL.
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&T6 Initiate RDL testing.
&T7 Initiate RDL with self-test and error correction.
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&TS Initiate AL with self-test and error correction.
&W Write current settings to nonvolatile random access memory
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(NVRAM).
&Xn
Synchronous Timing Source. This specifies whether the modem
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or DTE generates the timing signals for the Transmit clock
during a synchronous call.
&XO Modem's Transmit clock is the source (Default).
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&Xl DTE is the source.
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C-10
Command Summary
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