E AT Command Summary
CommPlete Communications Server 81
Command Values Description
&Rnn = 0, 1, or 2 Clear to Send Control
&R0 Let CTS state follow RTS state when online.
*** &R1 Force CTS high (on).
&R2 Let CTS drop on disconnect for time set by S24,
then go high again.
&RAnn = 0 or 1 Asymmetric Bit Rate
*** &RA0 Enable asymmetric bit rate operation.
&RA1Disable asymmetric bit rate operation.
&RDnn = 0 or 1 Square Wave Ring Detect
&RD0Full wave ring detect only.
*** &RD1 Full wave and square wave ring detect.
&RFnn = 0 or 1 CTS/RTS Interaction Control
&RF0 Let CTS follow RTS.
*** &RF1 Let CTS act independently.
&RN n/a Rate Renegotiation
Forces the modem to renegotiate the data rate.
&RP n/a Immediate Line Probe
Initiates a retrain that makes the modem read line
probe information if %DP1 is selected. Valid only
when online in V.34 mode.
&RR n/a Retrain
Initiates an immediate retrain without a line probe
reading.
$Rnn = 0 or 1 Retransmit Count
*** $R0 Disconnect after 12 retransmits.
$R1 Do not disconnect after 12 retransmits.
Sr=nr = 0–11, 13,
24, 25, 30,
32, 34, 36,
37, 43, 48, or
94; n varies
Set Register Value
Set value of S-register r to value of n, where n is
entered in decimal format.
Sr?r = 0–11, 13,
24, 25, 30,
32, 34, 36,
37, 43, 48, or
94
Read Register Value
Read value of S-register r and display value in 3-digit
decimal form.
&Snn = 0, 1, or 2 Data Set Ready Control
&S0 Force DSR high (on).
*** &S1 Let DSR follow CD.
&S2 DSR drops on disconnect for time set by S24,
then goes high again.