4 AT Commands, S-Registers, and Result Codes
49
Command: &RN Rate Negotiation
Values: n/a
Description: Forces the modem to perform a rate renegotia-
tion while on line. You must escape to command
mode to issue this command.
Command: &RP Immediate Line Probe
Values: n/a
Description: Initiates a retrain that makes the processor read
line probe information if %DP1 is selected. Valid
only when on line in V.34 mode.
Command: &RR Immediate Retrain
Values: n/a
Description: Forces the modem to perform an immediate
retrain while on line. You must escape to
command mode to issue this command.
Command: $R
n
Retransmit Count
Values:
n
= 0 or 1
Default: 0
Description: $R0 Disconnect after 50 retransmits of a data block.
$R1 Do not disconnect after 50 retransmits.
Command: S
r
=
n
Set Register Value
Values:
r
= S-register number;
n
varies
Default: None
Description: Set value of register S
r
to value of
n
, where
n
is
entered in decimal format.
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