AT Command Set Summaries 79
Command Options Function & Description Ref.
&N67 V.34 16800
&N68 V.34 14400
&N69 V.34 12000
&N70 V.34 9600
&N71 V.34 7200
&N72 V.34 4800
&N73 V.34 2400
&Pn Pulse dial make/break ratio S23.2
&P0 * make / break, 39% / 61%
&P1 make / break, 33% / 67%
&Rn RTS (Request To Send) function
selection
S21.5
&R0 CTS tracks RTS, response delay is
set in S26
&R1 * Ignore RTS, assumes RTS always
ON
&Sn Data Set Ready (DSR) function
selection.
S21.3
&S0 * DSR overridden, DSR always ON.
&S1 DSR according to CCITT (ITU-
TSS). (See also S41.5, S44.4)
&Tn Modem testing. S16
&T0 Terminate test in progress.
&T1 Initiate Analog Loop-back (ALB)
test.
&T3 Initiate Local Digital Loop-back
(LDL) test
&T4 Grant Remote Digital Loop-back
request from remote modem
S14.1
&T5 Deny Remote Digital Loop-back
request from remote modem
S14.1
&T6 Initiate Remote Digital Loop-back
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