U-90E
Data/Fax
Modem
AT Command Set Summary
5-11
Command
Options
Function & Description
Ref.
&N93
V.90
36000
&N94
V.90
34666
&N95
V.90
33333
&N96
V.90
32000
&N97
V.90
30666
&N98
V.90
29333
&N99
V.90
28000
&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 (RDL)
test
