Information Technology Reference
In-Depth Information
&Qn
Asynchronous/synchronous mode selection
&Q0
Set direct asynchronous operation
&Q1
Set synchronous operation with asynchronous off-line
&Q2
Set synchronous connect mode with asynchronous off-line
&Q3
Set synchronous connect mode
&Q5
Modem negotiation for error-corrected link
&Q6
Set asynchronous operation in normal mode
&Rn
RTS/CTS option
&R0
In synchronous mode, CTS changes with RTS (the delay is defined by
the S26 register)
&R1
In synchronous mode, CTS is always ON
&Sn
DSR option
&S0
DSR is always ON (default)
&S1
DSR is active after the answer tone has been detected
&Tn
Testing and diagnostics
&T0
Terminates any current test
&T1
Local analogue loopback test
&T2
Local digital loopback test
View configuration profiles
&V
&Wn
Store the current configuration in non-volatile RAM
&W0
Writes current settings to profile 0 in nonvolatile RAM
&W1
Writes current settings to profile 1 in nonvolatile RAM
&Xn
Clock source selection
&X0
Selects internal timing, where the modem uses its own clock for
transmitted data
&X1
Selects external timing, where the modem gets its timing from the DTE
(computer)
&X2
Selects slave receive timing, where the modem gets its timing from the
received signal
&Yn
Select default profile
&Y0
Use profile 0 on power-up (default)
&Y1
Use profile 1 on power-up
&Zn
Store telephone numbers
&Z0
Store telephone number 1
&Z1
Store telephone number 2
&Z2
Store telephone number 3
&Z3
Store telephone number 4
\An
Maximum MNP block size
\A0
64 characters
\A1 128 characters
\A2
192 characters
\A3 256 characters
\Bn
Transmit break
\B1
Break length 100 ms
\B2 Break length 200 ms
\B3
Break length 300 ms (Default)
and so on
.
\Gn
Modem/modem flow control
\G0
Disable (Default)
\G1 Enable
\Jn
Enable/disable DTE auto rate adjustment
\J0
Disable
\J1 Enable
\Kn
Break control
\K0
Enter on-line command mode with no break signal
\K1
Clear data buffers and send a break to the remote modem
\K3
Send a break to the remote modem immediately
\K5
Send a break to the remote modem with transmitted data
\Ln
MNP block transfer control
\L0
Use stream mode for MNP connection (default)
\L1
Use interactive MNP block mode.
C.2 Result codes
After the modem has received an AT command it responds with a return code. A complete set of return codes are
given in Table C.1.
