Multi-Tech Systems MTS2SA-T-R ユーザーズマニュアル
Chapter 10
− Modem Mode AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. MultiConnect Serial-to-Serial Adapter User Guide (S000354A)
93
Command:
&Fn
Restore Factory Configuration (Profile)
Values:
n
= 0
Default: None
Description:
Description:
The modem loads the factory default configuration (profile). The factory defaults are
identified for each command and in the S-Register descriptions. A configuration (profile)
consists of a subset of S-Registers.
consists of a subset of S-Registers.
&F0 Restore factory configuration 0.
&F1 Restore factory configuration 1. (Not available in V.22bis).
Command:
&Gn
Select Guard Tone
Values:
n
= 0, 1, or 2
Default: 0
Description:
Description:
This command causes the modem to generate the guard tone selected by this command
(DPSK modulation modes only). This command may not be permitted in some countries.
(DPSK modulation modes only). This command may not be permitted in some countries.
&G0 Disables guard tone.
&G1 Disables guard tone.
&G2 Set guard tone to 1800 Hz.
Command:
&Kn Flow
Control
Values: n = 0, 3, 4, 5
Defaults: 3
Description:
Defaults: 3
Description:
This command defines the DTE/DCE (terminal/modem) flow control mechanism. The
parameter value, if valid, is written to S39 bits 0, 1, and 2.
parameter value, if valid, is written to S39 bits 0, 1, and 2.
&K0 Disables flow control.
&K3 Enables RTS/ CTS flow control.
&K4 Enables XON/XOFF flow control.
&K5 Enables transparent XON/XOFF flow control.
Command:
&Pn
Select Pulse Dial Make/Break Ratio
Values:
n
= 0, 1, 2, 3
Default: Country-Dependent
Description:
This command determines the make/break ratio used during pulse dialing. It is only
effective if the appropriate bit to enable this command is set through the country
profile.
effective if the appropriate bit to enable this command is set through the country
profile.
The default is country-dependent. The parameter value, if valid, is written to
S28 bits 3 and 4.
&P0 Selects 39%-61% make/break ratio at 10 pulses per second. (Default in V.22bis))
&P1 Selects 33%-67% make/break ratio at 10 pulses per second.
&P2 Selects 39%-61% make/break ratio at 20 pulses per second.
&P3 Selects 33%-67% make/break ratio at 20 pulses per second.
Command:
&R
RTS/CTS Option
Values:
0,
1
Default:
None
Description:
This selects how the modem controls CTS. The CTS operation is modified if hardware flow
control is selected (see &K command). The parameter value, if valid, is written to S21 bit 2.
control is selected (see &K command). The parameter value, if valid, is written to S21 bit 2.
&R0 In sync mode, CTS tracks the state of RTS; the RTS-to-CTS delay is defined by S26.
In async mode, CTS is normally ON and will turn OFF only if required by flow control.
&R1 In sync mode, CTS is always ON (RTS transitions are ignored), tracks the state of
RTS; In async mode, CTS is normally ON and will turn OFF only if required by flow
control.
control.
Command:
&Sn DSR
Override
(&S has no functionality in V.22bis)
Values:
n
= 0, 1
Default: 0
Description:
Description:
Selects how the modem will control DSR. The parameter value, if valid, is written to
S21 bit 6.
&S0 DSR is always high (ON).
&S1 DSR goes high (ON) only during a connection.