Multi-Tech Systems MT2456SMI22 User Manual
Page 23
Chapter 4 - V.22bis Commands
Multi-Tech Systems, Inc. MT2456SMI-22 SocketModem Developer’s Guide
23
M Speaker
Control
This command selects when the speaker will be on or off. The parameter value, if valid, is written to S22 bits 2 and 3.
Syntax M<value>
Defined Values
<value> Decimal number corresponding to the selected option.
0
Speaker is always off.
1
Speaker is on during call establishment, but off when receiving carrier. (Default)
2
Speaker is always on.
3
Speaker is off when receiving carrier and during dialing, but on during answering.
Result Codes
OK <value> = 0 to 3
ERROR Otherwise
&G
Select Guard Tone
This command causes the modem to generate the guard tone selected by this command (DPSK modulation modes
only). The parameter value, if valid, is written to S23 bits 6 and 7.
Syntax &G<value>
Defined Values
<value> Decimal number corresponding to the selected option.
0
Disables guard tone. (Default)
1
Disables guard tone.
2
Selects 1800 Hz guard tone.
This command may not be permitted in some countries.
Result Codes
OK <value> = 0 to 2
ERROR Otherwise
&P
Select Pulse Dial Make/Break Ratio
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.
The default is country-dependent. The parameter value, if valid, is written to S28 bits 3 and 4.
Syntax &P<value>
Defined Values
<value> Decimal number corresponding to the selected option.
0
Selects 39%-61% make/break ratio at 10 pulses per second. (Default)
1
Selects 33%-67% make/break ratio at 10 pulses per second.
2
Selects 39%-61% make/break ratio at 20 pulses per second.
3
Selects 33%-67% make/break ratio at 20 pulses per second.
Result Codes
OK <value> = 0 to 3
ERROR Otherwise
&V
Display Current Configuration and Stored Profiles
This command reports the current (active) configuration.
Result Code
OK
Example:
AT&V
ACTIVE PROFILE:
B1 E1 L1 M1 N0 QO T V1 W0 X4 Y0 &C1 &D2 &G0 &J0 &K3 &Q5
&R1 &S0 &T5 &X0
S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002
S07:050 S08:002 S09:006
S10:014 S11:085 S12:050 S18:000 S25:005 S26:001 S36:007
S38:020 S46:138
S48:007 S95:000
OK