Multi-Tech Systems MT4X56USB User Manual
Page 42
MultiModemUSB User Guide
MT4X56USB
42
Command:
In
Information Request
Values:
n = 0–5, 9, 11
Default:
None
Description:
I0
Display V.90 protocol supported, modem model, and controller firmware version.
I1
Calculate and display ROM checksum (e.g., 12AB).
I2
Check ROM and verify the checksum, displaying OK or ERROR.
I3
Display V.90 protocol supported, modem model, and controller firmware version.
I4
Display firmware version for data pump (e.g., 94).
I5
Display the board ID: software version, hardware version, and country ID
I9
Display the country code (e.g., NA Ver. 1).
I11
Display diagnostic information for the last modem connection, such as DSP and firmware version,
link type, line speed, serial speed, type of error correction/data compression, number of past
retrains, etc.
Command:
Nn
Modulation Handshake
Values:
n = 0 or 1
Default:
1
Description:
N0
Modem performs handshake only at communication standard specified by S37 and the B
command.
N1
Modem begins handshake at communication standard specified by S37 and the B command.
During handshake, fallback to a lower speed can occur.
Command:
On
Return Online to Data Mode
Values:
0, 1, 3
Default:
None
Description:
O0
Exit online command mode and return to data mode (see +++AT<CR> escape sequence ).
O1
Issue a retrain and return to online data mode.
O3
Issue a rate renegotiation and return to data mode.
Command:
P
Pulse Dialing
Values:
P, T
Default:
T
Description:
Configures the modem for pulse (non-touch-tone) dialing. Dialed digits are pulsed until a T
command or dial modifier is received.
Command:
Qn
Result Codes Enable/Disable
Values:
n = 0 or 1
Default:
0
Description:
Q0
Enable result codes.
Q1
Disable result codes.
Q2
Returns an OK for backward compatibility with some software.
Command:
Sr=n
Set Register Value
Values:
r = S-register number; n varies
Default:
None
Description:
Set value of register Sr to value of n, where n is entered in decimal format. E.g., S0=1.
Command:
Sr?
Read Register Value
Values:
r = S-register number
Default:
None
Description:
Read value of register Sr and display it in 3-digit decimal form. E.g., S2? gives the response 043.