Chapter 1 – AT Commands, S-Registers and Result Codes

Command:

In

Information Request

Values:

 

n = 0–5, 9, 11

Default:

 

None

Description:

 

I0

Display default speed 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 default speed 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:

Mn

Monitor Speaker Mode

Values:

 

n = 0, 1, 2, or 3

Default:

 

1

 

Description:

 

M0

Speaker always off.

 

 

M1

Speaker on until carrier signal detected.

 

 

M2

Speaker always on when modem is off-hook.

 

 

M3

Speaker on until carrier is detected, except while dialing.

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 renegotiations 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.

Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C)

10

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Multi-Tech Systems MT5634SMI V.92 Command Information Request, Command Monitor Speaker Mode, Command Modulation Handshake
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MT5634SMI V.34, MT5634SMI V.92 specifications

The Multi-Tech Systems MT5634SMI is a versatile and robust external modem designed to cater to a variety of communication needs. As a V.92/V.34 standard modem, it provides reliable and efficient data connections for both home and business users. Its unique blend of features and technologies makes it an excellent choice for users looking to achieve optimal performance in their data transmission.

One of the standout features of the MT5634SMI is its support for the V.92 standard, which offers faster throughput and enhanced performance compared to prior standards. With V.92, users can experience download speeds of up to 56 Kbps and upload speeds reaching 48 Kbps. This improved speed is particularly beneficial for users who frequently download large files or engage in data-intensive activities.

The modem also includes the V.34 technology, which further enhances its capabilities by improving connection reliability and data integrity over various line conditions. Utilizing advanced error correction and data compression techniques, the V.34 modem ensures a smoother and faster communication experience. This makes it ideal for users in areas with fluctuating line quality or those who require stable connections for online conferencing or telecommuting.

In terms of form factor, the MT5634SMI is an external modem, which allows for easy installation and portability. Its compact design ensures it can fit into any workspace without taking up much room or adding clutter. The modem connects to computers via standard serial ports, making it compatible with a wide range of devices, both modern and legacy.

Additional features of the MT5634SMI include built-in diagnostics to assist troubleshooting and ensure smooth operation. It supports multiple operating environments, catering to users operating on various systems, providing versatility for both home and office settings. The modem's compatibility with popular operating systems guarantees that users can easily integrate it into their existing setups without a hassle.

In conclusion, the Multi-Tech Systems MT5634SMI V.92/V.34 modem stands out as a reliable choice for anyone needing high-speed internet connectivity. With its strong feature set, enhanced technologies, and user-friendly design, it is an asset for enhancing communication and data transfer capabilities. Whether for personal use or business applications, the MT5634SMI delivers performance and reliability, making it a valuable addition to any technology arsenal.
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