Chapter 2 – AT Commands

Command:

Qn Result Codes Enable/Disable

Values:

n = 0 or 1

Default:

0

 

Description:

Q0

Enables result codes.

 

Q1

Disables result codes

Command:

Sr

Select Register

Values:

 

r is the S-Register number

Default:

 

None

Description:

 

Selects register Sr as the last register accessed; e.g., S0. The command AT? can then be

 

 

used to read the register, and the command AT=n can then be used to set the register to

 

 

value n.

Command:

Sr=n Set Register Value

Values:

r is the S-Register number; n varies

Default:

None

Description:

Sets value of register Sr to n, where n is entered in decimal format; e.g., S0=1.

 

If the short form AT=n is used, the value is written to the last accessed S-Register.

Command:

Sr? Read Register Value

Values:

r is the S-Register number

Default:

None

Description:

Reads value of register Sr and displays it in 3-digit decimal format. S2? gives the

 

response 043. If the short form AT? is used, the last accessed S-Register is read.

Command:

T

Tone Dialing

Values:

 

P,T

Default:

 

T

Description:

 

Forces DTMF (touch-tone) dialing until a P command or P dial modifier is received.

Command:

Vn Result Code Format

Values:

n = 0 or 1

Default:

1

 

Description:

V0

Displays result codes as digits (terse response).

 

V1

Displays result codes as words (verbose response)

Command:

Wn Connect Message Control

Values:

n = 0, 1, or2

Default:

0

 

Description:

W0

The CONNECT result code reports the serial port speed only.

 

W1

The CONNECT result code reports the line speed, the error correction protocol,

 

 

and the serial port speed, respectively.

 

W2

The CONNECT result code reports the line speed only.

 

Note: See also the \V command

Command:

Xn Result Code Selection

Values:

n = 0–4

Default:

Country Dependent

Description:

Selects the result message subset that the modem will use to inform the computer of the

 

results of commands.

 

X0

Sends OK, CONNECT, RING, NO CARRIER, ERROR and NO ANSWER; does not

 

 

look for dial tone or busy signal.

 

X1

Sends X0 messages and connect speed; doesn’t look for dial tone or busy signal.

 

X2

Sends X1 messages with NO DIALTONE; does not look for busy signal.

 

X3

Sends X1 messages with BUSY; does not look for dial tone.

 

X4

Sends all messages, including NO DIALTONE and BUSY.

 

Note: In fax mode, the only message sent to indicate a connection is CONNECT without

 

 

a speed indication. See also the \V command.

Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273G)

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Multi-Tech Systems MT5600BA-V92 Command Result Codes Enable/Disable, Command ? Read Register Value, Command Tone Dialing
Page 6 Page 8

MT5600BA-V92 specifications

Multi-Tech Systems MT5600BA-V92 is a versatile communication device designed for efficient data transmission over telephone lines. It is highly regarded for its reliability and performance in various applications, including point-of-sale transactions, remote monitoring, and data acquisition. One of the key features of the MT5600BA-V92 is its ability to operate at data rates of up to 56 Kbps. This high-speed modem ensures rapid data transfer, making it suitable for businesses that require quick and efficient communication.

The device supports V.92 technology, which enhances the performance of dial-up connections. V.92 provides features like cheaper call setup times, reduced latency, and improved upload speeds compared to older standards. This makes the MT5600BA-V92 an ideal choice for users who need enhanced data performance without investing in more complex networking infrastructure.

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In summary, the Multi-Tech Systems MT5600BA-V92 is an advanced modem that combines high-speed data transmission, analog compatibility, and robust error correction features. Its reliable performance and user-friendly design make it an excellent choice for businesses looking to enhance their communication capabilities while utilizing existing telephone infrastructure.
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