Chapter 2 – AT Commands

Command: %En Line Quality Monitor

Values:

n = 0, 1, or 2

Default:

2

 

Description:

Controls whether or not the modem will automatically monitor

 

a retrain (%E1) or fall back to a lower speed when line quality

 

forward to a faster speed when line quality is sufficient (%E2).

 

%E0

Disables line quality monitor and auto-retrain.

 

%E1

Enables line quality monitor and auto-retrain.

 

%E2

Enables line quality monitor and fallback/fall forward.

the line quality and request is insufficient and fall

Command:

%L Line Signal Level

Values:

None

Default:

None

Description:

% L Returns a value that indicates the received signal level in dBm. This value is a direct

 

indication (DAA-dependent) of the receive level at the MDP, not at the telephone line

 

connector. Examples: 009 = -9 dBm, 043 = -43 dBm, and so on.

Command:

%Q Line Signal Quality

Values:

None

Default:

None

Description:

% Q reports line signal quality (DAA-dependent) as a three-digit number. Returns the

 

higher order byte of the EQM value. Based on the EQM value, retrain or fallback/fall

 

forward may be initiated if enabled by %E1 or %E2.

Command:

%U PCM Code Selection

Values:

n = 0 or 1

Default:

0

 

Description:

Specifies the PCM code type for 56K modulation. Note, however, that the modem

 

automatically selects the code type if the server sends the proper ID.

 

%U0

Selects µ-Law coding—used in North America and Japan.

 

%U1

Selects A-Law coding—used outside North America and Japan.

 

Note: See also the +MS= command.

Command:

\An Maximum MNP Block Size

 

Note: For use with MT5600BA and MT5600BR only.

Values:

n= 0, 1, 2, or 3

Default:

1

 

Description:

\A0

64-character maximum block size.

 

\A1

128-character maximum block size.

 

\A2

192-character maximum block size.

 

\A3

256-character maximum block size.

Command:

\Bn Transmit Break

Values:

n = 0–9 in 100 ms units

Default:

3

Description:

In non-error-correction mode only, sends a break signal of the specified length to a remote

 

modem. Works in conjunction with the \K command.

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

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Multi-Tech Systems MT5600BA-V92 Command %En Line Quality Monitor, Command Line Signal Level, Command Line Signal Quality
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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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The MT5600BA-V92 integrates several features for improved functionality, including error correction and data compression technologies. These features enhance the reliability of data transmission by ensuring that lost or corrupted data packets are retransmitted, while compression reduces the amount of data sent over the line, further optimizing performance.

The modem is designed with user-friendliness in mind; it features a straightforward installation process and an intuitive configuration interface. Furthermore, it is compact and robust, making it suitable for diverse environments ranging from retail outlets to industrial applications.

The MT5600BA-V92 is also known for its durability and long life cycle, which is crucial for businesses that rely on continuous operations. Additionally, its ability to operate effectively in various conditions solidifies its position as a dependable communication solution.

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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