Chapter 2 – AT Commands

<orig_fbk> Decimal number which specifies the acceptable fallback mode of operation when the modem is operating as the originator.

0LAPM, MNP, or Normal Mode error control optional. Default

1LAPM, MNP, or Direct Mode error control optional.

2LAPM or MNP error control required; disconnect if error control is not established.

3LAPM error control required; disconnect if error control is not established.

4MNP error control required; disconnect if error control is not established. <ans_fbk> Decimal number which specifies the acceptable fallback mode of operation

when the modem is operating as the answerer.

0Direct Mode.

1Error control disabled, use Normal Mode.

2LAPM, MNP, or Normal Mode error control optional. Default

3LAPM, MNP, or Direct Mode error control optional.

4LAPM or MNP error control required; disconnect if error control is not established.

5LAPM error control required; disconnect if error control is not established.

6MNP error control required; disconnect if error control is not established.

Report Commands: +ES? Reports current or selected values.

+ES=? Reports supported range of parameter values.

Command: +ESR

Selective Reject

Description:

This extended-format numeric parameter controls the use of the selective reject (SREJ)

 

option in V.42.

 

Syntax: +ESR=[<value>]

 

Decimal number 0 specifying that SREJ is not used.

Report Commands:

+ESR?

Reports current or selected values.

 

+ESR=?

Reports supported range of parameter values.

Command: +ETBM

Call Termination Buffer Management

Description:

This extended-format compound parameter controls the handling of data remaining in

 

modem buffers upon call termination. It accepts three numeric subparameters:

 

Syntax: +ETBM=[<pending_TD>[,<pending_RD>[,<timer>]]]

Values:

<pending_TD> Decimal number 0 specifying that disconnect will occur immediately and all

 

buffered transmit data will be discarded when the local DTE requests call disconnection.

 

<pending_RD> Decimal number 0 specifying that disconnect will occur immediately and

 

all buffered receive data will be discarded when the local DTE requests call disconnection.

 

<timer> Decimal number 0 specifying that the modem will not attempt to deliver the

 

buffered data before abandoning the attempt and discarding remaining data.

Report Commands:

+ETBM? Reports current or selected values.

 

+ETBM=? Reports supported range of parameter values.

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

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Multi-Tech Systems MT5600BA-V92 Command +ESR Selective Reject, Command +ETBM Call Termination Buffer Management, +Esr?
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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.

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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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