Chapter 2 – AT Commands

Automated system that needs to periodically use the line while giving the voice user the highest priority

A common use for these features: An automated system that needs to periodically use the line while giving the voice user the highest priority. The automated system makes a connection when the line is free. It does this without disturbing the line if the line is in use. The automated system periodically retries the connection until the line is free.

Once free, it dials and makes its connection. If a voice user wishes to use the line while the modem is connected. the modem drops the line and gives it to the user. The modem will then try to regain control of the line by once again periodically retrying to establish a connection.

AT-STE=7

OK ATDT5551212

CONNECT

Sometime later, the user picks up phone

NO CARRIER ATS86?

25 OK

Delay 30 seconds ATDT5551212

LINE-IN-USE

Try again some time later user hangs up the phone

CONNECT

Test Command

Command: &Tn

V.54 Test Command

Values:

n = 0, 1, 8

Default:

None

 

Description:

The modem can perform selected test and diagnostic functions. A test can be run only

 

when the modem is in asynchronous operation in non-error-correction mode (normal or

 

direct mode). To terminate a test in progress, the escape sequence (+++) must be entered

 

first.

 

 

&T0

Abort. Stop any test in progress.

 

&T1

Start local analog loopback, V.54 Loop 3. If a connection exists when this

 

 

command is issued, the modem hangs up. A CONNECT message is displayed at

 

 

the start of the test.

 

&T8

Starts local analog loopback, V.54 Loop 3, with self-test. If a connection exists, the

 

 

modem hangs up before the test begins. When the test is terminated, the number

 

 

of detected errors is reported to the computer.

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

27

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Multi-Tech Systems MT5600BA-V92 manual Command &T n Test Command, No Carrier ATS86?
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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.

Another significant characteristic of the MT5600BA-V92 is its analog communication capabilities. The modem utilizes standard analog telephone lines for connectivity, allowing easy integration into existing telephony systems. This compatibility ensures that businesses can leverage their current infrastructure without needing substantial upgrades.

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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