CHAPTER 4: AT Commands, S-Registers, and Result Codes

Command:

DS=y

Dial Stored Telephone Number

Values:

 

n=0–1

Default:

 

none

Description:

 

Dial a number previously stored in directory

 

 

number y by the &Zy=x command.

 

 

Example: ATDS=1

Command:

En

Echo Command Mode Characters

Values:

 

n=0 or 1

Default:

 

1

Description:

E0

Do not echo keyboard input to the terminal.

 

E1

Do echo keyboard input to the terminal.

Command:

Fn

Echo Online Data Characters

Values:

 

n=1

Default:

 

1

Description:

F0

Enable online data character echo. (Not

 

 

supported.)

 

F1

Disable online data character echo (included for

 

 

backward compatibility with some software).

Command:

Hn

Hook Control

Values:

 

n=0 or 1

Default:

 

0

Description:

H0

Go on-hook (hang up).

 

H1

Go off-hook (make the phone line busy).

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 (for example,

 

 

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

 

 

(for example, 94).

 

I5

Display the board ID: software version, hardware

 

 

version, and country ID.

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Black Box MD403A user manual DS=y Dial Stored Telephone Number, Echo Command Mode Characters, Echo Online Data Characters

MD403A specifications

The Black Box MD403A is a powerful and versatile device widely recognized for its advanced technology and its ability to streamline data communication. Ideal for both personal and professional use, the MD403A is designed to cater to various environments, from small offices to larger enterprises.

One of the main features of the MD403A is its robust connectivity options. It supports multiple interfaces, including USB, HDMI, and Ethernet, allowing seamless integration with various devices such as computers, projectors, and IP networks. This flexibility makes it a popular choice for businesses that require reliable data transmission across different platforms.

The device is equipped with advanced signal processing capabilities that ensure high-quality data transfer. Utilizing cutting-edge technology, the MD403A minimizes signal loss, thereby enhancing performance and ensuring that the transmitted data remains intact. This feature is particularly crucial in scenarios where large amounts of data need to be transmitted quickly and without loss of quality.

Another significant characteristic of the Black Box MD403A is its user-friendly design. The interface is intuitive, making it easy for users of all technical abilities to navigate the system effortlessly. It typically comes with a straightforward setup process, minimizing downtime and allowing users to get up and running quickly.

The MD403A also boasts advanced security features. It employs multiple encryption protocols to safeguard sensitive information during transmission. With increased cybersecurity concerns, this feature is essential for businesses that handle confidential data, ensuring compliance with various regulatory requirements.

Additionally, the device supports various video resolutions, making it suitable for both standard and high-definition applications. This feature is particularly beneficial for users who want to deliver high-quality presentations or video content without compromising on clarity.

In terms of durability, the MD403A has a sturdy design that can withstand the rigors of daily use. Its compact form factor allows for easy portability, making it an ideal choice for professionals who are always on the move.

In summary, the Black Box MD403A combines advanced features, multiple connectivity options, robust security, and ease of use, making it an essential tool for modern communication needs. Its adaptability and performance make it a preferred choice for users seeking reliable data transfer solutions in diverse settings.