Chapter 4—MODEM AT Commands, S-Registers, Result Codes

Note: Each character in a command counts toward the 40 character command line

maximum. Example: Q1 is a single command, but it counts as two characters in the command line.

Each command has a valid range of parameters; for example, &S can have only 0 or 1 as a parameter. Valid commands always generate an OK result code, and a few generate an additional response such as a list of parameters. An invalid command such as &S3, which has a parameter outside the valid range, generates an ERROR result code. Most commands have a default parameter that is enabled when the modem is turned on or reset with the ATZ or AT&F command. Factory defaults are stored in read- only memory (ROM) and cannot be changed. User-defined defaults can be stored in nonvolatile random-access memory (NVRAM) and can be changed or deleted at will.

Command Editing

Always begin a command with the letters AT. Enter the entire command string in upper or lower case, but do not mix cases within the command string. The AT command is not executed until you press ENTER. Use the BACKSPACE key to erase the previous command character. It will not erase the AT characters once they are typed. If your keyboard has no BACKSPACE key, use CTRL+H. (You can change the character recognized by the modem as BACKSPACE to any other ASCII character by changing register S5.)

Press CTRL+X to cancel an entire command that has been typed but not yet executed. This also clears the command buffer. The effect is the same as backspacing the command, only quicker.

The modem stores characters entered in a command in its command buffer until they are executed by pressing ENTER. The command buffer’s capacity is 40 characters. The attention characters (AT) do not count toward the 40-character command line maximum. You may use spaces for increased readability when typing a command. Spaces are not stored in the command buffer, and they do not count towards the 40-character command line maximum. Special characters, such as hyphens and parentheses, are not allowed.

If you exceed the 40-character limit or type invalid characters, the command buffer is automatically erased and an ERROR message displays. You should retype the command within the 40-character limit, using only the allowed characters.

The commands in this chapter are organized by function. Abbreviated commands are listed below by function along with a short description and page numbers that refer to a more detailed description, immediately following this list.

Topic

Command

Description

Page

Dialing Action

D

Dial

67

 

H

On-hook/off-hook

 

Dial Modifiers

L

Redial last number

67

 

P

Pulse dialing

 

 

T

Tone dialing

 

 

V

Speakerphone mode

 

 

W

Wait for new dial tone

 

 

,

Dialing pause

 

 

;

Return to command mode after dialing

 

 

!

Flash on-hook

 

 

$

Detect call card tone

 

Modem

MultiModemISI Hybrid Series, ISIHI-2S

65

Page 64 Page 66
Page 65
Image 65
Multi Tech Equipment ISIHI-2S manual Command Editing
Page 64 Page 66

ISIHI-2S specifications

The Multi Tech Equipment ISIHI-2S is a cutting-edge device designed to meet the demands of diverse industries, including manufacturing, construction, and telecommunications. This innovative piece of equipment is characterized by its versatile functionality, user-friendly interface, and robust construction, making it an ideal choice for professionals looking for reliability and efficiency.

One of the standout features of the ISIHI-2S is its advanced automation capabilities. Equipped with state-of-the-art sensors and control systems, this equipment can perform various tasks with minimal human intervention. This not only enhances productivity but also reduces the risk of errors associated with manual operation. The automation technology embedded in the ISIHI-2S allows for seamless integration into existing workflows, streamlining processes and significantly improving operational efficiency.

The ISIHI-2S also boasts a highly durable design. Constructed from high-quality materials, it is engineered to withstand harsh environments and heavy usage, ensuring longevity and reduced maintenance costs. The rugged build of the device is complemented by its lightweight nature, facilitating easy transportation and setup in various locations.

A user-friendly interface is another characteristic that sets the ISIHI-2S apart from its competitors. The intuitive control panel features a clear display, making it easy for operators to monitor performance and make adjustments as necessary. Furthermore, the device supports remote monitoring and control, allowing users to manage operations from a distance, which is particularly beneficial in large-scale projects.

In terms of technology, the ISIHI-2S incorporates advanced data analytics capabilities. Users can easily access and analyze performance data, enabling them to make informed decisions based on real-time metrics. This data-driven approach can lead to optimized operation strategies and more effective resource management.

Moreover, the versatility of the ISIHI-2S is evident in its ability to accommodate a range of attachments and accessories. This adaptability makes it suitable for various applications, from heavy lifting to intricate assembly tasks, catering to the unique needs of different industries.

In conclusion, the Multi Tech Equipment ISIHI-2S is a powerful tool that combines advanced technology, durability, and ease of use. Its automation features, robust design, user-friendly interface, and data analytics capabilities make it a preferred choice for professionals seeking reliable equipment to enhance their operational efficiency. Whether in a construction site or a manufacturing facility, the ISIHI-2S is set to revolutionize how tasks are approached and executed.
Top Page Image Contents