Communication and Control

Programmer’s Guide for Telnet and Web Browsers

Using the command/response table

The following are either Telnet (port 23) or Web browser (port 80) commands. There are some minor differences when you are implementing these commands via Telnet or via URL encoding using a Web browser. All commands listed below work using either connection method; but, due to some limitations of the Web browser, the encapsulation characters are modified to make sure that the Web browser properly handles them. All examples in the command/response table on

page 4-6 show the proper implementation in a Telnet or Web browser session.

NFor Web browsers: all non-alphanumeric characters must be represented as their hex equivalent, for example, %xx where xx equals the two character representation of the hex byte that needs to be sent (for example, a comma would be represented as %2C).

Telnet

Web Browser

Escape (Hex 1B)

W [must not be encoded]

Carriage Return (Hex 0D)

Pipe Character ()

 

[must not be encoded]

When these commands are used through a Web browser, the URL reference is used below to shorten the examples. This would in practice be the full URL of the control interface and Web page reference including all path information. For example, http://192.168.100.10/myform.htm.

To send any of the commands using a Web browser, you need to prefix them with the full URL followed by ?cmd=. See “URL Encoding”, later in this chapter.

NWith Telnet you can use either the “Escape” commands with the carriage return

or the “W” commands with the pipe () character. With the Web browser you are required to use the “W” commands and the pipe character.

The “Command/response table for Simple Instruction Set (SIS™) commands” later in this chapter lists the commands that the IPL T S interface recognizes as valid, the responses that are returned to the host, a description of the command’s function or the results of executing the command, and an example of each command in ASCII (Telnet) and URL Encoded (Web).

NUpper- and lowercase text can be used interchangeably except where noted.

Symbol definitions are shown below. An ASCII to HEX conversion table is also provided in figure 4-11 (below).

ASCII to HEX Conversion Table

•

Figure 4-11— ASCII-to-HEX conversion table

4-2 IPL T S Series • Communication and Control

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Extron electronic IPL T S manual Communication and Control, Programmer’s Guide for Telnet and Web Browsers
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IPL T S specifications

The Extron Electronics IPL T S is a powerful tool designed for seamless integration and control in AV applications. It provides a complete AV control solution that is highly intuitive and customizable. With its diverse set of features, the IPL T S caters to various environments, from educational institutions to corporate settings, delivering functionality and flexibility.

One of the standout features of the IPL T S is its user-friendly interface, which allows users to easily navigate through different control options. The device supports customizable touchscreen control, enabling users to personalize layouts according to their specific needs. This adaptability not only enhances user experience but also increases efficiency during presentations or meetings.

The technology behind the IPL T S includes advanced network control capabilities. It utilizes Extron’s well-rounded Global Viewer® technology, allowing users to manage and monitor their AV systems through a web-based application. This feature is crucial for IT managers or AV administrators who need real-time insight into the performance and status of their equipment, ensuring seamless operation.

Connectivity is another critical aspect of the IPL T S. It supports various control protocols, including IP, RS-232, and USB, making it compatible with a wide range of third-party devices. This compatibility not only simplifies integration but also offers users the flexibility to expand their AV systems as needed.

Moreover, the IPL T S is designed with robust security features, ensuring that control systems remain secure from unauthorized access. This is particularly important in corporate environments where sensitive information may be presented during meetings.

The device is built with reliability in mind, featuring Extron’s renowned quality assurance processes. It’s designed for uninterrupted performance, ensuring that users can rely on it during critical situations. Additionally, the IPL T S is backed by Extron’s extensive technical support, providing users with peace of mind.

In summary, the Extron IPL T S is an advanced, versatile AV control solution that greatly enhances the user experience in various settings. With its intuitive interface, extensive connectivity options, robust security features, and reliable performance, it stands out as an essential tool for modern AV applications, streamlining control and enabling effective communication.
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