How to Use the Features

Special Instructions

Use the following special instructions for operating your voice terminal.

•The first time you use the voice feature procedures that appear in the next section Voice Feature Procedures, you will need to obtain the following information from your system manager:

➤Your system manager may assign features to your Feature Directory. To the right of each feature name in this section is a box. For each feature you have on your Feature Directory

and any other feature assigned to you, mark a ✔ in the blank box as a reminder. (Conference, Drop, Hold, Message, Mute, Select Ring, Test, and Transfer are already marked for you.)

➤Any feature not listed on your Feature Directory can be activated or canceled by dialing a 1-, 2-, or 3-digit feature access code. Ask your system manager for the feature access codes for the features you need, and then write the assigned code number in the provided blanks in each feature procedure.

•To operate a feature, you must have the handset off-hook (removed from the cradle of the voice terminal) unless otherwise noted.

•If you receive an intercept tone (high-pitched, alternating high and low tone) while attempting to operate any feature, you have taken too much time to complete a procedural step or have made a dialing error. Hang up, get dial tone, and begin again at Step 1.

•System 75 is available in more than one version. Some features, such as Abbreviated Dialing, Call Forwarding All Calls, Last Number Dialed, and Priority Calling operate slightly differently with Version 1, and possibly Version 2, than they do with later versions. If you are using Version 1 or 2 of the System 75 software, you should check the section titled Troubleshooting later in this guide before you use any of these four features.

Conventions Used in The Following Procedures

Feature and

Feature xxxxx

Each of these boxes represents a button that has a feature assigned to it. The button is labeled with the feature name, sometimes followed by an extension number (shown as xxxxx) or a person’s name.

[feedback tones]

The tone that appears in brackets after a step, such as [dial

 

tone], indicates what you should hear from your handset (or

 

speaker) after successfully performing that step.

 

For a list of tones and their meaning, see the section titled Tones

 

and Their Meaning.

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Lucent Technologies 8403 manual How to Use the Features, Their Meaning
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8403 specifications

Lucent Technologies 8403 is a significant telecommunications switch that was primarily utilized in the late 1990s and early 2000s. It played a crucial role in the evolution of telecommunication systems, reflecting the rapid advancements in technology during that period. The 8403, part of the Lucent 8400 series, was known for integrating various features and capabilities that were vital for modern telecommunication networks.

One of the standout features of the Lucent 8403 was its advanced switching technology. Utilizing time division switching and digital signal processing, the device was capable of handling a large volume of calls simultaneously while maintaining high-quality voice transmission. This technology enabled efficient routing of calls and minimized the risk of dropped connections, which was a concern in earlier analog systems.

Another significant characteristic of the Lucent 8403 was its support for a wide range of telecommunications protocols. The switch was designed to facilitate both traditional telephone services and emerging digital services, including ISDN and Frame Relay. By accommodating both circuit-switched and packet-switched networks, the 8403 provided flexibility that major telecommunication providers demanded during that transition period.

The 8403 also featured enhanced signaling options, such as Common Channel Signaling System No. 7 (CCSS7), which allowed for improved call setup, control, and management. This feature significantly reduced the time it took to establish a call, thereby improving overall network efficiency.

Scalability was another key characteristic of the Lucent 8403. As telecommunication needs grew, service providers could expand their systems by integrating additional hardware and modules without requiring a complete overhaul of the existing infrastructure. This adaptability was crucial as demand for services fluctuated and as new technologies emerged.

Moreover, the switch was designed with reliability and redundancy features in mind. Its architecture included failover mechanisms that ensured continued operation even in the event of hardware failures. This reliability was essential for operators that required uninterrupted service delivery.

Lastly, the user-friendly interface of the Lucent 8403 provided simplified management and monitoring capabilities. System administrators could easily access performance metrics, troubleshoot issues, and manage configurations, facilitating more efficient maintenance and operations.

In conclusion, the Lucent Technologies 8403 played a transformative role in telecommunications infrastructure during its era. Its blend of advanced switching technology, protocol support, scalability, reliability, and user-friendly management tools made it a foundational component in the evolution of modern telecom networks. As a result, it served as a significant stepping stone toward the complex, integrated systems we see today.
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