Chapter 6. Configuration

1 sec or EON

The ISU 128 assumes the dial string is fully entered if more than one second elapses since the last digit was entered, or the unit receives the EON com- mand.

2 sec or EON

The ISU 128 assumes the dial string is fully entered if more than two seconds elapse since the last digit was entered, or the unit receives the EON command.

5 sec or EON (default)

The ISU 128 assumes the dial string is fully entered if more than five seconds elapse since the last digit was entered, or the unit receives the EON command. This is the factory default setting.

10 sec or EON

The ISU 128 assumes the dial string is fully entered if more than 10 seconds elapse since the last digit was entered, or the unit receives the EON command.

20 sec or EON

The ISU 128 assumes the dial string is fully entered if more than 20 seconds elapse since the last digit was entered, or the unit receives the EON command.

Wait for EON

The ISU 128 assumes the dial string is fully entered only if the unit receives the EON command.

AT Commands

Configuring the ISU 128 for AT commands enables in-band dialing over the DTE interface using asynchronous AT commands. AT commands can be used to set up the ISU 128 as well as establish and end a call. Calls can be discon- nected from the front panel (as previously described) or from the far-end unit.

When AT commands are selected, the DTE port becomes dual purpose. First, while a call is not established, the port accepts AT commands. During this time, the Carrier Detect (CD) signal is inactive. Second, when a call is estab- lished, the port is used for data. This data mode is indicated by the CD signal active. See the appendix AT Commands for a listing of the supported AT com- mands and their functions. In addition to the front panel, the ISU 128 can be configured and controlled with in-band AT commands from an asynchronous DTE port.

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ISU 128 User Manual

61202.029L2-1

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ADTRAN ISU 128 user manual AT Commands, Sec or EON default, Wait for EON
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ISU 128 specifications

The ADTRAN ISU 128 is a versatile and robust integrated service unit designed for network access solutions, particularly within telecommunications and enterprise environments. This unit plays a critical role in enabling high-speed data transmission, supporting various voice, video, and data services over traditional and next-generation networks.

One of the noteworthy features of the ADTRAN ISU 128 is its ability to aggregate multiple digital circuits into a single access point. It supports T1, E1, and fractional T1/E1 interfaces, making it a flexible choice for customers with different bandwidth needs. The unit allows for seamless migration from legacy systems to modern broadband services, ensuring that businesses can scale their operations without significant infrastructure changes.

The ADTRAN ISU 128 also excels in its support for various protocols, including Frame Relay and ATM, providing the necessary flexibility to adapt to different network architectures. This adaptability is essential for businesses that rely on diverse communication platforms to maintain connectivity and operational efficiency.

Another significant aspect of the ISU 128 is its built-in features for diagnostics and monitoring. The unit includes comprehensive loopback and performance monitoring capabilities, which enable network administrators to troubleshoot potential issues proactively. This functionality ensures a reliable connection and minimizes downtime, which is critical for maintaining service-level agreements (SLAs).

In terms of user interface, the ADTRAN ISU 128 is designed with ease of use in mind. The unit can be configured and managed through a web-based graphical user interface, allowing for straightforward remote access to settings and performance metrics. This capability facilitates quick adjustments and upgrades, helping to streamline network management tasks.

The ISU 128 is also built with a strong emphasis on reliability and durability. It is housed in a compact, rack-mountable design, making it suitable for various deployment environments. These characteristics, combined with support for redundant power supplies, enhance the unit's reliability in critical operations.

Overall, the ADTRAN ISU 128 stands out as a powerful solution for organizations seeking to optimize their network access. With its advanced features, compatibility with multiple technologies, and emphasis on reliability, the ISU 128 is an ideal choice for those looking to enhance their communication infrastructure in a rapidly evolving digital landscape.
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