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ADTRAN ISU 128 user manual Isdn Overview, Adtran ISU

Models: ISU 128

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Chapter 1 Understanding ISDN and the ISU 128

ISDN OVERVIEW

The Integrated Services Digital Network (ISDN) is a public or private switched digital network. ISDN is an international standard for digital communica- tions, allowing a full range of enhanced services supporting voice, data, and image applications through standard interfaces over a single telephone wire. ISDN provides a means of integrating these services and modernizing com- munication networks for information movement and management efficiency.

THE ADTRAN ISU 128

The ADTRAN ISU™ 128 is a stand-alone device that connects data terminal equipment (DTE) to the ISDN network or to a leased digital network for data transmission. The ISU 128 allows high-speed data transmission (up to 128 kbps) over a single ISDN line. The ISU 128 meets the Microsoft Windows®95 Plug-an-Play specifications. The file MDMADTN.INF is required. To obtain this file contact our website at URL of www.adtran.com ADTRAN technical support. The number is located on the inside back cover of this manual.

From the network, ISDN is delivered by a single 2-wire 2B1Q U-interface which is connected directly to the ISU 128. ISDN network termination is de- signed into the ISU 128, eliminating the need and expense of a separate NT1. For network testing, the ISU 128 responds to NT1 test commands from the tele- phone company central office (CO).

The ISU 128 transmits data over an RS-530, V.35 interface, or EIA-232 interface, selectable on the front panel. The ISU 128 performs at synchronous data trans- fer rates of 2400 bps to 128 kbps and asynchronous rates of 300 bps to 115.2 kbps. For speeds over 64 kbps, the industry standard BONDING or MULTI- LINK PPP protocol aggregates the two 64 kbps B channels for a maximum of 128 kbps. The ISU 128 is intended to support the transfer of data and images

61202.029L2-1

ISU 128 User Manual

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ADTRAN ISU 128 user manual Isdn Overview, Adtran ISU
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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.