ADTRAN ISU 128 user manual Setting the LDN

Models: ISU 128

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Chapter 6. Configuration

When selecting a SPID, use the Up and Down arrows to choose between SPID 1 and SPID 2. Press Enter to select the SPID and use the keypad to enter the SPID number. While entering/editing a SPID, the Down arrow allows ou to backspace through the number string to correct mistakes. The Up arrow scrolls back to the last digit entered. To cancel a number, use the Down arrow to backspace through it and press Enter. Press Enter after entering each SPID. To abort changes at any time, press Cancel.

Disconnect the network interface from the unit before initially entering and/or altering the SPIDs or LDNs.

Setting the LDN

This option allows the entry of 0, 1, or 2 LDNs. The LDN is used when placing or receiving BONDING calls. The LDN is the seven-digit local phone number assigned to the line.

When entering and LDN, use the Up and Down arrows to choose between LDN 1 and LDN 2. Press Enter to select the LDN and use the keypad to enter the LDN number. While entering/editing an LDN, the Down arrow allows you to backspace through the number string to correct mistakes. The Up arrow scrolls back to the last digit entered. To cancel a number, use the Down arrow to backspace through it and press Enter. Press Enter after entering each LDN. To abort changes at any time, press Cancel.

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ISU 128 User Manual

61202.029L2-1

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ADTRAN ISU 128 user manual Setting the LDN

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.