Appendix B: Log Messages

NOT end2end ISDN level 4

The path that the call was routed over is not ISDN from end-to-end. This is a warning and is most often seen for POTS calls.

Power Up - last down cause: <reason> level 0 (displayed as level 1 after the unit is reset)

This is the <reason> for the last reset. Most are caused by internal errors. Pos- sible reasons are:

Bus Error - Bad address occurred on the internal bus Kernel error - General operating system error

No SBCs - Mail resources used up or lost Router stack error - Fatal error in protocol stack

general panic - general error no rip - rip tasks could not start

out of memory - out of available memory out of TCP ports - all TCP ports are used up unknown error - unknown fatal error has occurred

Set timer error - Cannot set real time clock

Software Watch Dog Reset - Software watchdog was not updated

Probe: all ports busy level 3

All ports were busy when it was time to probe. An attempt will be made on the next probe interval.

Probe failed level 2

An attempt to connect to a probe site failed.

Probing <name> level 4

The Express XL/XLT is making an outgoing call to the destination specified by the description in the Connection List in order to get an update on routes.

POTS call bump level 4

The Express XLT has dropped bandwidth on an existing data call so that a POTS call can be connected.

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Express XLT, Express XL specifications

ADTRAN has established itself as a leading provider of telecommunications solutions, and among its impressive lineup, the ADTRAN Express XL and Express XLT stand out as robust offerings designed for the evolving demands of modern networks. These devices cater to service providers and enterprises looking to enhance their broadband delivery capabilities while ensuring cost-efficiency and reliability.

The ADTRAN Express XL is a high-capacity, next-generation fiber optic access platform. It is engineered to support a wide array of technologies, including Passive Optical Network (PON) standards such as GPON and XGSPON. The Express XL's architecture allows for seamless scalability, making it a perfect fit for both small-scale deployments and expansive network rollouts. What sets it apart is its ability to deliver ultra-fast broadband services to residential, business, and mobile backhaul customers with its impressive throughput capabilities.

On the other hand, the Express XLT builds upon the success of the Express XL by incorporating advanced features aimed at maximizing operational efficiency. It supports technologies including Active Ethernet and offers flexible network configurations to meet specific service requirements. Both models utilize ADTRAN’s innovative Dynamic Bandwidth Allocation technology, which dynamically allocates bandwidth to users based on real-time demand, ensuring optimal performance and user satisfaction.

A key characteristic of both ADTRAN Express XL and XLT is their energy efficiency. Designed to minimize operational costs, these units use power-saving technologies that reduce energy consumption without compromising performance. Furthermore, they include built-in support for network functions virtualization (NFV) and software-defined networking (SDN), providing operators with the agility to adapt their networks in response to changing market conditions.

In addition to their advanced technological underpinnings, the Express XL and XLT boast an intuitive management interface, simplifying network monitoring and management tasks. They also feature comprehensive telemetry and analytics capabilities that help operators gain insights into network performance, optimize configurations, and troubleshoot potential issues before they affect end users.

Ultimately, the ADTRAN Express XL and Express XLT are pivotal components for service providers aiming to deliver high-speed broadband services effectively. With their blend of flexibility, scalability, and energy efficiency, these access platforms are well-positioned to meet the current and future demands of telecommunications networks worldwide.