Chapter 1: Understanding ISDN and the Express XL/XLT

2.IP Router: The Express XL/XLT can function as an IP router using the Routing Information Protocol (RIP) for advertising and learning routes among other routers. Static routes may also be entered into the routing ta- ble.

3.IPX Router: IPX routers and services can be exchanged between the Ex- press XL/XLT and other devices using RIP and Service Advertising Pro- tocol (SAP). Watch dog serialization filtering and spoofing can permit the ISDN to be idle during no application traffic periods.

4.Network Address Translation (NAT): Single networks can connect to the Internet with this function. The Express XL/XLT translates outgoing IP packets over the ISDN to the IP router at the Internet Service Provider.

Popular Internet applications are supported.

5.POTS: The POTS interface can be used for interfacing to dual tone multi- frequency (DTMF) analog devices such as telephones, modems, fax ma- chines, etc. The Express XLT POTS option is available on part number 1200070L2 only.

Demand Routing and Bridging with the Express XL/XLT

The Express XL/XLT is a dial-up ISDN IP Router and Transparent Learning Bridge that provides Dial-On-Demand and Dynamic Bandwidth Manage- ment. Its features can be easily configured and used once several basic con- cepts are understood.

Factory Default

The Express XL/XLT comes from the factory configured for MAC Bridging, IP routing and IPX routing with no filters or connection information defined. An IP address of 10.0.0.1 with a network mask of 255.255.255.0 is preloaded. Dy- namic Bandwidth Management features are disabled. Although dynamic as- signment of a B-channel for the analog (POTS) port on the Express XLT model is always available, link idle time-out and adding/removing of B-channels based on traffic is initially disabled.

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Express XL/XLT User Manual

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ADTRAN Express XLT user manual Demand Routing and Bridging with the Express XL/XLT, Factory Default

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.