Glossary

office. A CSU regenerates digital signals. It monitors them for problems, and provides a way of testing the digital circuit.

CTS

clear to send. A signal on the DTE interface indicating that the DCE is clear to send data.

dB

The standard abbreviation for decibel. A decibel is a unit of measure for signal. A decibel is usually the relation between a transmitted signal and a standard signal source. Therefore, 6 dB of loss would mean that there is a 6 dB difference between what arrives down a communications circuit and what was transmitted by a standard signal generator.

DCE

data communications equipment. A device that provides all the functions required for connection to telephone company lines and for converting signals between telephone lines and DTE. Also see DTE.

DDS

digital data service. AT&T private line service for transmitting data over a digital system. The digital transmission system transmits electrical signals directly, instead of translating the signals into tone of varied frequencies as with traditional analog transmission systems. Digital techniques provide more efficient use of transmission facilities, resulting in lower error rates and costs than analog systems.

DE

discard eligibility. A user-set bit indicating that a frame may be discarded in preference to other frames if congestion occurs, to maintain the committed quality of service within the network. Frames with the DE bit set are considered Be excess data.

DLCI

data link connection identifier. A unique number assigned to a PVC end point in a frame relay network. Identifies a particular PVC endpoint within a user's access channel in a frame relay network and has local significance only to that channel.

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1204002L1, 1200214L1, 1204006L1 specifications

ADTRAN, a renowned provider of networking and communications equipment, has developed a range of products designed to enhance telecommunications infrastructure. Among these are the models ADTRAN 1204006L1, 1200214L1, and 1204002L1. Each of these devices combines innovative features and cutting-edge technology to offer robust solutions for modern networking demands.

The ADTRAN 1204006L1 is designed for high-performance fiber optic networking. It supports advanced wavelength-division multiplexing (WDM) technology, enabling multiple data streams to be transmitted simultaneously over a single fiber line. This feature significantly increases network capacity and efficiency, making it ideal for service providers who require a scalable solution. Furthermore, the 1204006L1 includes integrated Ethernet switching capabilities, simplifying network management and reducing operational complexity.

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Lastly, the ADTRAN 1204002L1 is a versatile network access device that supports both T1 and Ethernet services. This dual-functionality makes it an exceptional choice for businesses that require a reliable connection for voice and data services. The 1204002L1 is equipped with advanced QoS (Quality of Service) features, ensuring that critical applications receive priority bandwidth. This model also supports carrier-grade reliability, enabling service providers to offer consistent and high-quality services to end-users.

Collectively, these ADTRAN products showcase the company's commitment to innovation and reliability in telecommunications. With their diverse range of technologies—ranging from fiber optics to DSL and T1 services—ADTRAN provides flexible solutions that cater to the needs of various users, from individual consumers to large enterprises. The combination of high-performance capabilities and user-friendly features positions ADTRAN's offerings as essential tools in today’s interconnected world. Businesses can thus leverage these advanced technologies to enhance their connectivity and meet the evolving demands of their customers.
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