Glossary

DMI

Data Mode Idle. Refers to a sequence of ones transmitted or received on the DDS

 

network.

DSR

Data Set Ready. An EIA-lead standard for V.24 circuit CT 107; an output signal

 

(DCE-to-DTE).

DSU

Data Service Unit. Data communications equipment that provides an interface between the

 

DTE and the digital network.

DTE

Data Terminal Equipment. The equipment, such as computers and printers, that provides

 

or creates data.

DTR

Data Terminal Ready. An EIA-lead standard for V.24 circuit CT 108; an input signal

 

(DTE-to-DCE).

EIA

Electronic Industries Association. This organization provides standards for the data

 

communications industry to ensure uniformity of interface between DTEs and DCEs.

EIA-232

The EIA's standards defining the 25-pin interface between the DTE and DCE.

excessive BPV

An excessive bipolar violation condition results when at least one invalid bipolar violation

 

has occurred every 20 milliseconds for 2 seconds.

factory defaults

A predetermined set of configuration options for general operation.

FCC

Federal Communications Commission. Board of Commissioners that regulates all U.S.

 

interstate, intrastate, and foreign electrical communication systems that originate from the

 

United States.

frame relay

A switching interface that is designed to get frames from one part of the network to another

 

as quickly as possible.

full-duplex

The capability to transmit in two directions simultaneously.

HDLC

High-Level Data Link Control. A communications protocol defined by the International

 

Standards Organization (ISO).

interface

A shared boundary between functional units.

ITU

International Telecommunication Union, formerly known as CCITT . An advisory committee

 

established by the United Nations to recommend communications standards and policies.

LADS

Local Area Data Set is used to provide a point-to-point link between two devices (also

 

called LDM ± limited distance modem).

LAN

Local Area Network. A network designed to connect devices over short distances, like

 

within a building.

latching loopback

A latching loopback can only be initiated or terminated by the 64 kbps clear channel

 

network service provider.

LED

Light Emitting Diode. A status indicator that responds to the presence of a certain

 

conditions.

link layer protocol

The protocol that regulates the communication between two network nodes.

LL

Local Loopback. An EIA-lead standard for V.24 circuit CT 141; an input signal

 

(DTE-to-DCE).

loopback

Used to test various portions of a data link in order to isolate an equipment or data line

 

problem. A diagnostic procedure that sends a test message back to its origination point.

LSD

Line Signal Detect. An EIA-lead standard for V.24 circuit CT 109; an output signal

 

(DCE-to-DTE).

GL-2

March 1997

7510-A2-GB20-00

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Paradyne 727 EIA-232, Excessive BPV, Factory defaults, Frame relay, Full-duplex, Interface, Latching loopback, Loopback

727 specifications

The Paradyne 727 is a cutting-edge piece of networking equipment that stands out for its robust performance and versatility in various technological environments. Designed primarily as a digital subscriber line (DSL) modem, the Paradyne 727 has gained significant traction among service providers looking to enhance their broadband offerings for residential and business customers.

One of the main features of the Paradyne 727 is its ability to support both Asymmetric Digital Subscriber Line (ADSL) and Very-high-bit-rate Digital Subscriber Line (VDSL) technologies. This dual compatibility allows for flexible deployment in different network infrastructures, whether in urban areas with high demand for broadband or in rural areas where DSL remains a feasible option. The device is capable of delivering high-speed internet access with downstream rates that can reach up to 24 Mbps for ADSL and up to 50 Mbps for VDSL, ensuring faster connectivity for users.

The Paradyne 727 is also equipped with advanced modulation technologies, such as discrete multitone modulation (DMT), which provides a superior noise immunity and allows for higher data rates over traditional DSL technologies. This capability makes it particularly beneficial in environments with varied signal quality. Moreover, the modem features an auto-sensing capability that helps it adjust to the best transmission parameters automatically, simplifying installation and maintenance for service providers.

Another significant characteristic of the Paradyne 727 is its user-friendly design. The device incorporates an intuitive web-based management interface that allows network administrators to efficiently monitor performance metrics, configure settings, and perform troubleshooting from a centralized location. This feature streamlines operations and minimizes downtime, which is crucial in maintaining service quality and customer satisfaction.

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With its comprehensive features, advanced technologies, and commitment to performance and security, the Paradyne 727 is a significant player in the world of broadband networking. Its adaptability makes it suitable for a wide range of applications, supporting the growing demand for high-speed internet access across various market segments.