Paradyne 727 manual Glossary

Page 65

Glossary

aggregate

A single bit stream that combines two or more bit streams.

ASCII

American Standard Code for Information Interchange. A 7-bit code that establishes

 

compatibility between data services. ASCII is the standard for data transmission over

 

telephone lines.

ASCII Terminal or

Devices that can be attached, either locally or remotely, to display or print the DSU's alarm

Printer

messages.

asynchronous

A data transmission that is synchronized by a transmission start bit at the beginning of

 

a character (five to eight bits) and one or more stop bits at the end.

AT Command Set

Attention Command Set. A group of commands, issued from an asynchronous DTE, that

 

allows control of the modem while in Command mode. All commands must begin with the

 

characters AT and end with a carriage return.

ATI

Asynchronous terminal interface. This feature allows a device to be controlled from an

 

async (asynchronous) terminal like an ASCII (VT100-compatible) terminal.

autobaud mode

An operational mode in which the DSU forces automatic setting of the DDS line rate/speed

 

(56 or 64 kbps) as soon as a valid DDS network signal is detected.

AUX port

The auxiliary communications port on a router.

BPV

Bipolar Violation. A modified bipolar signaling method in which a control code is inserted.

CCA

Circuit Card Assembly. A printed circuit board to which separate components are attached.

CCITT

Consultative Committee on International Telegraphy and Telephony. See ITU.

CD

Carrier Detect. A signal indicating that energy exists on the transmission circuit.

 

Associated with Pin 8 on an EIA-232 interface.

channel

An independent data path.

CMI

Control Mode Idle. A control signal sent over the DDS line to indicate that no data is being

 

sent.

COM port

Communications port. A computer's serial communications port used to transmit to and

 

receive data from a DCE. The DCE connects directly to this port.

configuration option

Device software that sets specific operating parameters for the DSU.

CPE

Customer Premises Equipment. Terminating equipment supplied by either the customer or

 

some other supplier that is connected to the telecommunications network (e.g., DSUs,

 

terminals, phones, routers, modems).

CSU

Channel Service Unit. The function of the DSU that protects the T1 line from damage and

 

regenerates the T1 signal.

CTS

Clear to Send. An EIA-lead standard for V.24 circuit CT 106; an output signal

 

(DCE-to-DTE).

DCE

Data Communications Equipment. The equipment that provides the functions required to

 

establish, maintain, and end a connection. It also provides the signal conversion required

 

for communication between the DTE and the network.

DDS

Digital Data Service. Provides digital communication circuits.

7510-A2-GB20-00

March 1997

GL-1

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Contents Area Code Change Model 7510 DSU Copyright  1997 Paradyne Corporation All rights reserved Contents Monitoring the DSU Technical Specifications Glossary Index Document Summary About This GuideDocument Purpose and Intended Audience Model 7510 DSU Startup Instructions Product-Related DocumentsAbout the DSU Model 7510 DSU FeaturesRouter Typical DSU ConfigurationsFrame Router Relay NetworkRear Panel Interfaces User InterfacesModem TerminalConnecting to the Terminal Port Using the Asynchronous Terminal InterfaceMain Menu Initiating an ATI SessionSelect Screen Format Types Status Test Configuration Control Load FromWhat Affects Screen Displays Use the screen formatData Port Options Screen Work AreasPress Navigating the ScreensKeyboard Keys For the screen Select Press Return to Function Screen Function KeysNetwork Tests Switching to the Screen Function Key AreaExample Ending an ATI Session Identifying the Device and System Customizing the DSUMain Menu → Control → Device Name Device NameIf you select Then Saving Configuration OptionsConfiguration Option Areas Configuring the DSUAccessing and Displaying Configuration Options Configuration Option Area Configuration Option SetWhat to Monitor Monitoring the DSUSystem and Test Status Health and Status SELF-TEST Results Viewing System and Test StatusMain Menu → Status → System and Test Status Hhhmmss Health and StatusSelf-Test Results Messages What Message Indicates What To Do Self-Test ResultsTest Status Messages Meaning Test Status MessagesMain Menu → Status → Network Interface Status Viewing Network Interface StatusNetwork Performance Statistics Viewing Network Performance StatisticsMonitoring the LEDs Alarm Test DM OOS OOF NS TXD RXD RTS CTS DTRMain Menu → Status → Display LEDs Display Leds System NetworkSystem LEDs AlarmOOS ± Out of Service DM ± Data ModeNS ± No Signal Network LEDsPort LEDs Accessing the Test Menu TestingMain Menu → Test TestNetwork Interface Options , Table A-2 Device Messages Loopback Type Initiated ByMain Menu → Test → Network Tests Running Network TestsCSU or External Network Loopback Send V.54 Up/Down Sequences DSU or Internal Network LoopbackTest Pattern for the Network Data Port Tests Running Data Port TestsMain Menu → Test → Data Port Tests Test Pattern for the DTE Local LoopbackMain Menu → Test → Lamp Test Running the Lamp TestEnding an Active Test Messages and Troubleshooting Messages and TroubleshootingResponding to Device Messages Device Messages 1 What Message Indicates What To DoDevice Messages 2 What Message Indicates What To Do Troubleshooting 1 Symptom Possible Cause Solutions TroubleshootingTroubleshooting 2 Symptom Possible Cause Solutions Resetting the DSUMain Menu → Control → Reset Device Displaying DSU Identity InformationSelect To Access To Configure Configuration Option TablesOverview Status Load Edit/Display TestLads Timing Possible Settings Internal, External, Receive Operating ModeSystem Options Menu Table A-1. System Options 1Table A-1. System Options 2 Test TimeoutLads Line Rate Kbps Test Duration minTable A-2. Network Interface Options Network Interface Options MenuNetwork-initiated DSU Loopback 64K CC Data Scrambling 64K CCTable A-3. Data Port Options 1 Data Port Options MenuInvert Transmit Clock Bilateral LoopbackRlsd Control Table A-3. Data Port Options 2Carrier Control by RTS Terminal Port Options Inactivity TimeoutTable A-3. Data Port Options 3 Table A-4. Terminal Port Options 1Disconnect Timeminutes Table A-4. Terminal Port Options 2Worksheets Configuration WorksheetsConfiguration Option Settings Network Interface Cables and Pin Assignments Signal Direction Pin # Terminal Port EIA-232 ConnectorDirection Pin Socket Connector User Data Port ConnectorSignal Pin Standard EIA-232-D Crossover CableModular RJ48S DDS Network Interface Cable LAN Adapter Converter and CableRJ48S DDS Network Interface Cable Functions Circuit Pin # Cable Plug to Modular Jack LAN AdapterTable D-1. Model 7510 DSU Technical Specifications 1 Technical SpecificationsNetwork Interface Table D-1. Model 7510 DSU Technical Specifications 2Network Compatibility DTE Data Port InterfaceGlossary EIA-232 Factory defaultsExcessive BPV Frame relayMultiplexing ResetNode Non-latchingNumbers IndexIN-2 IN-3

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.

In addition to its performance and management features, the Paradyne 727 is built with security in mind. It supports both local authentication and RADIUS authentication, providing robust access control mechanisms to protect sensitive data and ensure that only authorized users can access the network. This emphasis on security contributes to the modem's appeal in enterprise settings, where data integrity is paramount.

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.
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