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3Com DIA3CV1100-02 manual Glossary

Models: DIA3CV1100-02

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GLOSSARY 43

GLOSSARY

ac Alternating Current. Electric current that reverses its direction of flow periodically according to frequency measured in hertz, or cycles per second.

CO Central Office. A card in the VCN AC chassis; the card provides an Ethernet port and an LMA port; another name for the Line Card (LC).

EMC Electromagnetic compatibility

HDLC High-level Data Link Control. HDLC is a bit oriented, synchronous protocol that applies to the data-link message packaging layer (layer 2 of the ISO/OSI model) for computer communications. messages are transmitted in units called frames, which contain differing amounts of data but which must be organized in a particular way.

Hz Abbreviation for hertz, electrical cycles pr second.

ID Identifier used for the management login procedure.

ISP Internet service Provider. A business that supplies Internet connectivity services to individuals, businesses and other organizations within a local area.

IT Information Technology

Krone connectors Connectors on patch cords used to connect or jumper patch panels

LAN Local Area Network. A group of computers and other devices dispersed over a relatively limited area and connected by a communications link that enables every device to interact with any other on the network.

LED Light Emitting Diode. A semi-conductor device that converts electrical energy into light, used, for example, for the activity lights on the VCN AC and VCN AP units and appears in green or orange.

LMA Local Management Access.

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3Com DIA3CV1100-02 manual Glossary

Contents

Visitor and Community Network Access Concentrator INSTALLATION GUIDEVersion UNITED STATES GOVERNMENT LEGEND 3Com Corporation 5400 Bayfront Plaza Santa Clara, CaliforniaVISITOR AND COMMUNITY NETWORK ACCESS CONCENTRATOR INSTALLATION GUIDE CONTENTS3COM CORPORATION LIMITED WARRANTY EMC STATEMENTS SAFETY STATEMENT A PRODUCT SPECIFICATION INDEX GLOSSARYVISITOR AND COMMUNITY NETWORK ACCESS CONCENTRATOR INSTALLATION GUIDE Functionality VCN AccessSystem Overview ConcentratorLocal Management Access LMA hidden connectors Figure 1 VCN Access Concentrator Front PanelFigure 2 VCN Access Concentrator Back Panel Power LEDTable 1 VCN AC Front Panel LEDs and Connectors Table 1 describes the front panel VCN AC indicators and connectorsbrancher au secteur, ni tenter de la mettre en fonction Précautions deSécurité Sicherheitsvorkehru ngen2 Install a rack for the VCN AC for the VCN AccessPreparing the Site the Visitor and Community Network system is installedAC punch-down block and VCN AP punch-down blocks The outer wire pair carries only voice extension are not used Punch-Down Block Without a Patch Panelwires for the second Note If there is only oneFigure 8 The Four Wires of the Telephone Cable Figure 7 VCN Access Point Rear PanelInner wire pair Outer wire Pair W ire pair not connected to VCNAP Preparing the Site for the VCN Access Concentrator4 Repeat step 1 through step 3 for up to 24 telephone lines Extension W ire pair connected to VCNAPMounting the VCN Access Concentrator in the 19-inch Rack Installing the VCN Access ConcentratorTo mount the VCN AC Back Panel Connections Front Panel Connections IS P Figure 12 VCN Access Concentrator Installed with a Patch PanelBack Panel Connections Access ConcentratorNote on Insertion of Note the following Line Cards in the VCN Patch Panel blocks at the back with RJ-21 connectorsFirst Pin Table 4 Pin Assignment for the RJ-21 Connector continuedFigure 13 Female RJ-21 Connector VCN AC Port NoS w itch Front Panel ConnectionsP unch-D ow n B locks E thernetProcedures for a non-SuperStack Switch Configuring the Ethernet Switch for the VCN Access ConcentratorSequence of Configuration Inserting MAC Addresses for VCN Access Concentrator PortsManual Procedures for SuperStack II 1100/3300 Port No. MAC Address Table 5 VCN AC Port and VCN AP MAC AddressesVCN AC VCN APVCN AC Installing the VCN Access ConcentratorAutomated Procedures for SuperStack II 1100/3300 Add browser window Installing the VCN Access ConcentratorThe ConfApp screen appears Figure Figure 16 ConfApp ScreenThe default Community value is private Figure 17 Entering the Switch AddressFigure 18 Community Parameter Installing the VCN Access ConcentratorFor each wrong switch address the following message appears For units installed in the USA and Canada Select a flexible Powering Up theEthernet Switch Power CordPage Troubleshooting TroubleshootingUsing Front Panel ProblemsLEDs to Solve POSTAC or in the Ethernet switch TroubleshootingProblem SolutionPage PRODUCT SPECIFICATION 40 PRODUCT SPECIFICATION Numbers INDEXPage GLOSSARY POTS MbaudMbps MiniDINGLOSSARY 46 GLOSSARY HARDWARE 3COM CORPORATION LIMITED WARRANTYYEAR 2000 WARRANTY OBTAINING WARRANTY SERVICEDISCLAIMER ADDITIONAL SERVICESGOVERNING LAW LIMITATION OF LIABILITYCSA STATEMENT SAFETY STATEMENTEMC STATEMENTS FCC CLASS A VERIFICATION STATEMENT