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ADTRAN 550 user manual Figure B-1. Three Virtual Circuits in One Physical Circuit

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Appendix B. OSI Model and Frame Relay Technology Overview

gotiation of the bandwidth parameters during the circuit setup. SVCs are currently unavailable from most frame relay providers, and ATLAS only supports PVCs.

PVC Physical Connections

Figure B-1 illustrates three PVCs being delivered over one physical circuit. The frame relay switch within the frame relay provider’s circuit makes a physical connection for each PVC. Each of the PVCs could connect to a dif- ferent physical location at the other end of the circuit. Figure B-2 illustrates a frame relay network topology.

	PVC		X
	768		X
		kbps
PVC
32	Z		PVCY
32	kbps
	kbps
			128	kbps
				kbps

Figure B-1. Three Virtual Circuits in One Physical Circuit

		B
	Frame Relay	Frame Relay/Router
	Network
A	Virtual circuit X	C
	Virtual circuit Y
Frame Relay/Router	Virtual circuit Z	Frame Relay/Router
Frame Relay/Router		Frame Relay/Router
		D
		Frame Relay/Router

Figure B-2. Frame Relay Network using Virtual Circuits

B-4

ATLAS 550 User Manual

61200305L1-1

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ADTRAN 550 user manual Figure B-1. Three Virtual Circuits in One Physical Circuit

Contents

Atlas Trademarks Service Type REN/SOC FIC UsocAffidavit Requirements for Connection to Digital Services Page Canadian Equipment Limitations About this Manual Introduction Getting StartedReference Information Working with the AtlasKeyboard Commands Notations and Conventions Menu ItemsLimited Product Warranty Additional Warranty InformationPage Table of Contents Chapter Using the Front Panel 61200305L1-1 Xiii Chapter Module Terminal Menus Modules Menu T1Network Interface Module Chapter Router Dedicated Maps 10-1 Dial Plan 11-1 61200305L1-1 Xix Table of Contents 12-1 Xmodem CRC Appendix B OSI Model and Frame Relay Technology Overview Table of Contents Xxiv List of Figures List of Figures 61200305L1-1 Xxvii List of Figures Xxviii List of Tables List of Tables Introduction Product OverviewAccess Router Frame RelayAccess Switch Frame Relay Circuit RouterDedicated and Switched Connection Maps in a Single Platform Digital Access Cross-Connect System DacsAdditional Applications WAN OverbookingAtlas 550 Features Switched Connection Maps TestingDedicated Connection Maps Performance MonitoringInstallation Contents of Adtran ShipmentsInspecting the Adtran Shipment Grounding Instructions Supplying Power to the Unit Mounting OptionsReviewing the Rear Panel Design Control/Chain In Port Control/Chain In PinoutPIN Name Description Control/Chain Out Port Ethernet ConnectionControl/Chain Out Pinout Ethernet PinoutAlarm Relay Connection External Alarm Relay Monitor ConnectionAlarm Relay Connector Pinout Pin Name DescriptionExternal Relay Monitor Connector Pinout Network ConnectionNetwork RJ-48C Pinout Frame Relay Specifications Network Interface 15-pin Male D-connector PinoutTest Interface IP Router Specifications Installing Option ModulesOption Slots Installation Using the Terminal Menus Using VT-100 Terminal EmulationOperation OverviewInstructions for Defining the IP Address Step ActionUsing Telnet Starting a Telnet SessionOperation Using the Front Panel ACO SwitchCraft Port Front Panel LedsCraft Port Pinout Feature Description Controller Status LEDs ACO SwitchAtlas 550 Front Panel Description Network Module LEDsFor these LEDs This color light Indicates that Power Atlas 550 LEDsEthernet RemoteModule Online Module TestUsing the Front Panel Navigating the Terminal Menus Terminal Menus WindowViewing the Menus Menu Path Window PanesWindow Pane Navigation Additional Terminal Menu Window Features Navigating Using the Keyboard Keys Extended HelpMoving through the Menus Session Management KeystrokesTo do this Press this key To do this Press thisConfiguration Keystrokes Getting HelpSystem Control Terminal Menus To do this Go to this menuPassword Security Levels Security LevelsSystem Info RightsStartup Mode Current TIME/DATE Installed MemorySystem Location System ContactSystem Status Menu Event LOGClear System Event LOG Ethernet Port S TatusResource Usage RationChain Port Signal Leads ZeroChain Port TX BytesSystem Config Backup Timing SourcePrimary Timing Source MAX Telnet Sessions Snmp Access MbpsChain Port Snmp Current ES Thrsh Total PCV Thrsh D4 Total PCV Thrsh ESFSyslog Setup Event LoggingAccess Passwords Instructions for Adding/Deleting PasswordsDeleting Passwords Licenses Alarm Relay Reset Alarm Relay Threshold System Utility MenuAvailable update options vary depending on whether you Indicates the slot number Update Status Config TransferTftp Server Configuration file, reboots, then restarts using the new View Self-test Log DSP RAM RTC RAMTDM RAM DramReboot System Factory Default System Module Terminal Menus ModulesAlarm SLTType MenuModules Menu T1Network Interface Module StatusREV LOS REDYellow DS0 a LarmDisplays the A/B signaling bits for Rx and Tx DS0s DS0 a LarmsTX Prms LBOLOC LB Module Terminal Menus Packet Manager Packet Manager MenusPacket Manager Menu Tree Packet Endpnts LMI PerformanceFrame Relay Statistics Tbop Statistics DlciConfig Becn CountFecn Count Operates in NNI mode QOS PVC CIRDlci State Sublinks Example Dlci QOSUsage Characters Character DescriptionResults MN/AV/MX DLY Endpnt CountEndpnts Sort Packet Cncts SublinkProtocol Enable IQ Stats Port EnablesCncts Sort Frame Relay IQView IQ Statistics INK PollCRC Error PVC IA Time RX FecnTX Fecn RX BecnRX CR TX CRPacket Manager Router Router IP Menu Tree IP Menus Static RoutesARP Cache RoutesInterfaces Subnet Mask FAR-END AddressOnly advertises routes not learned through this interface Ethernet Proxy ARPPort Name Ping Reset Stats StatisticsTX Stats START/STOPReasmTimeout Name Description ForwDatagramsInUnknownProtos InDiscardsIcmp Icmp StatisticsName Description OutRedirects OutEchosOutEchoReps OutTimestampsUDP Statistics IP Fast CacheIP Fast Cache Statistics UDP Relay Relay TableUDP Port Router Dedicated Maps Dedicated Maps Menu TreeUsing Dedicated Maps with Frame Relay Activate MAPCurrent MAP AutoCreate / Edit Maps MAP NameConnects From S LTTo S LT/S RT/PEP1ST DS0 DSO RateT1 Trouble Code Service only applies to non-RBS T1s SIG RBSActivate Time Enbl DAYExample 1 Setting Trunk Conditioning Example 2 Creating a Dedicated MapT1-A T1-B PBXAtlas External RouterConfiguring the Ports for Example Instructions for Configuring the PortsInstructions for Defining the Data Connections Data ConnectionsInstructions for Defining Voice Connections DS0s Completed Dedicated Map for Example10-12 61200305L1-1 Dial Plan Dial Plan MenuDial Plan Menu Tree Network Term SLOT/SVCOUT#ACCEPT RC ID 5 =Ifce Config Data 64KData 56K 64K and Data 56KUser Term IN#ACCEPTSRC ID Write security 3 Read security $ rejects all long distance calls, but only for this User Global Param Interface Configurations Automatic Routeback Rejection Global Tone TypeDual T1/PRI Module Network TERMINATION/PRI Strip MSD Network Specific Facility Voice Data Called Digits Transferred Prefix Outgoing CallerDual T1/PRI Module Network TERMINATION/RBS Source IDDS0S Available FGD TX SequenceFGD RX Sequence Wink After ANIDigit Suppression Direct Inward Dialing Trunk NumberDual T1/PRI Module User TERMINATION/PRI Network Specific FacilityCalled Digts Transferred Outgoing Caller Source ID Signaling Method Dual T1/PRI Module User TERMINATION/RBSIf Feature Group D is used, did refers only to Dnis digits Did D IgtsDual NX56/64 Module User Termination Source IDPorts Available Number of PortsNumber to Dial Call TypeQuad BRI/U Module Network Termination Spid NumberD64, D56 Quad BRI/U Module User Termination Spid ListCreating Dial PLANS-EXAMPLES Understanding Dial Plan Configurations Example 1 Pstn Connection Dial Plan ConfigurationExample 2 Point-to-Point Connection Dial Plan Configuration Connecting Packet Endpoints in Frame Relay PktendptPORT/PEP Port/PEP Menu Call Routing Table for Routing Using Incoming Number Pktvoice ORT/PEP12. Interface Configuration Network Termination Menus for Network Termination Did DigitsDid Prefix Menus for User Termination Did D IgitsXmodem Firmware Updates Updating FirmwareUpdating Firmware using Xmodem Instructions for Updating Firmware Using XmodemTftp Firmware Updates Updating Firmware using TftpInstructions for Updating Firmware Using Xmodem Step Action Step Action Using a Telnet program, log in to Atlas YPE when updating a LL M Odules of a T YPE in the AtlasFilename of the update file that was recorded earlier Current firmware update or any errors encountered duringTftp Upload Messages Message MeaningComplete Upload Incomplete Upload12-6 61200305L1-1 Snmp Management Snmp OverviewSnmp Basic Components MIBConfiguring a Trap Destination List via the Terminal Menu Snmp TrapsTrap Destination List Disabling Trap Generating Events Standard TrapsStandard Snmp Traps Trap Name Severity DescriptionDS1 Traps Current Alert Snmp Traps DS1 Snmp Current Alert TrapsCurrent Alert Severity Description Total Alert Snmp TrapsTotal Alert Traps Total Alert Severity DescriptionClearing DS1 Alert Traps Far End Alert TrapsAdtran Utilities Syslog Host DaemonSysLog GUI Atlas 550 SysLog Host GUI MonitorMenu Bar FileDisplay LOG FilesHelp Telnet Utility Telnet Menu TreeSession ConnectEdit Options CaptureContents VT-100 UtilityIP Status AboutEdit PortTftp Server Utility ColorsEnable DisableServer AbortStatus Field Meter FieldLOG Field Print LOGSaving the Current Configuration to a Tftp Server Instructions for Saving the Current ConfigurationUnsuccessful Transfer Retrieving the Configuration from a Tftp Server RequestAppendix a System Event Logging Table A-1. System Event Event Category Console Log StringTable A-2. Switchboard Events Table A-3. Nx 56/64 EventsTable A-4. T1 Events Table A-4. T1 Events Category Console Log String Table A-5. Ethernet EventsTable A-6. Isdn Events Isdn Cause Codes Table A-7. Isdn Cause Code Events Category Cause Code LOG Entries Table A-8. Cause Code Log Entry Location Designations Appendix A. System Event Logging Appendix B OSI Model and Frame Relay Technology Overview OSI ModelTable B-1. Seven-Layer OSI Model Example 1 OSI Model Related to Process of Mailing a Letter Send Process Receive ProcessFrame Relay Virtual CircuitsFigure B-2. Frame Relay Network using Virtual Circuits Figure B-1. Three Virtual Circuits in One Physical CircuitData Link Connection Identifier Dlci User-to-Network InterfaceLocal Management Interface LMI Committed Information Rate CIR Table B-2. LMI Group of Four Dlci AssignmentsUse Annex a and Annex DManaging Network Congestion Figure B-4. Network Congestion and Flow ControlTbop Figure C-1. Atlas to Support Packet Data Configuration Appendix C Frame Relay ExamplesFigure C-3. Menu for Creating Packet Endpoints Example IP Routing Network-External RoutersFigure C-9. Menu for Configuring Packet Endpoints 1 Sublinks Figure C-14. Menu for Creating Packet Endpoints Figure C-16. Menu for Connecting Packet Endpoints Step Figure C-18. Public Frame Relay Network Step Figure C-22. Menu for Configuring Dial Plan Step Example 5 Private Frame Relay Network-Packet VoiceFigure C-25. Menu for Creating Packet Endpoints Figure C-29. Connecting PBX DS0 to Frame Relay Endpoint Figure C-30. Connecting FR Endpoint to FR Private NetworkFigure D-1. Atlas 550 Configured for the Router Option Appendix D Router ExamplesExample IP Routing NETWORK-ATLAS AS the CENTRAL-SITE Router Figure D-3. Creating Packet EndpointFigure D-4. Creating Sublinks Appendix D. Router Examples Appendix E Troubleshooting Power-up Self Test FailsCannot pass data from T1 interface to V.35 port Frame relay link is down Appendix E. Troubleshooting Appendix F Acronyms and Abbreviations PBX Glossary LawBecn Dhcp Fecn Hdlc LEC NNI PCM SNA UDP Appendix G. Glossary Appendix G. Glossary Symbols IndexNumerics Index-2 61200305L1-1 Index-3 Index-4 61200305L1-1 Index-5 Index-6 61200305L1-1 Index-7 Index Index-8 Pre-Sales Inquiries and Applications Support Post-Sale SupportRepair and Return