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Cisco Systems 8600 Series manual Card

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Figure 6-2 BXM-622 Front Panel, Two-Port Card Shown

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BXM T3/E3, 155, and 622 6-9

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Cisco Systems 8600 Series manual Card

Contents

Release May Cisco BPX 8600 Series ReferencePage Page Page Chapter Introduction About This ManualChapter General Description BPX Switch Common CoreChapter Network Interface Trunk Cards Chapter Service Interface Line CardsBXM T3/E3, 155, SimbaChapter ATM Connections Chapter ATM and Frame Relay SVCs SPVCs Chapter Tag SwitchingChapter BME Multicasting Chapter Repair and Replacement 11-1 Chapter Tiered Networks 13-1 Chapter Frame Relay to ATM Network Service Interworking 12-1Chapter BPX Snmp Agent 14-1 Appendix B BPX Switch Cabling Summary Appendix a BPX Node SpecificationsAppendix C BPX Switch Peripherals Appendix E Glossary Index Appendix D AT3-6ME Interface AdapterF I G U R E S Xviii Cisco BPX 8600 Series Reference List of Figures Dial-Modem Cabling for Auto Answer Dial-In to BPX T a B L E S Table B-3 Table A-1Table B-1 Table B-2Table C-4 Table C-1Table C-2 Table C-3Xxiv Cisco BPX 8600 Series Reference Audience Cisco WAN Switching Product Name ChangeAbout This Manual ObjectivesOrganization Appendix a BPX Node Specifications Chapter Tag SwitchingChapter Repair and Replacement Chapter Frame Relay to ATM Network and Service InterworkingConventions Related DocumentationRelated Documentation Conventions Xxx Cisco BPX 8600 Series Reference General Description IntroductionBPX Capabilities General Description BPX Switch General Configuration Example Extended Services ProcessorNew with Release Continuing Features with ReleaseBPX Switch MGX IGX SwitchNetwork Continuing Features with ReleaseIMATM-B BPX Switch Operation BPX Switch OperationAccess Products BPX Switch OperationFrame Relay to ATM Interworking BPX Switch with MGX 8220 ShelvesTag Switching BPX Switch with Extended Services ProcessorFrame Relay to ATM Network Interworking Tiered Networks Service InterworkingAdditional Information Routing Hubs and Interface Shelves BPX Switch Routing Hubs Inverse Multiplexing ATM Tiered Network with BPX Switch and IGX Switch Routing HubsVirtual Trunking Example Virtual TrunkingFairShare Traffic and Congestion ManagementTraffic and Congestion Management AutoRoute OptiClassCost-Based AutoRoute Congestion Management, ForeSight Congestion Management, VS/VDNetwork Interfaces Network ManagementNetwork Management Statistical Alarms and Network Statistics Service InterfacesNode Synchronization Switch Software Description Switch Software DescriptionConnections and Connection Routing Connection Routing Groups Cost-Based Connection Routing Major Features of Cost-Based AutoRoute22Cisco BPX 8600 Series Reference Network Synchronization Cost-Based AutoRoute CommandsNetwork Synchronization Node Redundancy Switch AvailabilityNode Alarms Switch AvailabilitySwitch Availability 26Cisco BPX 8600 Series Reference General Description BPX Switch EnclosurePhysical Description Physical Description BPX Switch Exterior Front ViewNode Cooling Node DC PoweringDC Power Entry Module Shown with Conduit Box Removed Optional AC Power Supply AssemblyAC Power Supply Assembly Front View Card Shelf ConfigurationBPX Switch Card Shelf Front View Functional Description Functional DescriptionPhysical Layer ATM LayerATM Cell Format ATM Cell HeadersNNI Header Functional Description UNI HeaderFunctional Description STI Header STI HeaderSmds ATM Cell AddressingATM Adaptation Layer AAL11 SAR Adaptation Process IPX and IGX Switch Trunk Interfaces to ATMBAM SAM UNI FastPacket Adaptation to ATMSTI CAM UNIComplex Gateway, Frame Relay to ATM Network Interworking Simple GatewaySimple and Complex Gateway Formats BPX Switch Major Groups BPX Switch Major GroupsBPX Switch Plug-In Card Summary Card Name Where LM-2OC3-SMFLR BMESmfxlr LM-2OC3-SMFOptional Peripherals Optional PeripheralsBPX Switch Common Core Group BPX Switch Common CoreBroadband Controller Card BCC-32, BCC-3, BCC-4 Common Core Group Block DiagramBroadband Controller Card BCC-32, BCC-3, BCC-4 Features Functional Description BCC-32 and BCC-3 Block Diagram LAN BCC Front Panel IndicatorsIndicator Function Front Panel DescriptionBCC Front Panel CardStep Gbps Operation with the BCC-4Back Cards for the BCC-3 and BCC-32 Enter yConnector Function Backcard Line Module for BCC-32, ConnectorsEXT 2 TMG EXT 1 TMGBCC-3-bc or BCC-c Face Plate Connectors Alarm/Status Monitor Card Alarm/Status Monitor CardControls Indicator Function ASM Front Panel Controls and IndicatorsACO StatusLM-ASM Face Plate Connectors Line Module for the Alarm/Status Monitor CardConnector Indicator Function LMI-ASM Face Plate BPX Switch StrataBus 9.6 and 19.2 Gbps Backplanes BPX Switch StrataBus 9.6 and 19.2 Gbps Backplanes18Cisco BPX 8600 Series Reference BXM Cards, Trunk Mode Summary BPX Switch Network Interface GroupNetwork Interface Trunk Cards Broadband Network Interface Cards BNI-T3 and BNI-E3 Broadband Network Interface Cards BNI-T3 and BNI-E3Egress Ingress Simplified BNI-T3, BNI-E3 Block DiagramBandwidth Control Status LED color Status Description Front Panel IndicatorsLoopbacks and Diagnostics BNI Front Panel Status IndicatorsStatus port Port 2 RX TX LM-3T3 and LM-3E3 ConnectorsT3 and E3 Line Modules LM-3T3 and LM-3E3 Port 1 RX TXLM-3T3 Face Plate, Typical T3 and E3 Line Modules LM-3T3 and LM-3E3LM-3E3 Face Plate, Typica Ingress Broadband Network Interface Cards, BNI-155Overview EgressCBR VBR Simplified BNI-155 Block Diagram Act Stby Fail Failure Description 7BNI-155 Front Panel OC3, Line Modules SMF, SMFLR, & MMF LM-OC3-SMF and LM-OC3-SMFLR Connectors FunctionLM-OC3-MMF Connectors Function OC3, Line Modules SMF, SMFLR, & MMFLM-2OC3-SMF Face Plate LM-2OC3-MMF Face Plate Cabling of BNI Backcard, SMF-2-BC Cabling of BNI Backcard, SMF-2-BC20Cisco BPX 8600 Series Reference BPX Switch Service Interface Group Summary Service Interface Line CardsBXM Cards, Port UNI Mode Summary ASI-1, ATM Service Interface Card ASI-1, ATM Service Interface CardEgress Configuring Connections ATM over ASI Example Monitoring Statistics 6Cisco BPX 8600 Series Reference ASI-1 Front Panel LM-2T3 Module LM-2T3 ModuleLine Module, ASI, 2T3 LM-2E3 Module LM-2E3 ModuleLine Module, ASI, 2E3 ASI-155, ATM Service Interface Card ASI-155, ATM Service Interface CardConfiguring Connections ASI-155 Simplified Block Diagram Service Interface Line Cards ASI-155 Front Panel ASI-155 Line Module, LM-2OC3-MMF BXM Cards, Access UNI ModeASI-155 Line Module, LM-2OC3-SMF ASI-155 Line Module, LM-2OC3-SMFLRBXM Cards, Access UNI Mode BXM T3/E3, 155, Tag SwitchingBXM Cards Dynamic Resource Partitioning for SPVCsDynamic Resource Partitioning for SPVCs BXM Cards BPX-T3/E3-BC T3/E3 45 Mbps/34MbpsOC3/STM-1 155.52 Mbps OC12/STM-4 622.08 MbpsOC3/STM-1 155.520 Mbps FeaturesBXM Capabilities T3/E3 45 Mbps/34 MbpsBXM Capabilities ATM LayerABR Service Service TypesCBR Service VBR ServiceCard Operation BXM Front Card IndicatorsBXM Front Panel Status Indicators BXM Front Panel Card Failure indicatorsCard BXM-155 Front Panel, Eight-Port Card Shown BXM-T3/E3 Front Panel, 12-Port Card Shown BXM-T3/E3 Backcards BXM, Backcard ConnectorsBXM-622 Backcards BXM-155 BackcardsSMF-622-2, SMFLR-622-2, and SMFXLR-622-2 Back Card BXM-155-8 Port Backcard, MMF, SMF, or Smflr BPX-T3/E3 Back Card, 12-Port Option Shown Y-Cabling of SMF-622 Series Backcards Cabling of SMF-622 Series BackcardsBXM Functional Description Overview, Port UNI ModeBXM Functional Description BXM Port Access UNI Ingress Operation 10 BXM Port Access, UNI Egress Operation BXM Trunk Ingress Operation Overview, Trunk ModeBXM Trunk Egress Operation DeMux/Mux Detailed Description, Port UNI and Trunk ModesACP Subsystem Processor Ingress and Egress Queue EnginesPerformance Monitoring Fault Management and StatisticsFault Management and Statistics, Port UNI Mode AlarmsFault Management and Statistics, Trunk Mode General Information Technical SpecificationsTechnical Specifications Physical LayerUnit Description General Sonet NotesGeneral Sonet Notes Sonet Section, Line, and Path DescriptionsTest User CommandsDiagnostics Connection ProvisioningSyntax Configuring ConnectionsConfiguration Management Configuring ConnectionsConfiguring Connections Field Value Description Command Line Interface Examples Command Line Interface ExamplesAn example of the addtrk command follows An example of the cnfln command follows An example of the cnfportq command follows An example of the upport command follows An example of the cnfcls command for class 2 follows YourID1 BPX Jan 1998 0241 GMT An example of the cnfabrparm command follows An example of the dsplns command follows 40Cisco BPX 8600 Series Reference Resource Partitioning Resource PartitioningDynamic Resource Partitioning for SPVCs SummaryASI SVC Resource Partitioning Shown in the following example Example ASI cnfportq Command BXM SVC Resource Partitioning Example BXM cnfport CommandNNI Trunk SVC Resource Partitioning TS,NTS,FR,FST,CBR,VBR,ABR BNI Trunk SVC Resource PartitioningBXM Trunk SVC Resource Partitioning Example BNI cnftrkparm CommandExample BXM cnftrk Command ATM Connections ATM Connection ServicesSVCs SVCsOther Attributes Traffic Management OverviewTraffic Parameters QoS ParametersVsvd Description Standard ABR notesBXM Connections ForeSight Congestion Control ATM Connection RequirementsATM Connection Requirements Connection Routing Addcon Command SyntaxField Value Description ATM Connection Configuration ATM Connection ConfigurationSCR Flow CLP0+1BXM T3/E3, OC3 Default Setting OC12 Range ASI T3/E3 Range ASI-155 RangeRIF ICRRDF SCR PCRCdvt VsvdIBS CBR Policing Definitions ATM Forum TM Spec PCR Flow CBR ConnectionsVBR Connections VBR and Atfr ConnectionsAtfr Connections Atfr Connection Prompt Sequence ABR and Atfst Connections ABR NotesABR Connections ABR Standard Connection Prompt Sequence Meaning of Vsvd and Flow Control External Segments ABR ForeSight Connection Prompt Sequence Atfst ConnectionsAtfst Connection Prompt Sequence UBR Policing Definitions ATM Forum TM Spec PCR Flow UBR ConnectionsTraffic Policing Examples Traffic Policing ExamplesDual-Leaky Bucket An Analogy CBR Traffic Policing Examples11 CBR Connection, UPC Overview 12 CBR.1 Connection with Bucket Compliant LP=1VBR.1 VBR Dual-Leaky Bucket Policing Examples14 VBR Connection, UPC Overview Leaky Bucket 15 VBR Connection, Policing = 4, Leaky Bucket 1 Compliant ExamplesCLP=0 VBR.2 18 VBR.2 Connection, Leaky Bucket 2 Discarding CLP 0 Cells LP=0VBR.1 VBR.3 UBR Connection Policing ABR Connection Policing21 UBR Connection, UPC Overview Traffic Shaping for CBR, VBR, and UBR ConfigurationTraffic Shaping for CBR, VBR, and UBR Traffic Shaping Rates LMI and Ilmi ParametersATM and Frame Relay SVCs and SPVCs ATM and Frame Relay SVCs, and SPVCsATM and Frame Relay SVCs and SPVCs PVCs and SVCsPVCs SPVCsSVCs Interim Inter-switch Protocol Routing BPX Switch and ESP InterfacesBPX Switch and ESP Interfaces UNI Signaling Channel Signaling PlaneSignaling Plane UNI Signaling Channels NNI Signaling ChannelNetwork Interworking Between Frame Relay and ATM Network Interworking Between Frame Relay and ATMExtended Services Processor Extended Services ProcessorESP Interfaces Redundant ESPs Stand-Alone ESPESP Y-Cable Redundancy Cable RedundancyOther Redundancy Options Resource Partitioning Introduction Tag SwitchingTag Switching Overview Tag Switching BenefitsTag Switching Benefits Forwarding Elements in a Tag Switching NetworkTag Switching Operation at Layer Elements in a Tag Switching NetworkTag Switching in an ATM WAN Tag Switching in an ATM WANControl Tag Forwarding Information Base Tfib in an ATM Environment Downstream on Demand Tag Allocation, Conservative Mode Shown Tag Switching and the BPX Tag Switching and the BPXBPX Tag Switching BPX Switch VSI Interfaces Virtual Switch InterfacesConnection Setup, End Points on same VSI Slave Tag Switching Resource Configuration Parameters Tag Switching Resource Configuration ParametersConfiguring VSI Lcns Useful Default Allocations Port VSI Partition LCN Allocation Elements Details of More Rigorous AllocationsList of Terms RequirementsRequirements Related Documents Configuration ManagementRelated Documents Configuration Criteria Configuration CriteriaCnfqbin Command Cnfrsrc CommandExample Parameter cnfrsrc Value Description Cnfrsrc Parameter SummaryDspcds Configuration ExampleResetcd 4 h Configuration ExampleStatus Active Revision CD18 VSI start VPI VSI end VPI VSI min b/w VSI max b/w Max PVC bandwidth Partition Enabled e VSI min LCNsUptrk 4.1 uptrk 4.2 uptrk Cnfrsrc22Cisco BPX 8600 Series Reference Dspqbin 4.1 Cnfqbin 4.1 Enable/disable eCnfqbin 4.1 10 e 0 65536 95 100 Addshelf 4.1 vsi 1 Checking and Troubleshooting Checking and TroubleshootingTsc# show controllers VSI descriptor Dspnode DsptrksDsprsrc 4.1 Tsc# reload Tsc# show tag intTsc# sho tag tdp disc Statistics Provisioning and Managing ConnectionsProvisioning and Managing Connections Command Reference Command ReferenceBPX Switch Commands TSC CommandsAttributes Related CommandsAddshelf SyntaxExample for Tag Switching Description for Tag SwitchingExample for Interface Shelves Description for Interface ShelvesAddshelf 11.1 a Example Related Commands dspqbin Parameters-cnfqbinBPX switch CnfqbinCnfqbin 4.1 10 e 0 65536 95 100 DescriptionCnfrsrc Related Commands Parameters-cnfrsrcParameter cnfrsrc Description Cnfrsrc Parameter cnfrsrc Description Here, ax = 256, n1x = 512, and m1x = 10 Port VSI Partition LCN Allocation Elements Example 1, 8-Port OC3 BXM Configured in Trunk Mode Cnfrsrc Port VSI Partition = Total Lcns available toPort N1x Unallocated Min z1 + n1x, max M1x LCNs Example 2, 8-Port OC3 BXM Configured in Port Mode 44Cisco BPX 8600 Series Reference 120 3000 3500 4907 7588 100 Dspcd IPX switch, IGX switch, BPX switchDspcd Parameters-dspcdDspcds DspcdsParameters-dspcds Syntax dspcds l Example dspcdsKDJ Dspnode BPX switch, IGX switch YesDspnode 50Cisco BPX 8600 Series Reference Dspqbin Related Commands cnfqbin Parameters-dspqbinDspqbin Example dspqbin 4.1Example dspqbin 4.1 10 Sample Display Dsprsrc Related Commands cnfrsrc Parameters-dspcdsDsprsrc Example dsprsrc 4.1Dsptrks DsptrksExample Resetcd ResetcdExample resetcd 5 H Yes IPX switch, IGX switch, BPX switchUpport Yes BPX switchUpport Example upportSystem Response Example uptrk UptrkParameters-uptrk Optional Parameters-uptrkUptrk BME Multicasting Multicasting Overview BME FeaturesStandards Multicasting BenefitsAddress Criteria Connection Management CriteriaConnection Management with Cisco StrataView Plus BME RestrictionsBME Cell Replication BME OperationBME Operation Group Group Action CommandCell Replication Stats Adding ConnectionsMulticast Statistics Multi-Segment Multicast ConnectionsOAM cells AlarmsAlarms PolicingHot Standby Backup Hot Standby BackupAIS cells Connection Diagnostics ConfigurationConfiguration Configuration Management General Troubleshooting Procedures Repair and ReplacementPreventive Maintenance Troubleshooting the BPX SwitchTroubleshooting the BPX Switch Symptom Probable Cause Remedy Troubleshooting the BPX SwitchSymptom Probable Cause Remedy BCC Card Status for the BPX SwitchDisplaying the Status of Cards in the Node Card Type Status DescriptionReplacing Parts Replacing PartsReplacing a Front Card Top of the grille should pop out Replacing Parts StepUnlatching the Air Intake Grille Replacing a Line Module11-8Cisco BPX 8600 Series Reference Removing a Line Module Replacing a DC Power Entry ModuleDC Power Entry Module with Conduit Box AC Power Supply Assembly Replacing an AC Power SupplyRemoving Blank Filler Panel B side shown Field-Installing a Second AC Power SupplyReplacing the Fan Assembly Replacing Card Slot and Fan Fuses on the System Backplane Replacing the Temperature Sensing UnitCard Slot and Fan Fuse Locations on System Backplane 11-16Cisco BPX 8600 Series Reference Frame Relay to ATM Network and Service Interworking Frame Relay to ATM Network and Service Interworking12-2Cisco BPX 8600 Series Reference Service Interworking Networking Interworking Networking InterworkingMUX FRP BUS AIT BNI ATF Connections, Simplified Example ATM Protocol Stack ATM Protocol StackATM Layers AIT/BTM Interworking and the ATM Protocol Stack AIT/BTM Interworking and the ATM Protocol StackProtocol Stack Operation AIT/BTM Control Mapping, Frames and Cells Limitations FeaturesManagement, OAM Cells ATF SummaryAddcon Cnfcls Cnfcon Delcon Dspcls Dspcon Dspcons Some ATF Connection CriteriaConnection Management Port ManagementClrchstats Cnfchstats Dspchstats Dspchstatcnf Dspchstathist Channel StatisticsStructure Cnfport CnfportqOAM Cell Support DiagnosticsDspalms Dspcon Dspport Tstconseg Tstdly User Commands Virtual Circuit FeaturesManagement AUser CommandsManagement Bandwidth Management RoutingUser Interface Alarms SignalingRouting Hubs and Interface Shelves Tiered NetworksBPX and IGX Routing Hubs Tiered Network with BPX and IGX Routing Hubs Routing Hubs and Interface ShelvesTiered Network Implementation BPX Routing Hubs in a Tiered NetworkBPX Routing Hubs in a Tiered Network General UpgradesDefinitions Network Management Co-locating Routing Hubs and Interface ShelvesLocal and Remote Loopbacks IPX Interface Shelf DescriptionForeSight Preferred RoutingAlarm Management of Interface Shelf on the BPX Hub Node Configuration and ManagementInterface Shelf Management Bandwidth Management Alarm Management on the IPX Interface ShelfPort Management Connection ManagementIGX Routing Hubs in a Tiered Network IGX Routing Hubs in a Tiered NetworkIGX Shelves and Routing Hubs, Frame Relay Connections General Co-locating Routing Hubs and Shelves IGX Interface Shelf Description Shelf Management Shelf User Interface CommandsAlarm Management of Interface Shelf on the IGX Hub Node Alarm Management on the IGX Interface ShelfVoice Channel Commands Data Connection CommandsData Channel Commands Voice Connection CommandsCisco StrataView Plus NMS Cisco StrataView Plus NMS13-18Cisco BPX 8600 Series Reference Snmp Overview BPX Snmp AgentSnmp Overview 1shows an Snmp manager and the nodes within a domainSnmp Functions Snmp FunctionsATM Set Requests Responses to Get Get-Next RequestsResponses to Set Requests MIB II SupportMIB II Support Cisco WAN Switching Proprietary MIB Structure Cisco WAN Switching Proprietary MIB StructureSwitch Service Objects Switch ConnectionsEndpoint Statistics Bandwidth ClassEndpoint Mapping 14-8Cisco BPX 8600 Series Reference General BPX Node SpecificationsGeneral ATM Trunk Interface BXM-T3/E3 Cards Characteristic T3 DS3ATM Trunk Interface BXM-T3/E3 Cards ATM Trunk Interface BXM-155 CardsATM Trunk Interface BXM-155 Cards SMF LR ~40 KMATM Trunk Interface BXM-622 Cards ATM Trunk Interface BXM-622 CardsSMF IR TX SMF IR RX SMF LR TX SMF LR RX ATM T3 Trunk Interface BNI-T3, LM-3T3 ATM T3 Trunk Interface BNI-T3, LM-3T3ATM E3 Trunk Interface BNI-E3, LM-3E3 ATM E3 Trunk Interface BNI-E3, LM-3E3ATM OC3 Trunk Interface BNI-OC3, LM-OC3 ATM OC3 Trunk Interface BNI-OC3, LM-OC3ATM Service Interface BXM-T3/E3 Cards ATM Service Interface BXM-T3/E3 CardsATM Service Interface BXM-155 Cards ATM Service Interface BXM-622 CardsATM Service Interface ASI-1, LM-2E3 ATM Service Interface ASI-1, LM-2T3ATM Service Interface ASI-1, LM-2T3 ATM Service Interface ASI-2, LM-OC3 ATM Service Interface ASI-2, LM-OC312Cisco BPX 8600 Series Reference Trunk Cabling BPX Switch Cabling SummaryPower Cabling AC Powered NodesAuxiliary and Control Port Cabling DC Powered NodesTable B-3 DC Power Wiring Cable Parameter Description LM-BCC CablingTable B-7 LAN Port Pin Assignments Pin # Name LAN Port CablingModem Cabling Table B-6 LAN Port Cabling Cable Parameter DescriptionT1 Clock Cabling External Clock Input CablingLM-BCC Cabling Table B-12through Table B-15lists E1 clock cabling details E1 Clock CablingTable B-17 Network Alarm Pin Assignments Description External Alarm CablingStandard BPX Switch Cables External Alarm CablingTable B-19 Redundancy Y-Cables Used On Cisco P/N Redundancy Y CableLM-BCC TBS Redundancy Y Cable Cisco StrataView Plus Terminal Control Port, Local Control BPX Switch PeripheralsTable C-3 Switch a Settings-Okidata 184 Printer Description DIP Switch Settings for OkidataPrinter Table C-5 Switch 2 Settings-Okidata 184 Printer Description Table C-4 Switch 1 Settings-Okidata 184 Printer DescriptionPrinter Modems, Dial-In and Dial-Out Motorola V.34R BPX Switch Dial-In ConfigurationBPX Switch Auto-Answer Dial-In to BPX switch Modems, Dial-In and Dial-OutAT%C ATL1ATSØ=1 AT\N3IPX Auto-Dial to Customer Service AT\Q1 AT\JAT\T3 8Cisco BPX 8600 Series Reference Application AT3-6ME Interface AdapterEquipment Description Interface ConnectorsEquipment Description DB9 Table D-1 Rear Panel Connectors Type DescriptionT3 RX BNC T3 TX BNCTable D-2 Front Panel Indicators Color Description DIP SwitchesFT2 FT2 Front and Rear PanelTable D-3 DIP Switch SW-1 Selection Guide Position Function InstallationAT3-6ME Configuration InstallationPower-Up Sequence BPX, IGX, or IPX Port ConfigurationOperation Operation Normal OperationRemote Loop Operation Terminal OperationTable D-6 DIP Switch Settings CommandsTable D-7 Command Summary Parameters Meaning BPV NNN SpecificationsSpecifications Table D-8 Status Display T3 interfaceMechanical PowerSpecifications T2 Interface12Cisco BPX 8600 Series Reference Glossary ASM Alarm/Status Monitor Cards ARC Alarm Relay CardARI Alarm Relay Interface Card ARM Alarm Relay ModuleBC-E1 Backcard E1 B8ZS Bipolar with Eight Zero SuppressionBandwidth reservation ChannelCCS Common Channel Signalling BPX SwitchCAS Channel Associated Signalling Ccdv Compliant Cell Delay VariationCircuit line CGA Carrier Group AlarmCell Cell relayDacs Digital Access and Control System COS Class of ServiceCrosspoint switch CSU Channel Service UnitDS1 Digital Signal DDS Digital Data ServiceDial Access Switching DS0 Digital SignalFast EIA DSI Digital Speech InterpolationDTE Data Terminal Equipment ECN Explicit Congestion NotificationFrame relay connection class Frame Relay ServiceFrame forwarding FPC FastPAD Back CardGateway IGX SwitchFTC FastPAD Trunk Card FTM FastPAD Trunk ModuleJunction trunk IPX SwitchIsdn Integrated Services Digital Network Junction nodeLocal addressing Local alarmMajor alarm Minor alarmNrm Packet switchingNPC Network Processor Card NPM Network Processor ModulePCR Peak Cell Rate Partially-interleaved EIAPBX private branch exchange PCM Pulse Code Modulation921/Q.931 Red alarmRemote alarm Robbed bit signalingSCM System Clock Module SAR Segmentation and ReassemblyRS-449 SCC System Clock CardStatus Enquiry SVC switched virtual circuitSpeech detection Split clockTrunk conditioning TimestampTrm TrunkVirtual circuit Voice Network SwitchingVAD Voice Activity Detection VBR Variable Bit RateCables Yellow alarmCable redundancy ATM ABR STDAdtf ASIFRF.4 Frtt DlciESP FbtcSpvc PnniSAM SnmpVPI TftpTSR VCIStrongly agree Strongly disagree Documentation Response CardBusiness Reply Mail