Line Module, ASI, 2E3 | Cisco Systems 8600 Series specs

LM-2E3 Module

Figure 5-6 Line Module, ASI, 2E3

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H8031

Service Interface (Line) Cards 5-11

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Cisco Systems 8600 Series manual Line Module, ASI, 2E3

Contents

Release May Cisco BPX 8600 Series ReferencePage Page Page Chapter Introduction About This Manual Chapter General Description BPX Switch Common Core Chapter Network Interface Trunk Cards Chapter Service Interface Line Cards BXM T3/E3, 155, Simba Chapter ATM Connections Chapter ATM and Frame Relay SVCs SPVCs Chapter Tag Switching Chapter BME Multicasting Chapter Repair and Replacement 11-1 Chapter Tiered Networks 13-1 Chapter Frame Relay to ATM Network Service Interworking 12-1 Chapter BPX Snmp Agent 14-1 Appendix a BPX Node Specifications Appendix B BPX Switch Cabling SummaryAppendix C BPX Switch Peripherals Appendix E Glossary Index Appendix D AT3-6ME Interface Adapter F 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-2 Table C-4 Table C-1Table C-2 Table C-3 Xxiv Cisco BPX 8600 Series Reference Audience Cisco WAN Switching Product Name ChangeAbout This Manual Objectives Organization Appendix a BPX Node Specifications Chapter Tag SwitchingChapter Repair and Replacement Chapter Frame Relay to ATM Network and Service Interworking Related Documentation ConventionsRelated Documentation Conventions Xxx Cisco BPX 8600 Series Reference Introduction General DescriptionBPX Capabilities General Description BPX Switch General Configuration Example Extended Services Processor New with Release Continuing Features with ReleaseBPX Switch MGX IGX Switch Network Continuing Features with Release IMATM-B BPX Switch Operation BPX Switch OperationAccess Products BPX Switch Operation Frame Relay to ATM Interworking BPX Switch with MGX 8220 ShelvesTag Switching BPX Switch with Extended Services Processor Frame Relay to ATM Network Interworking Service Interworking Tiered NetworksAdditional Information Routing Hubs and Interface Shelves BPX Switch Routing Hubs Inverse Multiplexing ATM Tiered Network with BPX Switch and IGX Switch Routing Hubs Virtual Trunking Example Virtual Trunking Traffic and Congestion Management FairShareTraffic and Congestion Management OptiClass AutoRouteCost-Based AutoRoute Congestion Management, ForeSight Congestion Management, VS/VD Network Management Network InterfacesNetwork Management Service Interfaces Statistical Alarms and Network StatisticsNode Synchronization Switch Software Description Switch Software DescriptionConnections and Connection Routing Connection Routing Groups Cost-Based Connection Routing Major Features of Cost-Based AutoRoute 22Cisco BPX 8600 Series Reference Cost-Based AutoRoute Commands Network SynchronizationNetwork Synchronization Node Redundancy Switch AvailabilityNode Alarms Switch Availability Switch Availability 26Cisco BPX 8600 Series Reference BPX Switch Enclosure General DescriptionPhysical Description Physical Description BPX Switch Exterior Front View Node Cooling Node DC Powering DC Power Entry Module Shown with Conduit Box Removed Optional AC Power Supply Assembly AC Power Supply Assembly Front View Card Shelf Configuration BPX Switch Card Shelf Front View Functional Description Functional DescriptionPhysical Layer ATM Layer ATM Cell Format ATM Cell Headers NNI Header Functional Description UNI Header Functional Description STI Header STI Header Smds ATM Cell AddressingATM Adaptation Layer AAL 11 SAR Adaptation Process IPX and IGX Switch Trunk Interfaces to ATM BAM SAM UNI FastPacket Adaptation to ATMSTI CAM UNI Simple Gateway Complex Gateway, Frame Relay to ATM Network InterworkingSimple 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-SMF Optional Peripherals Optional Peripherals BPX Switch Common Core Group BPX Switch Common Core Common Core Group Block Diagram Broadband Controller Card BCC-32, BCC-3, BCC-4Broadband 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 Description BCC Front Panel Card Step Gbps Operation with the BCC-4Back Cards for the BCC-3 and BCC-32 Enter y Connector Function Backcard Line Module for BCC-32, Connectors EXT 2 TMG EXT 1 TMG BCC-3-bc or BCC-c Face Plate Connectors Alarm/Status Monitor Card Alarm/Status Monitor Card Controls Indicator Function ASM Front Panel Controls and Indicators ACO Status Line Module for the Alarm/Status Monitor Card LM-ASM Face Plate ConnectorsConnector 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 Backplanes 18Cisco BPX 8600 Series Reference BPX Switch Network Interface Group BXM Cards, Trunk Mode SummaryNetwork Interface Trunk Cards Broadband Network Interface Cards BNI-T3 and BNI-E3 Broadband Network Interface Cards BNI-T3 and BNI-E3 Egress Ingress Simplified BNI-T3, BNI-E3 Block Diagram Bandwidth Control Status LED color Status Description Front Panel IndicatorsLoopbacks and Diagnostics BNI Front Panel Status Indicators Status port Port 2 RX TX LM-3T3 and LM-3E3 ConnectorsT3 and E3 Line Modules LM-3T3 and LM-3E3 Port 1 RX TX LM-3T3 Face Plate, Typical T3 and E3 Line Modules LM-3T3 and LM-3E3 LM-3E3 Face Plate, Typica Ingress Broadband Network Interface Cards, BNI-155Overview Egress CBR 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, & MMF LM-2OC3-SMF Face Plate LM-2OC3-MMF Face Plate Cabling of BNI Backcard, SMF-2-BC Cabling of BNI Backcard, SMF-2-BC 20Cisco BPX 8600 Series Reference Service Interface Line Cards BPX Switch Service Interface Group SummaryBXM Cards, Port UNI Mode Summary ASI-1, ATM Service Interface Card ASI-1, ATM Service Interface Card Egress Configuring Connections ATM over ASI Example Monitoring Statistics 6Cisco BPX 8600 Series Reference ASI-1 Front Panel LM-2T3 Module LM-2T3 Module Line Module, ASI, 2T3 LM-2E3 Module LM-2E3 Module Line Module, ASI, 2E3 ASI-155, ATM Service Interface Card ASI-155, ATM Service Interface Card Configuring 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-SMFLR BXM Cards, Access UNI Mode BXM T3/E3, 155, Tag Switching Dynamic Resource Partitioning for SPVCs BXM CardsDynamic 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 Mbps OC3/STM-1 155.520 Mbps FeaturesBXM Capabilities T3/E3 45 Mbps/34 Mbps BXM Capabilities ATM Layer ABR Service Service TypesCBR Service VBR Service Card Operation BXM Front Card IndicatorsBXM Front Panel Status Indicators BXM Front Panel Card Failure indicators Card 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 Backcards SMF-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 Backcards Overview, Port UNI Mode BXM Functional DescriptionBXM Functional Description BXM Port Access UNI Ingress Operation 10 BXM Port Access, UNI Egress Operation BXM Trunk Ingress Operation Overview, Trunk Mode BXM Trunk Egress Operation DeMux/Mux Detailed Description, Port UNI and Trunk Modes ACP Subsystem Processor Ingress and Egress Queue Engines Performance Monitoring Fault Management and StatisticsFault Management and Statistics, Port UNI Mode Alarms Fault Management and Statistics, Trunk Mode General Information Technical SpecificationsTechnical Specifications Physical Layer Unit Description General Sonet NotesGeneral Sonet Notes Sonet Section, Line, and Path Descriptions Test User CommandsDiagnostics Connection Provisioning Syntax Configuring ConnectionsConfiguration Management Configuring Connections Configuring Connections Field Value Description Command Line Interface Examples Command Line Interface Examples An 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 Summary ASI SVC Resource Partitioning Shown in the following example Example ASI cnfportq Command BXM SVC Resource Partitioning Example BXM cnfport Command NNI Trunk SVC Resource Partitioning TS,NTS,FR,FST,CBR,VBR,ABR BNI Trunk SVC Resource Partitioning BXM Trunk SVC Resource Partitioning Example BNI cnftrkparm Command Example BXM cnftrk Command ATM Connections ATM Connection Services SVCs SVCs Other Attributes Traffic Management OverviewTraffic Parameters QoS Parameters Standard ABR notes Vsvd DescriptionBXM Connections ATM Connection Requirements ForeSight Congestion ControlATM Connection Requirements Addcon Command Syntax Connection RoutingField Value Description ATM Connection Configuration ATM Connection Configuration SCR Flow CLP0+1 BXM T3/E3, OC3 Default Setting OC12 Range ASI T3/E3 Range ASI-155 Range ICR RIFRDF SCR PCRCdvt Vsvd IBS CBR Policing Definitions ATM Forum TM Spec PCR Flow CBR Connections VBR Connections VBR and Atfr Connections Atfr Connections Atfr Connection Prompt Sequence ABR Notes ABR and Atfst ConnectionsABR Connections ABR Standard Connection Prompt Sequence Meaning of Vsvd and Flow Control External Segments ABR ForeSight Connection Prompt Sequence Atfst Connections Atfst Connection Prompt Sequence UBR Policing Definitions ATM Forum TM Spec PCR Flow UBR Connections Traffic Policing Examples Traffic Policing ExamplesDual-Leaky Bucket An Analogy CBR Traffic Policing Examples 11 CBR Connection, UPC Overview 12 CBR.1 Connection with Bucket Compliant LP=1 VBR.1 VBR Dual-Leaky Bucket Policing Examples 14 VBR Connection, UPC Overview Leaky Bucket 15 VBR Connection, Policing = 4, Leaky Bucket 1 Compliant Examples CLP=0 VBR.2 18 VBR.2 Connection, Leaky Bucket 2 Discarding CLP 0 Cells LP=0 VBR.1 VBR.3 UBR Connection Policing ABR Connection Policing 21 UBR Connection, UPC Overview Configuration Traffic Shaping for CBR, VBR, and UBRTraffic Shaping for CBR, VBR, and UBR Traffic Shaping Rates LMI and Ilmi Parameters ATM and Frame Relay SVCs and SPVCs ATM and Frame Relay SVCs, and SPVCs ATM and Frame Relay SVCs and SPVCs PVCs and SVCsPVCs SPVCs SVCs BPX Switch and ESP Interfaces Interim Inter-switch Protocol RoutingBPX Switch and ESP Interfaces Signaling Plane UNI Signaling ChannelSignaling Plane UNI Signaling Channels NNI Signaling Channel Network Interworking Between Frame Relay and ATM Network Interworking Between Frame Relay and ATM Extended Services Processor Extended Services ProcessorESP Interfaces Redundant ESPs Stand-Alone ESP ESP Y-Cable Redundancy Cable Redundancy Other Redundancy Options Resource Partitioning Introduction Tag Switching Tag Switching Benefits Tag Switching OverviewTag Switching Benefits Forwarding Elements in a Tag Switching NetworkTag Switching Operation at Layer Elements in a Tag Switching Network Tag 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 BPX BPX Tag Switching BPX Switch VSI Interfaces Virtual Switch Interfaces Connection Setup, End Points on same VSI Slave Tag Switching Resource Configuration Parameters Tag Switching Resource Configuration Parameters Configuring VSI Lcns Useful Default Allocations Port VSI Partition LCN Allocation Elements Details of More Rigorous Allocations Requirements List of TermsRequirements Configuration Management Related DocumentsRelated Documents Configuration Criteria Configuration CriteriaCnfqbin Command Cnfrsrc Command Example Parameter cnfrsrc Value Description Cnfrsrc Parameter Summary Dspcds Configuration ExampleResetcd 4 h Configuration Example Status 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 Cnfrsrc 22Cisco BPX 8600 Series Reference Cnfqbin 4.1 Enable/disable e Dspqbin 4.1Cnfqbin 4.1 10 e 0 65536 95 100 Addshelf 4.1 vsi 1 Checking and Troubleshooting Checking and TroubleshootingTsc# show controllers VSI descriptor Dspnode Dsptrks Dsprsrc 4.1 Tsc# show tag int Tsc# reloadTsc# sho tag tdp disc Provisioning and Managing Connections StatisticsProvisioning and Managing Connections Command Reference Command ReferenceBPX Switch Commands TSC Commands Attributes Related CommandsAddshelf Syntax Example for Tag Switching Description for Tag Switching Description for Interface Shelves Example for Interface ShelvesAddshelf 11.1 a Example Related Commands dspqbin Parameters-cnfqbinBPX switch Cnfqbin Cnfqbin 4.1 10 e 0 65536 95 100 Description Related Commands Parameters-cnfrsrc 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 Total Lcns available to Port VSI Partition =Port 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-dspcd Dspcds DspcdsParameters-dspcds Syntax dspcds l Example dspcds KDJ BPX switch, IGX switch Yes DspnodeDspnode 50Cisco BPX 8600 Series Reference Dspqbin Related Commands cnfqbin Parameters-dspqbinDspqbin Example dspqbin 4.1 Example dspqbin 4.1 10 Sample Display Dsprsrc Related Commands cnfrsrc Parameters-dspcdsDsprsrc Example dsprsrc 4.1 Dsptrks Dsptrks Example Resetcd ResetcdExample resetcd 5 H Yes IPX switch, IGX switch, BPX switch Upport Yes BPX switchUpport Example upport System Response Example uptrk UptrkParameters-uptrk Optional Parameters-uptrk Uptrk BME Multicasting Multicasting Overview BME FeaturesStandards Multicasting Benefits Address Criteria Connection Management CriteriaConnection Management with Cisco StrataView Plus BME Restrictions BME Operation BME Cell ReplicationBME Operation Group Group Action CommandCell Replication Stats Adding Connections Multicast Statistics Multi-Segment Multicast Connections OAM cells AlarmsAlarms Policing Hot Standby Backup Hot Standby BackupAIS cells Configuration Connection DiagnosticsConfiguration Configuration Management General Troubleshooting Procedures Repair and ReplacementPreventive Maintenance Troubleshooting the BPX Switch Troubleshooting the BPX Switch Symptom Probable Cause Remedy Troubleshooting the BPX Switch Symptom Probable Cause Remedy BCC Card Status for the BPX SwitchDisplaying the Status of Cards in the Node Card Type Status Description Replacing Parts Replacing PartsReplacing a Front Card Top of the grille should pop out Replacing Parts Step Unlatching the Air Intake Grille Replacing a Line Module 11-8Cisco BPX 8600 Series Reference Removing a Line Module Replacing a DC Power Entry Module DC Power Entry Module with Conduit Box AC Power Supply Assembly Replacing an AC Power Supply Removing Blank Filler Panel B side shown Field-Installing a Second AC Power Supply Replacing the Fan Assembly Replacing Card Slot and Fan Fuses on the System Backplane Replacing the Temperature Sensing Unit Card 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 Interworking 12-2Cisco BPX 8600 Series Reference Service Interworking Networking Interworking Networking Interworking MUX 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 Stack Protocol Stack Operation AIT/BTM Control Mapping, Frames and Cells Limitations FeaturesManagement, OAM Cells ATF Summary Addcon Cnfcls Cnfcon Delcon Dspcls Dspcon Dspcons Some ATF Connection CriteriaConnection Management Port Management Clrchstats Cnfchstats Dspchstats Dspchstatcnf Dspchstathist Channel StatisticsStructure Cnfport Cnfportq Diagnostics OAM Cell SupportDspalms Dspcon Dspport Tstconseg Tstdly User Commands Virtual Circuit Features AUser Commands ManagementManagement Routing Bandwidth ManagementUser Interface Alarms Signaling Tiered Networks Routing Hubs and Interface ShelvesBPX and IGX Routing Hubs Tiered Network with BPX and IGX Routing Hubs Routing Hubs and Interface Shelves BPX Routing Hubs in a Tiered Network Tiered Network ImplementationBPX Routing Hubs in a Tiered Network Upgrades GeneralDefinitions Network Management Co-locating Routing Hubs and Interface Shelves Local and Remote Loopbacks IPX Interface Shelf DescriptionForeSight Preferred Routing Configuration and Management Alarm Management of Interface Shelf on the BPX Hub NodeInterface Shelf Management Bandwidth Management Alarm Management on the IPX Interface ShelfPort Management Connection Management IGX Routing Hubs in a Tiered Network IGX Routing Hubs in a Tiered Network IGX 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 Shelf Voice Channel Commands Data Connection CommandsData Channel Commands Voice Connection Commands Cisco StrataView Plus NMS Cisco StrataView Plus NMS 13-18Cisco BPX 8600 Series Reference Snmp Overview BPX Snmp Agent Snmp Overview 1shows an Snmp manager and the nodes within a domain Snmp Functions Snmp Functions ATM Set Requests Responses to Get Get-Next Requests MIB II Support Responses to Set RequestsMIB II Support Cisco WAN Switching Proprietary MIB Structure Cisco WAN Switching Proprietary MIB StructureSwitch Service Objects Switch Connections Bandwidth Class Endpoint StatisticsEndpoint Mapping 14-8Cisco BPX 8600 Series Reference General BPX Node Specifications General ATM Trunk Interface BXM-T3/E3 Cards Characteristic T3 DS3ATM Trunk Interface BXM-T3/E3 Cards ATM Trunk Interface BXM-155 Cards ATM Trunk Interface BXM-155 Cards SMF LR ~40 KM ATM 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-3T3 ATM E3 Trunk Interface BNI-E3, LM-3E3 ATM E3 Trunk Interface BNI-E3, LM-3E3 ATM OC3 Trunk Interface BNI-OC3, LM-OC3 ATM OC3 Trunk Interface BNI-OC3, LM-OC3 ATM Service Interface BXM-T3/E3 Cards ATM Service Interface BXM-T3/E3 CardsATM Service Interface BXM-155 Cards ATM Service Interface BXM-622 Cards ATM Service Interface ASI-1, LM-2T3 ATM Service Interface ASI-1, LM-2E3ATM Service Interface ASI-1, LM-2T3 ATM Service Interface ASI-2, LM-OC3 ATM Service Interface ASI-2, LM-OC3 12Cisco BPX 8600 Series Reference Trunk Cabling BPX Switch Cabling SummaryPower Cabling AC Powered Nodes Auxiliary and Control Port Cabling DC Powered NodesTable B-3 DC Power Wiring Cable Parameter Description LM-BCC Cabling Table B-7 LAN Port Pin Assignments Pin # Name LAN Port CablingModem Cabling Table B-6 LAN Port Cabling Cable Parameter Description External Clock Input Cabling T1 Clock CablingLM-BCC Cabling Table B-12through Table B-15lists E1 clock cabling details E1 Clock Cabling Table B-17 Network Alarm Pin Assignments Description External Alarm CablingStandard BPX Switch Cables External Alarm Cabling Redundancy Y Cable Table B-19 Redundancy Y-Cables Used On Cisco P/NLM-BCC TBS Redundancy Y Cable Cisco StrataView Plus Terminal Control Port, Local Control BPX Switch Peripherals DIP Switch Settings for Okidata Table C-3 Switch a Settings-Okidata 184 Printer DescriptionPrinter Table C-4 Switch 1 Settings-Okidata 184 Printer Description Table C-5 Switch 2 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-Out AT%C ATL1ATSØ=1 AT\N3 IPX Auto-Dial to Customer Service AT\J AT\Q1AT\T3 8Cisco BPX 8600 Series Reference Application AT3-6ME Interface Adapter Interface Connectors Equipment DescriptionEquipment Description DB9 Table D-1 Rear Panel Connectors Type DescriptionT3 RX BNC T3 TX BNC DIP Switches Table D-2 Front Panel Indicators Color DescriptionFT2 FT2 Front and Rear Panel Table D-3 DIP Switch SW-1 Selection Guide Position Function InstallationAT3-6ME Configuration Installation BPX, IGX, or IPX Port Configuration Power-Up SequenceOperation Operation Normal OperationRemote Loop Operation Terminal Operation Commands Table D-6 DIP Switch SettingsTable D-7 Command Summary Parameters Meaning BPV NNN SpecificationsSpecifications Table D-8 Status Display T3 interface Mechanical PowerSpecifications T2 Interface 12Cisco BPX 8600 Series Reference Glossary ASM Alarm/Status Monitor Cards ARC Alarm Relay CardARI Alarm Relay Interface Card ARM Alarm Relay Module BC-E1 Backcard E1 B8ZS Bipolar with Eight Zero SuppressionBandwidth reservation Channel CCS Common Channel Signalling BPX SwitchCAS Channel Associated Signalling Ccdv Compliant Cell Delay Variation Circuit line CGA Carrier Group AlarmCell Cell relay Dacs Digital Access and Control System COS Class of ServiceCrosspoint switch CSU Channel Service Unit DS1 Digital Signal DDS Digital Data ServiceDial Access Switching DS0 Digital Signal Fast EIA DSI Digital Speech InterpolationDTE Data Terminal Equipment ECN Explicit Congestion Notification Frame relay connection class Frame Relay ServiceFrame forwarding FPC FastPAD Back Card Gateway IGX SwitchFTC FastPAD Trunk Card FTM FastPAD Trunk Module Junction trunk IPX SwitchIsdn Integrated Services Digital Network Junction node Local addressing Local alarmMajor alarm Minor alarm Nrm Packet switchingNPC Network Processor Card NPM Network Processor Module PCR Peak Cell Rate Partially-interleaved EIAPBX private branch exchange PCM Pulse Code Modulation 921/Q.931 Red alarmRemote alarm Robbed bit signaling SCM System Clock Module SAR Segmentation and ReassemblyRS-449 SCC System Clock Card Status Enquiry SVC switched virtual circuitSpeech detection Split clock Trunk conditioning TimestampTrm Trunk Virtual circuit Voice Network SwitchingVAD Voice Activity Detection VBR Variable Bit Rate Yellow alarm CablesCable redundancy ATM ABR STDAdtf ASI FRF.4 Frtt DlciESP Fbtc Spvc PnniSAM Snmp VPI TftpTSR VCI Strongly agree Strongly disagree Documentation Response Card Business Reply Mail