LM-2OC3-SMF Face Plate | Cisco Systems 8600 Series guide

OC3, Line Modules (SMF, SMFLR, & MMF)

Figure 4-8 LM-2OC3-SMF Face Plate

H8033

Network Interface (Trunk) Cards 4-17

Image 109

Cisco Systems 8600 Series manual LM-2OC3-SMF Face Plate

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 B BPX Switch Cabling Summary Appendix a BPX Node SpecificationsAppendix 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-1 Table A-1Table B-2 Table B-3 Table C-2 Table C-1Table C-3 Table C-4 Xxiv Cisco BPX 8600 Series Reference About This Manual Cisco WAN Switching Product Name ChangeObjectives Audience Organization Chapter Repair and Replacement Chapter Tag SwitchingChapter Frame Relay to ATM Network and Service Interworking Appendix a BPX Node Specifications Conventions Related DocumentationRelated Documentation Conventions Xxx Cisco BPX 8600 Series Reference General Description IntroductionBPX Capabilities General Description BPX Switch General Configuration Example Extended Services Processor BPX Switch Continuing Features with ReleaseMGX IGX Switch New with Release Network Continuing Features with Release IMATM-B Access Products BPX Switch OperationBPX Switch Operation BPX Switch Operation Tag Switching BPX Switch with MGX 8220 ShelvesBPX Switch with Extended Services Processor Frame Relay to ATM Interworking Frame 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 Hubs Virtual Trunking Example Virtual Trunking FairShare Traffic and Congestion ManagementTraffic and Congestion Management AutoRoute OptiClassCost-Based AutoRoute Congestion Management, ForeSight Congestion Management, VS/VD Network 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 AutoRoute 22Cisco BPX 8600 Series Reference Network Synchronization Cost-Based AutoRoute CommandsNetwork Synchronization Node Alarms Switch AvailabilitySwitch Availability Node Redundancy Switch Availability 26Cisco BPX 8600 Series Reference General Description BPX Switch EnclosurePhysical 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 Physical Layer Functional DescriptionATM Layer Functional Description ATM Cell Format ATM Cell Headers NNI Header Functional Description UNI Header Functional Description STI Header STI Header ATM Adaptation Layer ATM Cell AddressingAAL Smds 11 SAR Adaptation Process IPX and IGX Switch Trunk Interfaces to ATM BAM STI FastPacket Adaptation to ATMCAM UNI SAM UNI Complex 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 Smfxlr BMELM-2OC3-SMF LM-2OC3-SMFLR Optional Peripherals Optional Peripherals BPX Switch Common Core Group BPX Switch Common Core Broadband 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 Indicator Function BCC Front Panel IndicatorsFront Panel Description LAN BCC Front Panel Card Back Cards for the BCC-3 and BCC-32 Gbps Operation with the BCC-4Enter y Step 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 LM-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 Backplanes 18Cisco 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-E3 Egress Ingress Simplified BNI-T3, BNI-E3 Block Diagram Bandwidth Control Loopbacks and Diagnostics Front Panel IndicatorsBNI Front Panel Status Indicators Status LED color Status Description Status port T3 and E3 Line Modules LM-3T3 and LM-3E3 LM-3T3 and LM-3E3 ConnectorsPort 1 RX TX Port 2 RX TX LM-3T3 Face Plate, Typical T3 and E3 Line Modules LM-3T3 and LM-3E3 LM-3E3 Face Plate, Typica Overview Broadband Network Interface Cards, BNI-155Egress Ingress CBR VBR Simplified BNI-155 Block Diagram Act Stby Fail Failure Description 7BNI-155 Front Panel LM-OC3-MMF Connectors Function LM-OC3-SMF and LM-OC3-SMFLR Connectors FunctionOC3, Line Modules SMF, SMFLR, & MMF 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 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 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-SMF BXM Cards, Access UNI ModeASI-155 Line Module, LM-2OC3-SMFLR ASI-155 Line Module, LM-2OC3-MMF BXM Cards, Access UNI Mode BXM T3/E3, 155, Tag Switching BXM Cards Dynamic Resource Partitioning for SPVCsDynamic Resource Partitioning for SPVCs BXM Cards OC3/STM-1 155.52 Mbps T3/E3 45 Mbps/34MbpsOC12/STM-4 622.08 Mbps BPX-T3/E3-BC BXM Capabilities FeaturesT3/E3 45 Mbps/34 Mbps OC3/STM-1 155.520 Mbps BXM Capabilities ATM Layer CBR Service Service TypesVBR Service ABR Service BXM Front Panel Status Indicators BXM Front Card IndicatorsBXM Front Panel Card Failure indicators Card Operation Card BXM-155 Front Panel, Eight-Port Card Shown BXM-T3/E3 Front Panel, 12-Port Card Shown BXM-622 Backcards BXM, Backcard ConnectorsBXM-155 Backcards BXM-T3/E3 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 BXM 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 Mode BXM Trunk Egress Operation DeMux/Mux Detailed Description, Port UNI and Trunk Modes ACP Subsystem Processor Ingress and Egress Queue Engines Fault Management and Statistics, Port UNI Mode Fault Management and StatisticsAlarms Performance Monitoring Fault Management and Statistics, Trunk Mode Technical Specifications Technical SpecificationsPhysical Layer General Information General Sonet Notes General Sonet NotesSonet Section, Line, and Path Descriptions Unit Description Diagnostics User CommandsConnection Provisioning Test Configuration Management Configuring ConnectionsConfiguring Connections Syntax 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 Dynamic Resource Partitioning for SPVCs Resource PartitioningSummary Resource Partitioning 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 Traffic Parameters Traffic Management OverviewQoS Parameters Other Attributes Vsvd 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 Configuration SCR Flow CLP0+1 BXM T3/E3, OC3 Default Setting OC12 Range ASI T3/E3 Range ASI-155 Range RIF ICRRDF Cdvt PCRVsvd SCR 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 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 Connections Atfst Connection Prompt Sequence UBR Policing Definitions ATM Forum TM Spec PCR Flow UBR Connections Dual-Leaky Bucket An Analogy Traffic Policing ExamplesCBR Traffic Policing Examples 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 Traffic Shaping for CBR, VBR, and UBR ConfigurationTraffic 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 PVCs PVCs and SVCsSPVCs ATM and Frame Relay SVCs and SPVCs SVCs 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 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 Overview Tag Switching BenefitsTag Switching Benefits Tag Switching Operation at Layer Elements in a Tag Switching NetworkElements in a Tag Switching Network Forwarding 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 List of Terms RequirementsRequirements Related Documents Configuration ManagementRelated Documents Cnfqbin Command Configuration CriteriaCnfrsrc Command Configuration Criteria Example Parameter cnfrsrc Value Description Cnfrsrc Parameter Summary Resetcd 4 h Configuration ExampleConfiguration Example Dspcds Status Active Revision CD18 Uptrk 4.1 uptrk 4.2 uptrk Max PVC bandwidth Partition Enabled e VSI min LCNsCnfrsrc VSI start VPI VSI end VPI VSI min b/w VSI max b/w 22Cisco 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 Dsptrks Dsprsrc 4.1 Tsc# reload Tsc# show tag intTsc# sho tag tdp disc Statistics Provisioning and Managing ConnectionsProvisioning and Managing Connections BPX Switch Commands Command ReferenceTSC Commands Command Reference Addshelf Related CommandsSyntax Attributes Example for Tag Switching Description for Tag Switching Example for Interface Shelves Description for Interface ShelvesAddshelf 11.1 a BPX switch Related Commands dspqbin Parameters-cnfqbinCnfqbin Example Cnfqbin 4.1 10 e 0 65536 95 100 Description Cnfrsrc 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 switchParameters-dspcd Dspcd Parameters-dspcds DspcdsSyntax dspcds l Example dspcds Dspcds KDJ Dspnode BPX switch, IGX switch YesDspnode 50Cisco BPX 8600 Series Reference Dspqbin Related Commands cnfqbin Parameters-dspqbinExample dspqbin 4.1 Dspqbin Example dspqbin 4.1 10 Sample Display Dsprsrc Related Commands cnfrsrc Parameters-dspcdsExample dsprsrc 4.1 Dsprsrc Dsptrks Dsptrks Example Example resetcd 5 H ResetcdYes IPX switch, IGX switch, BPX switch Resetcd Upport Yes BPX switchExample upport Upport System Response Parameters-uptrk UptrkOptional Parameters-uptrk Example uptrk Uptrk BME Multicasting Standards BME FeaturesMulticasting Benefits Multicasting Overview Connection Management with Cisco StrataView Plus Connection Management CriteriaBME Restrictions Address Criteria BME Cell Replication BME OperationBME Operation Cell Replication Stats Group Action CommandAdding Connections Group Multicast Statistics Multi-Segment Multicast Connections Alarms AlarmsPolicing OAM cells Hot Standby Backup Hot Standby BackupAIS cells Connection Diagnostics ConfigurationConfiguration Configuration Management Preventive Maintenance Repair and ReplacementTroubleshooting the BPX Switch General Troubleshooting Procedures Troubleshooting the BPX Switch Symptom Probable Cause Remedy Troubleshooting the BPX Switch Symptom Probable Cause Remedy Displaying the Status of Cards in the Node Card Status for the BPX SwitchCard Type Status Description BCC 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 Management, OAM Cells FeaturesATF Summary Limitations Connection Management Some ATF Connection CriteriaPort Management Addcon Cnfcls Cnfcon Delcon Dspcls Dspcon Dspcons Structure Channel StatisticsCnfport Cnfportq Clrchstats Cnfchstats Dspchstats Dspchstatcnf Dspchstathist OAM Cell Support DiagnosticsDspalms Dspcon Dspport Tstconseg Tstdly User Commands Virtual Circuit Features Management AUser CommandsManagement Bandwidth Management RoutingUser Interface Alarms Signaling Routing Hubs and Interface Shelves Tiered NetworksBPX and IGX Routing Hubs Tiered Network with BPX and IGX Routing Hubs Routing Hubs and Interface Shelves Tiered 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 Shelves ForeSight IPX Interface Shelf DescriptionPreferred Routing Local and Remote Loopbacks Alarm Management of Interface Shelf on the BPX Hub Node Configuration and ManagementInterface Shelf Management Port Management Alarm Management on the IPX Interface ShelfConnection Management Bandwidth 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 Alarm Management of Interface Shelf on the IGX Hub Node User Interface CommandsAlarm Management on the IGX Interface Shelf Shelf Data Channel Commands Data Connection CommandsVoice Connection Commands Voice Channel 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 Responses to Set Requests MIB II SupportMIB II Support Switch Service Objects Cisco WAN Switching Proprietary MIB StructureSwitch Connections Cisco WAN Switching Proprietary MIB Structure Endpoint Statistics Bandwidth ClassEndpoint 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-155 Cards ATM Trunk Interface BXM-T3/E3 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-155 Cards ATM Service Interface BXM-T3/E3 CardsATM Service Interface BXM-622 Cards ATM Service Interface BXM-T3/E3 Cards ATM 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-OC3 12Cisco BPX 8600 Series Reference Power Cabling BPX Switch Cabling SummaryAC Powered Nodes Trunk Cabling Table B-3 DC Power Wiring Cable Parameter Description DC Powered NodesLM-BCC Cabling Auxiliary and Control Port Cabling Modem Cabling LAN Port CablingTable B-6 LAN Port Cabling Cable Parameter Description Table B-7 LAN Port Pin Assignments Pin # Name T1 Clock Cabling External Clock Input CablingLM-BCC Cabling Table B-12through Table B-15lists E1 clock cabling details E1 Clock Cabling Standard BPX Switch Cables External Alarm CablingExternal Alarm Cabling Table B-17 Network Alarm Pin Assignments Description Table 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 Peripherals Table 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 BPX Switch Auto-Answer Dial-In to BPX switch Motorola V.34R BPX Switch Dial-In ConfigurationModems, Dial-In and Dial-Out Modems, Dial-In and Dial-Out ATSØ=1 ATL1AT\N3 AT%C IPX Auto-Dial to Customer Service AT\Q1 AT\JAT\T3 8Cisco BPX 8600 Series Reference Application AT3-6ME Interface Adapter Equipment Description Interface ConnectorsEquipment Description T3 RX BNC Table D-1 Rear Panel Connectors Type DescriptionT3 TX BNC DB9 Table D-2 Front Panel Indicators Color Description DIP SwitchesFT2 FT2 Front and Rear Panel AT3-6ME Configuration InstallationInstallation Table D-3 DIP Switch SW-1 Selection Guide Position Function Power-Up Sequence BPX, IGX, or IPX Port ConfigurationOperation Remote Loop Operation Normal OperationTerminal Operation Operation Table D-6 DIP Switch Settings CommandsTable D-7 Command Summary Parameters Meaning Specifications Table D-8 Status Display SpecificationsT3 interface BPV NNN Specifications PowerT2 Interface Mechanical 12Cisco BPX 8600 Series Reference Glossary ARI Alarm Relay Interface Card ARC Alarm Relay CardARM Alarm Relay Module ASM Alarm/Status Monitor Cards Bandwidth reservation B8ZS Bipolar with Eight Zero SuppressionChannel BC-E1 Backcard E1 CAS Channel Associated Signalling BPX SwitchCcdv Compliant Cell Delay Variation CCS Common Channel Signalling Cell CGA Carrier Group AlarmCell relay Circuit line Crosspoint switch COS Class of ServiceCSU Channel Service Unit Dacs Digital Access and Control System Dial Access Switching DDS Digital Data ServiceDS0 Digital Signal DS1 Digital Signal DTE Data Terminal Equipment DSI Digital Speech InterpolationECN Explicit Congestion Notification Fast EIA Frame forwarding Frame Relay ServiceFPC FastPAD Back Card Frame relay connection class FTC FastPAD Trunk Card IGX SwitchFTM FastPAD Trunk Module Gateway Isdn Integrated Services Digital Network IPX SwitchJunction node Junction trunk Major alarm Local alarmMinor alarm Local addressing NPC Network Processor Card Packet switchingNPM Network Processor Module Nrm PBX private branch exchange Partially-interleaved EIAPCM Pulse Code Modulation PCR Peak Cell Rate Remote alarm Red alarmRobbed bit signaling 921/Q.931 RS-449 SAR Segmentation and ReassemblySCC System Clock Card SCM System Clock Module Speech detection SVC switched virtual circuitSplit clock Status Enquiry Trm TimestampTrunk Trunk conditioning VAD Voice Activity Detection Voice Network SwitchingVBR Variable Bit Rate Virtual circuit Cables Yellow alarmCable redundancy Adtf ABR STDASI ATM ESP DlciFbtc FRF.4 Frtt SAM PnniSnmp Spvc TSR TftpVCI VPI Strongly agree Strongly disagree Documentation Response Card 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