Cisco Systems 8600 Series specs

Card Operation

Figure 6-5 SMF-622-2, SMFLR-622-2, and SMFXLR-622-2 Back Card

SMF 622-2

H9891

BXM T3/E3, 155, and 622 6-13

Image 143

Cisco Systems 8600 Series manual SMF-622-2, SMFLR-622-2, and SMFXLR-622-2 Back Card

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 C BPX Switch Peripherals Appendix a BPX Node SpecificationsAppendix B BPX Switch Cabling Summary 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 Related DocumentationConventions Conventions Xxx Cisco BPX 8600 Series Reference BPX Capabilities IntroductionGeneral Description 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 Additional Information Service InterworkingTiered Networks 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 Traffic and Congestion ManagementFairShare Cost-Based AutoRoute OptiClassAutoRoute Congestion Management, ForeSight Congestion Management, VS/VD Network Management Network ManagementNetwork Interfaces Node Synchronization Service InterfacesStatistical Alarms and Network Statistics Connections and Connection Routing Switch Software DescriptionSwitch Software Description 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 Redundancy Switch AvailabilityNode Alarms Switch Availability Switch Availability 26Cisco BPX 8600 Series Reference Physical Description BPX Switch EnclosureGeneral 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 and Complex Gateway Formats Simple GatewayComplex Gateway, Frame Relay to ATM Network Interworking BPX Switch Plug-In Card Summary Card Name Where BPX Switch Major GroupsBPX Switch Major Groups LM-2OC3-SMFLR BMESmfxlr LM-2OC3-SMF 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 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 Connector Indicator Function Line Module for the Alarm/Status Monitor CardLM-ASM Face Plate Connectors 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 Network Interface Trunk Cards BPX Switch Network Interface GroupBXM Cards, Trunk Mode Summary 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 BXM Cards, Port UNI Mode Summary Service Interface Line CardsBPX Switch Service Interface Group 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 Dynamic Resource Partitioning for SPVCsBXM Cards 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 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 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 BXM Connections Standard ABR notesVsvd Description ATM Connection Requirements ATM Connection RequirementsForeSight Congestion Control Field Value Description Addcon Command SyntaxConnection Routing 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 RDF ICRRIF 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 Connections ABR NotesABR and Atfst 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 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 ATM and Frame Relay SVCs and SPVCs PVCs and SVCsPVCs SPVCs SVCs BPX Switch and ESP Interfaces BPX Switch and ESP InterfacesInterim Inter-switch Protocol Routing Signaling Plane Signaling PlaneUNI Signaling Channel UNI Signaling Channels NNI Signaling Channel Network Interworking Between Frame Relay and ATM Network Interworking Between Frame Relay and ATM ESP Interfaces Extended Services ProcessorExtended Services Processor Redundant ESPs Stand-Alone ESP ESP Y-Cable Redundancy Cable Redundancy Other Redundancy Options Resource Partitioning Introduction Tag Switching Tag Switching Benefits Tag Switching BenefitsTag Switching Overview Forwarding Elements in a Tag Switching NetworkTag Switching Operation at Layer Elements in a Tag Switching Network Control Tag Switching in an ATM WANTag Switching in an ATM WAN 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 RequirementsList of Terms Related Documents Configuration ManagementRelated 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 10 e 0 65536 95 100 Cnfqbin 4.1 Enable/disable eDspqbin 4.1 Addshelf 4.1 vsi 1 Tsc# show controllers VSI descriptor Checking and TroubleshootingChecking and Troubleshooting Dspnode Dsptrks Dsprsrc 4.1 Tsc# sho tag tdp disc Tsc# show tag intTsc# reload Provisioning and Managing Connections Provisioning and Managing ConnectionsStatistics Command Reference Command ReferenceBPX Switch Commands TSC Commands Attributes Related CommandsAddshelf Syntax Example for Tag Switching Description for Tag Switching Addshelf 11.1 a Description for Interface ShelvesExample for Interface Shelves Example Related Commands dspqbin Parameters-cnfqbinBPX switch Cnfqbin Cnfqbin 4.1 10 e 0 65536 95 100 Description Parameter cnfrsrc Description Related Commands Parameters-cnfrsrcCnfrsrc 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 N1x Unallocated Min z1 + n1x, max M1x LCNs Total Lcns available toPort VSI Partition = 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 Dspnode BPX switch, IGX switch YesDspnode 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 OperationBME Cell Replication Group Group Action CommandCell Replication Stats Adding Connections Multicast Statistics Multi-Segment Multicast Connections OAM cells AlarmsAlarms Policing AIS cells Hot Standby BackupHot Standby Backup Configuration ConfigurationConnection Diagnostics 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 a Front Card Replacing PartsReplacing Parts 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 Layers ATM Protocol StackATM Protocol Stack 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 Dspalms Dspcon Dspport Tstconseg Tstdly DiagnosticsOAM Cell Support User Commands Virtual Circuit Features Management AUser CommandsManagement User Interface RoutingBandwidth Management Alarms Signaling BPX and IGX Routing Hubs Tiered NetworksRouting Hubs and Interface Shelves Tiered Network with BPX and IGX Routing Hubs Routing Hubs and Interface Shelves BPX Routing Hubs in a Tiered Network BPX Routing Hubs in a Tiered NetworkTiered Network Implementation Definitions UpgradesGeneral Network Management Co-locating Routing Hubs and Interface Shelves Local and Remote Loopbacks IPX Interface Shelf DescriptionForeSight Preferred Routing Interface Shelf Management Configuration and ManagementAlarm Management of Interface Shelf on the BPX Hub Node 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 MIB II SupportResponses to Set Requests Cisco WAN Switching Proprietary MIB Structure Cisco WAN Switching Proprietary MIB StructureSwitch Service Objects Switch Connections Endpoint Mapping Bandwidth ClassEndpoint Statistics 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 SMF IR TX SMF IR RX SMF LR TX SMF LR RX ATM Trunk Interface BXM-622 CardsATM Trunk Interface BXM-622 Cards 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-2T3ATM Service Interface ASI-1, LM-2E3 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 LM-BCC Cabling External Clock Input CablingT1 Clock 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 LM-BCC TBS Redundancy Y CableTable B-19 Redundancy Y-Cables Used On Cisco P/N Redundancy Y Cable Cisco StrataView Plus Terminal Control Port, Local Control BPX Switch Peripherals Printer DIP Switch Settings for OkidataTable C-3 Switch a Settings-Okidata 184 Printer Description Printer Table C-4 Switch 1 Settings-Okidata 184 Printer DescriptionTable C-5 Switch 2 Settings-Okidata 184 Printer Description 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\T3 AT\JAT\Q1 8Cisco BPX 8600 Series Reference Application AT3-6ME Interface Adapter Equipment Description Interface ConnectorsEquipment Description DB9 Table D-1 Rear Panel Connectors Type DescriptionT3 RX BNC T3 TX BNC FT2 DIP SwitchesTable D-2 Front Panel Indicators Color Description FT2 Front and Rear Panel Table D-3 DIP Switch SW-1 Selection Guide Position Function InstallationAT3-6ME Configuration Installation Operation BPX, IGX, or IPX Port ConfigurationPower-Up Sequence Operation Normal OperationRemote Loop Operation Terminal Operation Table D-7 Command Summary Parameters Meaning CommandsTable D-6 DIP Switch Settings 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 Cable redundancy Yellow alarmCables 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