Paradyne 9720, 9788 manual FrameSaver DSL

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FrameSaver® DSL

Models 9720, 9783, and 9788

User’s Guide

Document No. 9700-A2-GB20-20

December 2002

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Contents FrameSaver DSL Copyright 2002 Paradyne Corporation All rights reserved Contents Configuration Options Configuration ProceduresSecurity and Logins Configuring the FrameSaver DSL RouterDecember Access Levels Command Modes Changing Access LevelsViewing LMI Captured Packets from the User Interface TroubleshootingSnmp MIBs, Traps, and Rmon Alarm Defaults Setting Up Network Health for FrameSaver DeviceMenu Hierarchy Router Command Line Summaries and Shortcuts Router CLI Commands, Codes, and DesignationsConnectors, Cables, and Pin Assignments Index Technical Specifications Equipment ListPurpose and Intended Audience About This GuideDocument Organization Technical Manuals → Technical Glossary Document Number Document Title Product-Related DocumentsNetScout Documentation Concord Communications DocumentationConvention Interpretation Conventions UsedX.x XxxxxxxxxxxxSystem Overview About FrameSaver DSL DevicesCSU/DSU-Specific Features FrameSaver DSL FeaturesRouter-Specific Features About FrameSaver DSL Devices Diagnostic Feature Set Advanced SLM Feature Set Diagnostic Feature SetModel # Product PVCs Advanced SLM Feature Set Access Network Network Configuration ExamplesRemote Site Customer Premises HQ SiteCentral Office Customer Premises AccessOpenLane SLM System OpenLane FeaturesAbout FrameSaver DSL Devices December User and Command Line Interfaces Basic Operation Logging On If your login was ThenEnding a Session ProcedureSelect Main MenuScreen Format Description Screen Work AreasKeyboard Keys Navigating Menu-Driven User Interface ScreensPress Selecting from a Menu Function KeysFor the screen Select Function Press Enter to Selecting a Field for Input Switching Between Screen AreasDevice Name MyDeviceName CLI Keyboard Keys Navigating the Router’s CLI9700-A2-GB20-20 Configuration Procedures Configuration Edit/Display Menu Basic Configuration From the User InterfaceConfiguration Option Area Description Configuration Option AreasMain Menu Configuration Accessing and Displaying Configuration OptionsSaving Configuration Options Changing Configuration OptionsConfiguration PVC Connections Configuration Procedures Configuration Options Configuration Options Main Menu Easy Install Using the Easy Install FeatureEasy Install Screen Easy Install Configuration Options 1 Network 1 DSL Line Rate Mode Easy Install Configuration Options 2Create a Dedicated Network Management Link Ethernet Management Options ScreenNetwork 1 DSL Line Rate Easy Install Configuration Options 3384 784Network 1 Channel Easy Install Configuration Options 4Port-1 Port Type 9788 CSU/DSU Changing the Operating Mode Entering System Information and Setting the System ClockMain Menu Control Change Operating Mode Main Menu Control System InformationConfiguration Option Tables Configuring Frame Relay and LMI for the CSU/DSU Configuring the Overall SystemMain Menu Configuration System Frame Relay and LMI CSU/DSU Frame Relay and LMI Options 2 LMI Error Event N2LMI Clearing Event N3 CSU/DSU Frame Relay and LMI Options 3 LMI Heartbeat T1 Possible Settings 5, 10, 15, 20, 25LMI Status Enquiry N1 Main Menu Configuration System Class of Service Definitions Configuring Class of Service DefinitionsField Setting After RfcCodePoints Selected Class of Svc Name Class of Service DefinitionsMeasure Latency & Availability Code Points AssignedCode Point Definitions Code Point DefinitionsCode Pnt NameMain Menu Configuration System Service Level Verification Configuring Service Level Verification OptionsService Level Verification Options 1 SLV Sample Interval secsSLV Type Available Settings Standard, COS 1-COS Service Level Verification Options 2Dlci Down on SLV Timeout SLV Delivery RatioService Level Verification Options 3 Main Menu Configuration System General Configuring General System OptionsTest Duration min Configuring the Network Physical Interface Configuring Network InterfacesMain Menu Configuration Network Physical Operating Rate Possible Settings AutoRate, 64, 128Network Physical Interface Options Line Rate Mode Possible Settings Hunt, AutoRate, FixedDSL Line Rate Kbps 776, 784, 1544 Line Rate Mode2056 RegionConfiguring Dlci Records for the Network Interface Configuring Frame Relay for the Network InterfaceMain Menu Configuration Network Frame Relay Main Menu Configuration Network Dlci RecordsMain Menu Configuration Network Circuit Records Configuring Circuit Records for the Network Interface 978311. Circuit Records Options 1 Dlci NumberCIR bps 11. Circuit Records Options 29783 0 9788 0 Committed Burst Size Bc BitsExcess Burst Size Be Bits 11. Circuit Records Options 39783 9788 Outbound Management PriorityMain Menu Configuration Network ATM Configuring ATM for the Network Interface 9783Cell Delineation Error Event Threshold Cell Payload ScramblingConfiguring the CSU/DSU’s Data Port Physical Interface Configuring the User Data or Virtual Router PortMain Menu Configuration Data Ports Physical 13. CSU/DSU Data Port Physical Interface Options 1Transmit Clock Source 13. CSU/DSU Data Port Physical Interface Options 2Monitor RTS Control Monitor DTRMain Menu Configuration Data Ports Frame Relay Configuring Frame Relay on the CSU/DSU’s Data Port14. CSU/DSU Frame Relay Options 1 LMI14. CSU/DSU Frame Relay Options 2 Main Menu Configuration Network Dlci Records Data Ports Configuring Dlci RecordsFrame relay interface. Dlci Reserved. Entry of an9720 0 9783 0 9788 0 15. Dlci Records 29720 15. Dlci Records 3Dlci Priority Main Menu Configuration PVC Connections Configuring PVC Connections16. PVC Connections 1 Destination Link 16. PVC Connections 2Destination Dlci Destination EdlciMain Menu Configuration IP Path List Static Configuring the IP Path List17. IP Path List Configuring Node IP Information Setting Up Management and CommunicationManagement Link 18. Node IP Options 1 18. Node IP Options 2 TS Access Management LinkManagement MTU Size Components associated with the deleted PVC? Configuring Management PVCsPayload Managed 19. Management PVC Options 1Set DE 19. Management PVC Options 2Primary Dlci Primary Edlci 19. Management PVC Options 3Primary VPI,VCI Number VPI 0 VCI 32Encapsulation 19. Management PVC Options 4Name 1 Access Configuring General Snmp Management20. General Snmp Management Options 1 Snmp Management20. General Snmp Management Options 2 Name 2 AccessTelnet Login Required Configuring Telnet and/or FTP Sessions21. Telnet and FTP Session Options 1 Telnet Session21. Telnet and FTP Session Options 2 Inactivity TimeoutDisconnect Time Minutes FTP Session21. Telnet and FTP Session Options 3 FTP Login RequiredFTP Max Transfer Rate Kbps 9720 1 9783 1 9788 122. Snmp NMS Security Options 1 Configuring Snmp NMS SecurityNMS IP Validation Number of Managers22. Snmp NMS Security Options 2 Access Type23. Snmp Traps Options 1 Configuring Snmp TrapsSnmp Traps Number of Trap ManagersEnterprise Specific Traps 23. Snmp Traps Options 2Possible Settings Network, Ports, All, None Link Traps Possible Settings Disable, Up, Down, Both23. Snmp Traps Options 3 Link Traps InterfacesRmon Traps 23. Snmp Traps Options 4Latency Traps IP SLV Availability Traps24. Ethernet→Management→Options 1 Configuring Ethernet ManagementStatus Proxy ARP 24. Ethernet Management Options 225. Communication→ Port→Options 1 Configuring the Communication PortPort Use Character Length25. Communication Port Options 2 Login RequiredStop Bits Ignore Control Leads25. Communication Port Options 3 RIP 25. Communication Port Options 4Main Menu Configuration Management and Communication Configuring the COM Port to Support an External ModemExternal Modem Com Port→ 26. External Modem COM Port OptionsConfiguration Options December NAT and Napt Configuration Example Configuring the FrameSaver DSL RouterDSL Network Interface FrameSaver DSL Router OverviewEthernet IP Routing Address Resolution ProtocolProxy ARP Interface Configuration IP Options Processing Network Address TranslationApplications Supported by NAT NAT Mapping Public IP Addresses Private IP Addresses NAT Configuration ExampleSave exit Network Address Port Translation Napt Configuration ExampleNapt Mapping Public IP Address Private IP Addresses Ip nat inside source list 1 interface se 0.x overload Access-list 1 permit 10.1.3.0Int ethernet 0 ip nat inside int serial 0.x ip nat outside Ip nat inside source static 10.1.1.1 NAT and Napt Configuration ExampleDynamic Host Configuration Protocol Server Public IP Addresses for NAT Private IP Addresses Dhcp Server with NAT Configuration ExampleNAT Dhcp Relay Agent Dhcp Server at Remote Site Configuration ExampleIp dhcp server Ip route 155.1.3.254 serial Dhcp Relay Configuration ExampleDhcp LAN DSLIP Router Filtering Bridge Filtering Router SecurityLand Bug Prevention IP FilteringSmurf Attack Prevention NAT DSLVerifying the End-to-End Management Path Diagnostics ATM Ping D-CProvisioning the Router Interface Configuring the Router Using Terminal Emulation Security and Logins FTP Snmp Limiting AccessSet the configuration option Controlling Asynchronous Terminal AccessControlling Telnet and FTP Access Controlling External COM Port Device AccessExternal Modem Com Port See Creating a Login for the User Interface on Limiting Telnet AccessFTP Limiting FTP AccessLimiting Telnet or FTP Access Over the TS Management Link Disabling Snmp Access Controlling Snmp AccessAssigning Snmp Community Names and Access Levels See Configuring→General Snmp →Management in , Configuration Limiting Snmp Access Through IP AddressesAccess Levels Command Modes Controlling Router CLI AccessLargo Page Main Menu Control Administer Logins Creating a Login for the User InterfaceSecurity in , Configuration Options Field EnterDeleting a Login Modifying a LoginExample Operation and Maintenance Main Menu Status Identity Displaying Identity System InformationView this field To find Viewing LEDs and Control Leads Main Menu Status Display LEDs and Control Leads Display LEDs & Control Leads Screen for a 9783 Router LED DescriptionsLED Descriptions 1 Label Indication Color What It MeansLED Descriptions 2 Control Lead DescriptionsNetwork LEDs Port LED CSU/DSUControl Leads Label Indication What It Means Device Messages 1 What It Indicates What To Do Device MessagesSeen at an FTP TerminalSoftware. See Activating Software Device Messages 2 What It Indicates What To DoDevice Messages 3 What It Indicates What To Do See Upgrading System Device Messages 4 What It Indicates What To DoCOM Port usage field Device Messages 5 What It Indicates What To DoCLI Messages 1 What It Indicates Router CLI MessagesMaximumDHCPClients Start-ip-address or end-ip-address CLI Messages 2 What It IndicatesEither pool or interface, and overload are CLI Messages 3 What It IndicatesCLI Messages 4 What It Indicates CLI Messages 5 What It Indicates Status Menu Status InformationSystem and Test Status Messages Last ResetSelf-Test Results Messages Main Menu Status System and Test StatusHealth and Status Messages 1 What It Indicates Health and Status MessagesAtmlink Health and Status Messages 2 What It IndicatesPathIP Address Down InterfaceDLCInnnnTest Status Messages IP Path Connection StatusTest Status Messages What It Indicates Main Menu Status IP Path Connection StatusIP Path Connection Status IP Path Connection Status Screen ExampleFR Link Net1-FR1, Port-1 Frame relay link This is the IP addressPVC Connection Status Screen Example PVC Connection StatusPVC Connection Status Screen 1 Field Display What It IndicatesEdlci PVC Connection Status Screen 2Main Menu Status Network Interface Status Network Interface StatusNetwork Interface Status Screen Example IP Routing Table Screen Example IP Routing Table Management TrafficTTL 11. IP Routing Table Values Field What It IndicatesMain Menu Status Performance Statistics Performance StatisticsPerformance Statistics Menu 13, SLV Performance Statistics for IP Enabled Dlci Service Level Verification Performance StatisticsInbound Dropped Dlci connection COS ID Service Definitions in , Configuration OptionsMain Menu Status Performance Statistics Dlci Dlci Performance Statistics14. Dlci Performance Statistics 1 Field What It Indicates CIR&EIR14. Dlci Performance Statistics 2 Field What It Indicates Additional Performance Statistics for IP Enabled DlciFrame Relay Performance Statistics Frame Relay Errors16. Frame Relay Performance Statistics 1 What It Indicates Frame Relay Link16. Frame Relay Performance Statistics 2 What It Indicates Frame Relay Hdlc ErrorsFrame Relay LMI CSU/DSUs only ATM Performance Statistics 9783 OAM Operations, Administration, and Maintenance17. ATM Performance Statistics What It Indicates AAL5 ATM Adaption LayerMain Menu Status Performance Statistics VCC VCC Performance Statistics 978318. VCC Performance Statistics 1 What It Indicates VCC Virtual Channel Connection18. VCC Performance Statistics 2 What It Indicates Shdsl Line Performance StatisticsMain Menu Status Performance Statistics XDSL Line 19. Shdsl Line Performance Statistics What It IndicatesMain Menu Status Performance Statistics Ethernet Ethernet Performance Statistics20. Ethernet Performance Statistics What It Indicates Function key Main Menu Clearing Performance StatisticsFrame Relay → →EthernetTrap Event Log Screen Example Trap Event LogFTP File Transfers Initiating an FTP Session Command DefinitionIf the message displayed is Then Upgrading System SoftwareActivating Software Determining Whether a Download Is CompletedMain Menu Control Select Software Release If retrieving Then Transferring Collected DataMain Menu Control LMI Packet Capture Utility Troubleshooting Indicators See Problem IndicatorsDevice Messages in , Operation and Maintenance Main Menu Status Display LEDs and Control LEDsResetting the Unit from the Control Menu Resetting the Unit and Restoring CommunicationResetting the Unit By Cycling the Power If selecting Following occurs Restoring Communication with an Improperly Configured UnitLMI Packet Capture Utility Feature Troubleshooting Management Link FeatureMain Menu Control LMI Packet Capture Utility LMI Trace Log Example Viewing LMI Captured Packets from the User InterfaceControl Telnet TelnetTelnet Example Alarm Conditions 1 What It Indicates What To Do AlarmsCSU/DSU only minor Alarm Alarm Conditions 2 What It Indicates What To DoOnly minor alarm IPAddressDown minor alarm Alarm Conditions 3 What It Indicates What To DoPathIP Address Viewing the Trap Event Log Troubleshooting TablesDevice Problems Symptom Possible Cause Solutions Device ProblemsATM Problems Symptom Possible Cause Solutions ATM ProblemsFrame Relay PVC Problems Symptom Possible Cause Solutions Frame Relay PVC ProblemsCSU/DSU Test Menu Example Tests AvailableRouter Test Menu Example Test Timeout Feature Aborting All Tests Starting and Stopping a TestPVC Tests Screen Example PVC TestsSend Pattern PVC LoopbackMain Menu Test Network PVC Tests Main Menu Test Data Port PVC TestsMonitor Pattern When 5 frames out of 25 are missing or out of sequenceTo run a connectivity test on a link Network ATM Loopback Tests Screen Example Network ATM LoopbackFor DTE Loopback Data Port Physical TestsMain Menu Test Data Port Physical Tests On page 8-29 to ping Snmp trap managers Ping Screen Example IP Ping TestTarget IP Address Ping Options 1Source IP Address Response Timeout Inter-Ping DelayPing Options 2 Packet SizePing Responses Field Possible Values Description Main Menu Test IP Ping IP Ping Test ProcedureCentral →site NMS, then select Start Main Menu Test Lamp Test Lamp TestSetting Up OpenLane for FrameSaver Device OpenLane Support of FrameSaver Devices Setting Up the OpenLane SLM SystemSetting Up FrameSaver Support To Find Your License Key Number Ordering Advanced SLM Feature Set ActivationsActivation Certificate Administering and Managing Advanced SLM Activations Checking Activation Certificate Status Entering an Activation CertificateScheduling Activations Accessing and Printing the Certificate Summary Report Canceling Scheduled ActivationsChecking the Status of Scheduled Activations Setting Up OpenLane for FrameSaver Device December Setting Up Network Health for FrameSaver Device Installation and Setup of Network Health Discovering FrameSaver Elements Configuring the Discovered Elements Grouping Elements for Reports Generating Reports for a Group About Service Level ReportsAbout At-a-Glance Reports About Trend Reports Reports Applicable to FrameSaver DevicesPrinted Reports 10-8 FrameSaver SLV Plus At-a-Glance Report 10-910-10 Menus Menu HierarchyFrameSaver DSL CSU/DSUs Menu Structure Change Operating Mode Administer LoginsReset Device SystemVCC FrameSaver DSL Routers Menu StructureVirtual Router Ports Menu Hierarchy December Snmp MIBs, Traps, and Rmon Alarm Defaults Downloading MIBs and Snmp Traps MIB SupportSupport Online Technical Support FrameSaver Unit’s sysDescr system System Group mib-2FrameSaver Unit’s sysObjectID system Paradyne Indexes to the Interface Table ifTable Interfaces Group mib-2Physical Layer Frame Relay Logical LayerRmon Logical Layer NetScout Probe Indexes to the Interface Table ifTableInterface number Dlci number ALLExamples Standards Compliance for Snmp TrapsTrap warmStart Trap authenticationFailureTable B-3. warmStart Trap What It Indicates Possible Cause Variable-BindingTable B-5. linkUp and linkDown Traps What It Indicates Trap linkUp and linkDownPhysical Sublayer Strings‘$ifString $alarmString down.’ ATM Logical Link Sublayer MIBXxx.xxx.xxx.xxx , COS nn Trap enterprise-Specific‘Path xxx.xxx.xxx.xxx Up Nnnn ’Trap RMON-Specific Event Defaults Rmon Alarm and Event DefaultsEventIndex EventDescription EventType Rising Event OperationFrame Relay Link Alarm Defaults Network Physical Interface Alarm DefaultsOID OID Dlci Alarm DefaultsCIR 6.1.2.1.2.2.1 OID Cross-References6.1.2.1.2.10.32.2.1 Dlci CIR 6.1.4.1.1795.2.24.2.6.9.4.1.16.1.4.1.1795.2.24.2.6.9.4 Dlci EIR6.1.4.1.1795.2.24.2.6.9.4.4.2 6.1.4.1.1795.2.24.2.6.9.4.5.2.16.1.4.1.1795.2.24.2.6.9.4.10.3.1 6.1.4.1.1795.2.24.2.6.9.4.7.16.1.2.1.10.32.2.1 6.1.4.1.1795.2.24.2.6.9.4 CLI Commands Router CLI Commands, Codes, DesignationsConvention Translation Interfaces, and Basic Operation, for additional informationRouter CLI Commands, Codes, and Designations Access Control Commands Pager CommandTable C-1. Pager Command Table C-2. Access Control CommandsTable C-3. Configuration Commands Configuration CommandsConfigure terminal factory SaveTable C-4. Interface Commands 1 Interface CommandsCommand Mode config, config-if, config-subif Encapsulation encapsulation-type encapsulation-protocol Table C-4. Interface Commands 2No ip unnumbered null Table C-4. Interface Commands 3No frame-relay interface-dlci dlci-num Table C-5. IP Routing Commands IP Routing CommandsNo ip routing No ip multicast-routingTable C-6. Bridge Commands 1 Bridge CommandsCommand Mode config-if, config-subif Table C-6. Bridge Commands 2No bridge-group bridge-group Table C-7. ARP Commands ARP CommandsArp timeout time No arp timeout time Clear arp-cacheTable C-8. NAT Commands 1 NAT CommandsNo ip nat inside outside Ip nat pool pool-name start-ip-addr end-ip-addr Table C-8. NAT Commands 2Netmask netmask prefix-length / prefix-length No ip nat pool pool-namestart-ip-addr end-ip-addrClear ip nat translation Table C-8. NAT Commands 3From previous Table C-9. Dhcp Server Commands 1 Dhcp Server CommandsNo service dhcp No ip dhcp pool pool-nameDefault-router ip-address No default-router ip-address Table C-9. Dhcp Server Commands 2Domain-name domain-name No domain-name domain-name Dns-server ip-address No dns-server ip-addressNetwork network-num Table C-9. Dhcp Server Commands 3Table C-10. Dhcp Relay Agent Commands Dhcp Relay Agent CommandsNo ip dhcp-server ip-address Table C-11. Filter Commands 1 Filter access-list CommandsAccess-list access-list-numpermit deny No access-list access-list-numpermit denyFor Extended IP Access Lists Table C-11. Filter Commands 2For Protocol Type Access Lists Table C-11. Filter Commands 3No ip access-group access-list-1-199numin out Table C-11. Filter Commands 4Table C-12. Diagnostic Commands 1 Diagnostic CommandsTraceroute protocol dest-ipsource source-ip length bytes Table C-12. Diagnostic Commands 2Table C-13. Show Commands 1 Show CommandsShow configuration Show arpShow configuration saved unsaved Table C-13. Show Commands 2Show frame-relay map Show interface intf-type intf-num .sub-intf-numShow ip dhcp binding ip-address Table C-13. Show Commands 3Show ip nat translations Show ip route ip-addressShow ip traffic Table C-13. Show Commands 4Show spanning-tree Table C-14. Ethernet Type Codes Hex 1 Description Ethernet Type CodesTable C-14. Ethernet Type Codes Hex 2 Description Icmp Designations Protocol and Port DesignationsAll 3 n = Destination unreachable All 5 n = All redirects TCP Port Designations UDP Port Designations CLI Summaries Router Command Line Summaries ShortcutsTable D-1. Show Commands Function Show Command SummaryIntf-type intf-num .sub-intf-num Table D-2. Access Control and System Level Commands Function Access Control and System Level Command SummaryTable D-3. CLI Commands 1 CLI Command SummaryClear counters intf-type intf-num .sub-intf-num Dns-serverip-addressEncapsulation encapsulation-type encapsulation-protocol Table D-3. CLI Commands 2CLI Command Default Settings Connectors, Cables, and Pin Assignments Figure E-1. Model 9720 CSU/DSU Rear Panel Rear PanelsFigure E-4. Model 9783 Router Rear Panel DSL Network Interface and Cable Table E-1. DSL Network Interface Connector Pin # SignalRJ48C Model 9720 and 9788 COM Port Connector Model 9783 COM Port ConnectorEthernet Port Connector Table E-5. Model 9720 and 9783 CSU/DSU Data Port Connector Model 9720 and 9783 CSU/DSU Data Port ConnectorSignal Number Direction Pin Standard V.35 Straight-through CableTable E-6. Model 9788 CSU/DSU Data Port Connector Circuit Model 9788 CSU/DSU Data Port ConnectorSignal Mnemonic Number Direction Pin EIA-530-A-to-V.35 Adapter Signal Plug SocketEIA-530-A-to-X.21 Adapter Enter AT Command To configure the modem to Configuring an External ModemTXD RXD RTS DSR DB25-to-DB25 Crossover CableCD Rlsd RXC DTR Xtxc RXC DTR XtxcPin DB9-to-DB25 Crossover CablePin Connectors, Cables, and Pin Assignments December Technical Specifications COM Port 9720 COM PortDSL Network Interface Ethernet PortEquipment Equipment ListDescription Model Number FrameSaver DSL 9720 CSU/DSUsFrameSaver DSL 9788 CSU/DSUs FrameSaver DSL 9783 DSU/CSUsFrameSaver DSL 9783 Routers FrameSaver SLV UpgradeFrameSaver DSL 9788 Routers NMS Products Optional Housing Mounting Kit FeaturesFor connection to an external device with a DB9 connector Description Part Number Feature NumberCables For use in the U.SEquipment List December Numerics IndexIN-2 COS IN-3IN-4 IN-5 IP SLV IdslIN-7 IN-8 IN-9 PVC Rmon IN-10SLM ShdslSLV IN-12 IN-13 IN-14
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9720, 9788 specifications

The Paradyne 9820-8M, 9788, 9128 standalone, 9128 carrier-mount, and 9820-2M are critical components in telecommunications networks, designed to enhance data transmission and improve connectivity. Each model offers unique features and capabilities that cater to various requirements in both enterprise and service provider environments.

The Paradyne 9820-8M is a multi-service access platform that provides high-speed connectivity for voice, video, and data transmission. It supports multiple protocols, enabling seamless integration into existing infrastructures. Key features include a modular design that allows for scalability and easy upgrades, ensuring that organizations can adapt to evolving demands. Its advanced error correction and QoS (Quality of Service) features ensure reliable performance, even in challenging network conditions.

The Paradyne 9788 serves as a versatile platform for both digital and analog communications. It excels in the delivery of broadband services, supporting T1/E1 lines and providing robust mechanisms for data transmission. This model emphasizes redundancy and resilience, with built-in protection switching capabilities that maintain service continuity during faults or maintenance activities. Its compact design makes it an ideal solution for environments with space constraints.

The 9128 standalone model is aimed at customers requiring an easy-to-deploy solution for point-to-point connections. This model offers critical features such as an intuitive user interface, comprehensive diagnostics, and monitoring capabilities that facilitate system management. It also supports diverse network topologies, making it suitable for various deployment scenarios.

In contrast, the 9128 carrier-mount version is engineered for organizations needing to manage multiple connections within a central office or remote site. This model is specifically designed to be mounted in standard telecom racks, optimizing space utilization while maintaining high performance. Its robust hardware allows for excellent thermal management and environmental resilience.

Lastly, the Paradyne 9820-2M combines versatility with high-performance capabilities, making it a reliable choice for service providers. It features dual-channel support, enabling simultaneous transmission and providing a cost-effective solution for high-capacity data needs. With enhanced security features, including encryption capabilities, the 9820-2M ensures that sensitive information transmitted across networks is protected against unauthorized access.

Collectively, these Paradyne models exemplify advanced telecommunications technology, offering scalability, resilience, and high performance. Their diverse features cater to the unique demands of various users, from enterprise networks to service providers, facilitating the continual evolution of communication technologies.