Zhone Technologies Network Device Switch, Bi-directional Default Routing, Alternate Routing

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Zhone Technologies, Inc.	IMACS Product Book, Version 4

Bi-directional Default Routing

Bi-directional Default Routing is provided for automatic routing when a node is configured with two Primary Rate D channels as shown in Figure 29. In two channel systems, the user does not have to configure any routing information, as all calls received on one D channel are automatically routed to the second D channel. The user only needs to enter routing information for those calls destined to a local HSU or FXS ports.

HSU/FXS

D ch 1

IMACS

ISDN

Switch

D ch 2

PBX

Default

Figure 29—Bi-Directional Default Routing

Alternate Routing

Alternate routing is provided for calls to take an alternate path in the event of a congested or failed primary trunk. When there are more than two Primary Rate D channels, phone numbers can be assigned to more than one D channel. Calls placed or routed through the PRI server will now have an alternate route if no bandwidth is available on the first specified path. Alternate routing will also take place in the event of a failure of the first Primary Rate circuit. In the example shown in Figure 30, the call from D1 is usually routed to D2, as the D channel numbering is more specific. However, if the D2 trunk become congested or go out of service, the call will be routed to D3.

ISDN

Switch

Dial 415 - 6xxx

D1

PBX

IMACS

415-6xxx

D2

ISDN

D3Switch

415-xxxx

Figure 30—Alternate Routing

March 2001

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Contents Imacs Product Book Intentionally Left Blank Table of Contents Management Channel Concentrator MCC Imacs System Testing and DiagnosticsSection Title Server Cards Internet Protocol Router Low-Bit Rate Voice ServerImacs Product Overview Imacs Features and Benefits CPU WAN Imacs Architecture OverviewWAN Imacs System Bus ArchitectureUser Buses WAN BusesCPU Card Server BusesCard Type Summary Interface CardData Card Power Supply RedundancyVoice Card Server CardAdpcm Redundancy CPU Card RedundancyWAN Card Redundancy System Synchronization and ClockingImacs System Management MCC MIBFrame Relay NetworkT1/E1 Frame Relay Imacs Management Using FDL/SA4Router Each FDL is mapped to a separate DS0 FDL over ESFImacs 38.4 kbps Slip Terminal Server Concentrator Node Page M card with 2713 Hz Loop back Module# Imacs 800 Universal Enclosure-Front View Imacs 800 Universal EnclosureImacs 800 Universal Enclosure-Rear View Imacs 900 Universal EnclosureImacs 900 Universal Enclosure Imacs 600 Front Load EnclosurePhysical and Environmental Characteristics Imacs Dimensions Chassis Height Width Depth ModelImacs Minimum Clearances 600 800 900 Power SuppliesImacs Compliance With Regulatory Standards Model 8903 Power Supply 120 VAC Model 8908 Power Supply, 105/240 VAC Model 8905 Power Supply, 120/240 VACRing Generator Page CPU Cards Code Storage LED IndicatorsOperational Modes Maximum number of WAN linksInterface Cards Page YES Interface Card SpecificationsWAN Ports Node Port EIA RS232-C DOC CS03Page HDB3 T1 Signal FormatE1 Signal Format Performance and Test OptionsWAN Card Hardware Specifications Etsi ETRForeign Exchange Station FXS Card Specification Short Loop Long LoopVF Transmission PCM Coding CharacteristicsForeign Exchange Office FXO Card Transhybrid LossVF Transmission Characteristics M Card Delay Specification Phone Station and Office Line Cards Universal Imacs P-Phone ApplicationVoice Transmission Status IndicatorsSubscriber and Central Office Interface-Transmit Channel Sealing Current Source 2W Port CharacteristicsKHz Signaling Specifications Sealing Current SinkVoice Channel Bank Application TR-008 ApplicationImacs Using TR-008 T1-E1 ConversionImacs Data Modules and Applications Data Card Types Type of Card DescriptionData Card Types Page CAD/CAM HSU CardApplications Imacs and HSU Application ExamplePoint to MultiPoint One-Way Video and Audio Using HSUs Dial Capability Performance StatisticsSRU Card Imacs Asynchronous Data SignalingSynchronous Data Standards CompatibilityFrad Card Imacs w/ Frad Imacs Frad Card ApplicationModel 823160 Frad Card Frad Card SpecificationsDiagnostics DlciOCU-DP Card OCU-DP Card ModelsPage OCU-DP Specifications Model Number Number of Ports Physical InterfacesBRI Card Imacs BRI Terminal Extension ApplicationImacs BRI Card In a Leased Line or Idsl Application BRI Card ModelsPage Model 8262 manual settings Remote NTU Configuration OptionsProcedural Characteristics Software Configurable OptionsDesign Standards for Model BRI Card SpecificationsOff or On per port Models 826361 and 826171 only Lult LuntImacs Using the 822860 For Network Management BnR IP Concentrator CardOptions port B7R IP Concentrator Card Specifications External PortsPortMaster Integrated Office Router PM-IOR Internal PortsUDP, Icmp Technical SpecificationsTCP/IP, IPX Alarm Cards Ports 840160 840260 840360 Alarm Card Specifications Model 840160, 840260Adpcm Voice Compression Server Model 8403 BuzzerPBX-to-PBX Trunk Application T1/E1Automatic Call Distribution Application BRI-U BRI-STImacs In a Wireless Base Station Application Wireless Base Station ApplicationAdpcm Server Card Specifications Isdn Primary Rate Interface PRI ServerNfas Non-Facility Associated Signaling Remote LoginCustomer 1 10B+D 7B+D Switch 23B+D on T1 30B+D on E1 Customer 3 5B+DFractional PRI Provisioning Isdn Video Conferencing and Video BroadcastCodec Video T1/E1 Integrated Isdn Access with SinaVideo Dialing Data Backup and Bandwidth on Demand25bis/DTR Dialing RouterPRI to FXS Termination Routing Capabilities Call Routing Local RoutingBi-directional Default Routing SwitchDefault Alternate RoutingManagement Channel Concentrator MCC Server Dpnss Trunk RoutingMCC In a Multilevel Concentration Application ACS-FRS Advanced Communication Server Frame Relay Server Frame Relay Server SpecificationsFECN, Becn Frame Relay Access and Concentration Server Frame Relay Switch Port SavingsImacs Using Frame Relay Server Cards Frame Relay and Internet Service ProvisioningFrame Relay and Internet Services Using IMACS’ Frad Server Idsl Service ProvisioningIdsl Service Provisioning Grooming and Concentration in Cellular NetworksMobile Base Station Mobile Switch Office Channelized DS1s = 96 DS0sFrame Switch Frame Relay DS1sFrame Relay Concentration at Corporate Headquarters Legacy Adaptation to ATM Migrating Legacy Networks to ATM Interactive Distance Learning/Tele-MedicineATM Server Specifications Interactive Distance Learning ApplicationON/OFF ATM Server Card SpecificationsATM I/F CBR, VBRSnmp Support Internet Protocol RouterMaximum Byte Size Standards SupportIPR-2 Uses of IPRApplication Ethernet LAN IPR-3Bundled Service Deployment Private Intranet DeploymentPrivate Intranet Deployment Using IP Routing Server Card IP Routing Server SpecificationsUNI DCE, UNI DTE, NNI IP Routing Server Card SpecificationsMTU Call Center Application Lbrv In a Call Center Application Backhauling Voice ApplicationCentral VoiceMail Server T1/E1 Extending Voice Access ApplicationSwitch T1/E1 NX64K Leased Line T1/E1Imacs System Parameters Password ProtectionLetter Meaning Port Status SummaryImacs Diagnostic Capabilities Status and Alarm Management Integral Test CapabilitiesIn-Band Loop back Code Generation WAN DiagnosticsBit Error Rate Tester Bert Patterns Supported In-Band Loop back Code DetectionBert Direction Voice DiagnosticsDiagnostic Capabilities of Voice Ports Statistics Gathered By BertDiagnostic Capabilities of Data Ports Data DiagnosticsControl Lead Handling Singaling Systems Equipped With Cross-Connect OptionData 64Kbps Nx64Kbp Toward WAN1 Yes Toward WAN2Bert Direction Voice Single Data Super-rate Without Data Singaling64Kbps Nx64Kbp Tones Supported Voice Single Data Super-rate WithoutBenefits of Built-In Diagnostics Toward WAN Voice Single Data Super-rate WithoutBuilt-In Diagnostics Example Imacs Performance Monitoring T1 Line Performance MonitoringATM Performance Monitoring DDS Line Performance MonitoringFrame Relay Performance Monitoring Conclusion