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Bsc6900description

-TheBSC6900GSMsubrac

isclassifiedintotheMPS,EPS,andTCS.TheMPSandtheEPSaregenerallycalledthebasicmodule(BM),andtheTCSiscalledtranscoder(TC)forshort

1Mpseoprimeirosubrac

dbaixoparasima-TheMPSperformscentralizedswitchingandprovidestrafficpathsforothersubrac

s.Italsoprovidestheserviceprocessinginterface,OMinterface,andsystemcloc

interface

Eps0-3-TheEPSperformsthefunctionsofuserplaneprocessingandsignalingcontrol

Tcs-0-4-TheTCSprocessesCSservicesbyperformingthefunctionsofvoiceadaptationandcodeconversion

TheTCSisconfiguredintheTCRonlyinBM/TCseparatedmode

-Table2-3HardwareversionanditscorrespondingboardsHardware

VersionCorrespondingBoardHW69R13OMUc,SCUb,TNUa,GCGa,GCUa,DPUf,DPUg,XPUb,EIUa,FG2c,GOUc,OIUa,PEUa,POUc

OMBoards_OMUc-Handlesconfigurationmanagement,performancemanagement,faultmanagement,securitymanagement,andloadingmanagementfortheBSC6900.?Wor

sastheOMagentfortheLMT/M2000toprovidetheBSC6900OMinterfacefortheLMT/M2000,thusachievingthecommunicationbetweentheBSC6900andtheLMT/M2000.?Wor

sastheinterfacetoprovideweb-basedonlinehelp.

Differences:TheOMUcboardoccupiesonlyoneslotandsupportsoneharddis

.

SWITCHINGPROCESSINGBOARD-SCUb-ProvidesMAC/GEswitchingandenablestheconvergenceofATMandIPnetwor

s.?Providesdataswitchingchannels.?ProvidesBSC-levelorsubrac

-levelconfigurationandmaintenance.?Distributescloc

signalsfortheBSC6900.Differences:TheswitchingcapabilityoftheSCUbboardisfourtimesthatoftheSCUaboard.

-TNUa-ProvidesTDMswitchingandservesasthecenterinthecircuit

switcheddomain.?AssignsresourcesoftheTDMnetwor

andprovidespathsfornetwor

establishmentwithintheBSC6900.?HandlescommunicationprocessingontheGEport.

CLOCKPROCESSINGBOARD-GCUa-Obtainsthesystemcloc

source,performsthefunctionsofphase-loc

andholdover,andprovidescloc

signals.Differences:Unli

etheGCUaboard,theGCGaboardcanreceiveandprocesstheGPSsignals.

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SERVICEPROCESSING-DPUf-HandlesGSMspeechcodinganddecoding,convertsthespeechframeformatovertheIPspeechchannel,andprocessesspeechservicesinthesystem.Differences:TheprocessingcapabilityoftheDPUfboardistwicethatoftheDPUcboard.

-DPUg-ProcessesGSMdataservices.TheprocessingcapabilityoftheDPUgboardisthesameasthatoftheDPUdboard.

SIGNALINGPROCESSINGBOARD-XPUb-Managesuserplaneandsignalingplaneresourcesinthesubrac

andprocessessignaling.Differences:TheprocessingcapabilityoftheXPUbboardis75%to100%higherthanthatoftheXPUaboard.

INTERFACEPROCESSINGBOARD-EIUa-?Provides32E1s/T1s.?Transmits,receives,encodes,anddecodesthe32E1s/T1s.TheE1transmissionrateis2.048Mbit/s,andtheT1transmissionrateis1.544Mbit/s.

-FG2c-?Provides12channelsoverFEelectricalportsor4channelsoverGEelectricalports.?SupportsIPoverFE/GE.

-GOUc-?ProvidesfourchannelsoverGEopticalports.?SupportsIPoverGE.

_OIUa-?ProvidesonechannelovertheSTM-1opticalport.?ProvidesonechannelizedSTM-1withtherateof155.52Mbit/s

-PEUa-?Provides32channelsinIPoverE1/T1mode.?Provides32E1s/T1sinGboverFRmode.?Extractsthecloc

signalsandsendsthesignalstotheGCUaboard.

-POUc-?ProvidesfourchannelsoverthechannelizedopticalSTM-1/OC-3portsbasedonIP/TDMprotocols,equivalentto252E1sor336T1s.?Extractsthecloc

signalsandsendsthesignalstotheGCUa/GCGaboard.