Cisco AS5800 Spécifications télécharger pdf (Page 4)

CT1andCE1TrunkCardOverview

ChannelizedingressinterfacesresideoneitherCT1orCE1trunk

cardsthatareinstalledintheCisco5814dialshelf.ACT1orCE1trunk

cardcontainsallnecessaryfunctionalitytoterminateincoming

telephonecalls.Thechannelizedtrunkcardisconfiguredinthefactory

foreitherT1orE1framing,dependingonyourorder.

showstheCT1andCE1trunkcardcomponents.

Figure3CT1andCE1TrunkCard

TheCT1andCE1trunkcardsperformthefollowingfunctions:

• Terminateupto12T1or12E1lines

TheCE1trunkcardprovidesphysicalterminationforupto12E1

linesandconnectstoanexternalnetworktermination(NT1)

device,whiletheCT1trunkcardprovidesphysicalterminationfor

upto12T1/PrimaryRateInterface(PRI)lines,includeschannel

serviceunits(CSUs),andconnectsdirectlytothetelconetwork.

• DemultiplexDS0s

Aframerremovesframingandembeddedsignalingbits(orinserts

themdependingonthedirectionoftheflow),andtheframerCPU

sendsthedatastreamtoonboardtimedivisionmultiplexing(TDM)

resources,whichbreakouteachcall(DS0)andpasseachcallto

anappropriatecallterminationresource.DigitalorISDN

originatedcallsareterminatedonboardtheCT1orCE1trunkcard

onHighlevelDataLinkControl(HDLC)controllers,andanalog

modemoriginatedcallsarepassedoverthedialshelfbackplane

TDMbustoanavailablemodemresource.Thesystemsoftware

controlsmodemandHDLCresourcemanagement.

• Respondtotimesensitivesignaling

EachindividualT1orE1portcanbeusedasthesystemclocking

1 2 3 4 5 6 7 8 9 ... 21 22

Pas de commentaire

Cisco AS5800 Spécifications Page 4