Cisco AS5800 Specifications download pdf (Page 5)

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

reference.EachCT1orCE1trunkcardcansupplytwoclocksfrom

anytwoofitstwelveports.Youcanassignprioritiestothese

clocks,oracceptthedefaultvaluesassignedbythesoftware.

Defaultvaluesforclockingarebasedonthefollowingparameters:

(a) Portsareprioritizedfrom011.Theportwiththe

lowestnumberhasthehighestpriority.

(b) Slotsareprioritizedfromslot0toslot5.Thelowest

slotnumberhasthehighestpriority.

(c) Clocksareprioritizedbyslotnumber.Thehighest

priorityclockisselectedfromthecardinslot0.Ifthis

clockfails,thehighestpriorityclockfromthecardin

slot1becomesthedefaultclock,andsoforth.

Thetrunkcardthenforwardstheclockstothedialshelfcontroller.

Thedialshelfcontrollerselectsthehighestpriorityclockasthe

systemprimaryclock,andtherestoftheclocksremainina

prioritizedbackupqueue.

Insteadofusingthedefaultalgorithmforclockselection,youcan

specifyclocksthroughconfiguration.Youconfiguretheclocks

globally,andcanselectamaximumoftwoclockspertrunkcard.

Forexample,ifyouinstallthreetrunkcards,youcanconfigureup

tosixclocks.(Whiletwotrunkcardsaresufficienttogivefull

coveragetotenmodemcards,youcanhaveuptosixtrunkcards

seatedinslots0through5foramaximumselectionoftwelve

clocks.)

Ifyouconfigurefewerthantwoclocksonatrunkcardandallother

configuredclocksfail,theclockselectionwillresorttothedefault

algorithmonthatcardandthesecondclockwillbeselected

automatically.

• Processcountinginformationforperformancemonitoring

• Supportonlineinsertionandremoval(OIR)

ThetrunkcardsupportsOIR,afeaturethatallowsyoutoremove

andreplacetrunkcardsintheCisco5814dialshelfwhilethe

systemisoperatingwithoutdisruptingothercardsandtheir

associatedcalls.Ifyouremoveatrunkcardwhilethesystemis

operating,allcallsassociatedwiththe12E1orT1linesonthat

cardaredropped.Callsbeinghandledbyothertrunkormodem

cards,however,arenotaffected.

showstwotrunkcardsinstalledinafullyconfiguredCisco5814dial

shelfchassis.

Figure4Cisco5814DialShelfChassisFullyConfiguredwithTrunk

CardsInstalled

LEDIndicators

TheCT1andCE1trunkcardfrontpanelisdesignedwithLED

indicatorsandaliquidcrystaldisplay(LCD)toprovidetrunkcard

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Cisco AS5800 Specifications Page 5

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