Specifications

Theportslabeled"NetworkClock,""10BaseT,""DialShelf
Interconnect,""Console,"and"Alarms"aresafetyextralowvoltage
(SELV)circuits.SELVcircuitsshouldonlybeconnectedtootherSELV
circuits.BecausetheE1/T1circuitsaretreatedliketelephonenetwork
voltage,avoidconnectingtheSELVcircuittothetelephonenetwork
voltage(TNV)circuits.
CT1TrunkCardCablesandPinouts
OneinterfacecablesisavailablefromCiscoSystemsforconnecting
theCT1cardports;thecableisdescribedin.
Table5
CableDescription ProductNumber
RJ45toBare,100ohm CABT1RJ45BARE
CT1InterfaceCables
TheshowstheCT1interfacecable,anddescribesthepinoutsforthe
CT1interfacecable.
Figure7RJ45toBareWireInterfaceCable
Table6
RJ45
Pin Signal Description Direction Bare
Shield Ground Braid  
J11 RXTip TwistedPair
#1
<— WIRE
1
J12 RXRing TwistedPair
#1
<— WIRE
2
J13 RX
Shield
  
J14 TXTip TwistedPair
#2
—> WIRE
3
J15 TXRing TwistedPair
#2
—> WIRE
4
J16 TX
Shield
  
RJ45toBareCablePinouts
CE1TrunkCardCablesandPinouts
SeveninterfacecablesareavailablefromCiscoSystemsfor
connectingtheCE1cardports;thesecablesandtheirproduct
numbersarelistedin.
Table7
CableDescription ProductNumber
RJ45toRJ45,120ohm CABE1RJ45RJ45
RJ45toDB15,120ohm CABE1RJ45DB15
RJ45toDB15Null,120ohm CABE1RJ45DB15N
RJ45toBNC,75ohm CABE1RJ45BNC
RJ45toTwinax,75ohm CABE1RJ45TWIN
RJ45toRJ45TE,120ohm CABE1RJ45TE
RJ45toRJ45NT,120ohm CABE1RJ45NT
CE1InterfaceCables
Thefollowingfiguresandtablesillustrateanddescribethepinoutsfor
eachCE1interfacecable: