User's Manual Part 1

Table Of Contents

SystemDescription

Remote Gateway (RGW)

TheRGWisasmallunitsimilartotheBGWbutintendedforsmallsystemswherethereareonlyafewremotesor

wherethereisnoheadend.TheRGWhasaformfactorthatallowsittobemountedinsidearepeatercasing.

TheRGWcanbeuse

dtorunupto4RemoteUnitsfromasingleRepeateronasingleFiber.TheRGWhasthe

capabilitytoconnectnorthboundtoaCGW,justliketheBGW,anditcanalsoforwardalarmsthroughaVPNtunnel

toaCGW.

Thememoryca

cityandfeaturesarereducedcomparedtotheBGWbutforasmallsystemwithasinglefiberthis

isanoption.

Inremotelo

cationswithoutEthernet,theRGWcanbeequippedwithamodemtoallowremoteaccesstothe

system.Typicallya3GmodemisusedallowingaVPNtunnelfromtheRGWtoaCGW,enab lingsupervision,

monitoringandcontrolofthesystem.

Headend

Theheadendconsistsofa19‐inchrackwithmodulesthatareselecteddependingonthesystemdesign.Generallyall

headendUnitscontain:

 Networkswitch‐connectscommunicationpathsbetweenthemodules

 InterconnectUnit(ICU)‐RFsplitter/combiner(rack‐mountunitormoduleintheMFU)

 MasterFrameUnit(MFU),maycontainsomeorallofthefollowing:

Powersupply

Ba

seStationInterfaceUnit(BIU)

Fiber‐OpticInterfacecard(FOI)

Repeater

ICU

ADHCPser

verbu

iltintotheRGWandBGWwillassignIPaddressestoalltheheadendsubunitsintherackandthe

RemoteUnitswhentheyareconnectedtothesystem.Theconfigurationisautomaticandcreatesaprotectedsub‐

netforthesystem.

DCS - Network Switch

ThenetworkswitchisanACpowered,24‐portswitchwithSpanningTreeProtocol(STP).Thenetworkswitch

providesanEthernetlinkbetweentheMFUandtheBGW.EachcardslotintheMFUhasadedicatedEthernetport,

eachportisconnectedtothenetworkswitchandthenetworkswitchisconnectedtoth

eBGW.

ADCpoweredopt

ionisalsoavailable.



Actualnetworkswitchmaybe

differentfromtheimage.