Radwin 2000 - What RADWIN MHS Provides

RADWIN2000UserManual Release2.8.30 15‐2
WhatRADWINMHSprovides
RADWINMHSprovidesredundancyandbackuptoTDMservices.Itisdesignedtoprovide
highreliabilityhigh‐capacityPoint‐to‐Pointlinks.TheRADWINMHSis‐
• Designedtoprovideredundancyandhighreliabilityforcarrierclassoperators
• Optimizedforhighcapacitylinksoperatinginlicense‐freebands
• Acomprehensivesolutionprovidingprotectionagainstbothequipment failureandloss
ofairinterface,bysimpleconnectivitybetweenaprimarylinkandasecondarylink
ThemainserviceredundancyfeaturesoftheRADWINMHSare–
• TDMservicecut‐overfromtheprimarytothesecondarylinkiscompletelyautomatic
• TDMservicecut‐overtimenomorethan50ms
• Automaticrestoretoprimarylinkassoonasitbecomesavailable
• SupportforuptosixteenTDMchannelsforRADWIN2000
MHSissupportedbetweentwoRADWIN2000linksusingIDU‐Cs.Inwhatfollows,ODUrefers
toaRADWIN2000radioandIDUreferstoanIDU‐C.
WhatRADWINMHSprovides
EquipmentProtection
Equipmentprotectionisprovidedfortheelectrically‐activenetworkelements,ODUandIDU.
TheprimaryIDUandthesecondaryIDUare connectedbyacabletomonitorfailureandto
controlprotectionswitching.Switchingtimeislessthan50ms.
Air‐InterfaceProtection
Air‐InterfaceprotectionisuniquetoRADWINandisoptimizedforwirelesslinksoperatingin
license‐freebands.
Theprimarylinkandthesecondarylinkusedifferentfrequencychannels.Iftheair‐interface
oftheprimarylinkisdisturbedandcannotcarrytherequiredTDMservice,thenthesystem
automaticallyswitchestothesecondarylink.
Inaddition,improvedrobustnessandfrequencyplanningflexibilityisachieved,asthe
primaryandsecondaryairinterfacescanoperateinthesamefrequencybandorindifferent
frequencybands.
AutomaticChannelSelection(ACS)canbeconfiguredforeachlinktoaddadditional
robustness.
TheprimaryandsecondarylinksaresynchronizedusingHubSiteSynchronization(HSS).
ItisrecommendedthatbothsitesbeinstalledwithHSScables.IfHSSfailsatonesite,itcan
beoperatedfromtheothersitebyremoteconfiguration.