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Chapter4–ConfiguringYourMultiVOIP
38 MultiVOIP®Voice/FaxoverIPGateways
Ethernet/IPParameterDefinitions(continued)
FieldName Values Description
DiffServ
Parameter
fields
DiffServPHB(PerHopBehavior)valuespertaintoadifferentialprioritizingsystemforIPpacketsashandledby
DiffServ‐compatiblerouters.Thereare64values,eachwithanelaboratetechnicaldescription.These
descriptionsarefoundinTCP/IPstandardsRFC2474,RFC2597,and,forpresentpurposes,inRFC3246,which
describesthevalue34(34decimal;22hex)forAssuredForwardingbehavior(defaultforCallControlPHB)and
thevalue46(46decimal;2Ehexadecimal)forExpeditedForwardingbehavior(defaultforVOIPMediaPHB).
Beforeusingvaluesotherthanthesedefaultvaluesof34and46,consultthese
standardsdocumentsand/ora
qualifiedIPtelecommunicationsengineer.
TodisableDiffServ,configurebothfieldsto0decimal.
CallControlPHB 0–63
default=34
ValueisusedtoprioritizecallsetupIPpackets.
Settingthisparameterto0,alongwithVOIPMediaPHBbelowdisablesDiffServ.
VOIPMediaPHB 0–63
default=46
ValueisusedtoprioritizetheRTP/RTCPaudioIPpackets.
Settingthisparameterto0,alongwithCallControlPHBabovedisablesDiffServ.
FTPParameterfields
FTPServer
Enable
Y/N
Default=
disabled
See“FTPServer
FileTransfers”
inChapter6
MultiVOIPunithasanFTPServerfunctionsothatfirmwareandotherimportantoperating
softwarefilescanbetransferredtotheVOIPviathenetwork.
DNSParameterfields
EnableDNS Y/N
Default=
disabled
EnablesDomainNameSpace/Systemfunctionwherecomputernamesareresolvedusinga
worldwidedistributeddatabase.
EnableSRV Y/N Enables‘servicerecord’function.ServicerecordisacategoryofdataintheInternetDomain
NameSystemspecifyinginformationonavailableserversforaspecificprotocolanddomain,
asdefinedinRFC2782.NewerinternetprotocolslikeSIP,STUN,H.323,POP3,andXMPP
mayrequireSRVsupportfromclients.Clientimplementationsofolderprotocols,likeLDAP
andSMTP,mayhavebeenenhancedinsomesettingstosupportSRV.
DNSServerIP
Address
n.n.n.n IPaddressofspecificDNSservertobeusedtoresolveInternetcomputernames.