144 MultiVOIP®Voice/FaxoverIPGateways
Appendix B – TCP/UDP Port
Assignments
WellKnownPortNumbers
ThefollowingdescriptionofportnumberassignmentsforInternetProtocol(IP)communicationistakenfrom
theInternetAssignedNumbersAuthority(IANA)website(www.iana.org).
“TheWellKnownPortsareassignedbytheIANAandonmostsystemscanonlybeusedbysystem(orroot)
processesorbyprogramsexecutedby
privilegedusers.PortsareusedintheTCP[RFC793]tonametheends
oflogicalconnectionswhichcarrylongtermconversations.Forthepurposeofprovidingservicesto
unknowncallers,aservicecontactportisdefined.Thislistspecifiestheportusedbytheserverprocessasits
contactport.
Thecontactportissometimescall edthe"well‐knownport".Totheextentpossible,these
sameportassignmentsareusedwiththeUDP[RFC768].TherangeforassignedportsmanagedbytheIANA
is0‐1023.”
Thefollowingtabledescribeswell‐knownportnumbers relevanttoMultiVOIPoperation.
PortNumberAssignmentList
Function PortNumber
telnet 23
tftp 69
snmp 161
snmptray 162
gatekeeperregistration 1719
H.323 1720
SIP 5060
SysLog 514