Axis 01796-001 - Page 17

AXISC1310-ENetworkHornSpeaker
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SIP
sip:192.168.1.101 sip:192.168.1.100
YoucansetupaSIP-enabledphonetocallanaudiodeviceonthesamenetworkusingapeer-to-peerSIPsetup.
PrivateBranchExchange(PBX)
WhenyoumakeSIPcallsoutsideyourlocalIPnetwork,aPrivateBranchExchange(PBX)canactasacentralhub.Themain
componentofaPBXisaSIPserver,whichisalsoreferredtoasaSIPproxyoraregistrar.APBXworkslikeatraditionalswitchboard,
showingtheclient'scurrentstatusandallowingforexamplecalltransfers,voicemail,andredirections.
ThePBXSIPservercanbesetupasalocalentityoroffsite.Itcanbehostedonanintranetorbyathirdpartyprovider.Whenyou
makeSIPcallsbetweennetworks,callsareroutedthroughasetofPBXs,thatquerythelocationoftheSIPaddresstobereached.
EachSIPuseragentregisterswiththePBX,andcanthenreachtheothersbydialingthecorrectextension.AtypicalSIPaddressin
thiscasewouldbesip:<user>@<domain>orsip:<user>@<registrar-ip>.TheSIPaddressisindependentofitsIP
addressandthePBXmakesthedeviceaccessibleaslongasitisregisteredtothePBX.
Example
SIP
SIP
SIP
sip:myspeaker@company.com
PBX
sip.company.com
sip:office@company.com
sip:myspeaker@company.com
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