Axis A8207-VE - Page 16

AXISA8207-VEMkIINetworkVideoDoorStation
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SIP
1
UseragentA-doorstation.SIPaddress:sip:192.168.1.101
2
UseragentB-SIP-enabledphone.SIPaddress:sip:192.168.1.100
YoucansetuptheAxisdoorstationtocallforexampleaSIP-enabledphoneonthesamenetworkusingapeer-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
1
sip:mydoor@company.com
2
sip:myspeaker@company.com
3
PBX PBX
PBX
sip.company.com
4
sip:ofce@company.com
WhenyoupressthecallbuttononanAxisdoorstation,thecallisforwardedthroughoneormorePBXstoaSIPaddresseitheronthe
localIPnetworkorovertheinternet.
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