Specifications

SIPPhones
A VoIP phone system requires the use of SIP phones. These phones are based on the Session
InitiationProtocol(SIP),anindustrystandardtowhichallmodernIPPBXssystemsadhereto.The
SIPprotocoldefineshowcallsshouldbeestablishedandisspecifiedinRFC3261.SIPallowsthe
possibilitytomixandmatchIPPBXsoftware,phonesandgateways.Thisprotectsyourinvestment
inphonehardware.SIPphonesareavailableinseveralversions/types:
Software(based)SIPphones

3CXPhoneforWindows(left),3CXPhoneforMac(right)
A software based SIP phone is a program which makes use of your computer's microphone and
speakers,oranattachedheadsettoallowyoutomakeorreceivecalls.ExamplesofsoftwareSIP
phonesare3CXPhoneorXLitefromCounterpath.
Hardware(based)SIPPhones
 

HardwareIPPhones:snom760left,YealinkT46(withsidecar)right
Hardware based SIP phones look and behave like a normal phones. They are actually mini
computers that connect directly to the computer network. They have an integrated mini hub,
allowing them to share a network connection point with a computer, eliminating the need for an
additionalnetworkpointforthephone.