Establishing a Peer-to-Peer VoIP Call
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4/8/2010
A peer-to-peer VoIP call occurs when two VoIP phones communicate directly over IP without IP PBXs between them. A peer-to-peer call can be initiated directly, by calling a phone’s SIP URI, or indirectly by dialing a phone number. A peer-to-peer call will only be established when a phone number is dialed if both phones share an IP PBX. For an audio call, there is no difference (in end user experience) between a peer-to-peer call and one that uses an IP PBX.
However, peer-to-peer calls become important if callers use features like push-to-talk, video, and mesh-based audio conferencing. The VoIP versions of these features cannot be transmitted over PSTN. The features can only be used in peer-to-peer VoIP calls.
See Also
Concepts
VoIP Technology Overview
VoIP Data Pathways Between Phones
Establishing a VoIP Call through an IP PBX