How do Voice over IP audio conferences work?
Audio conferencing using Voice over IP (VoIP) works very similarly to a traditional conference call using analog telephones. In a conference call, callers connect to a conference bridge, a server that allows multiple people to talk to one another. VoIP audio conferences use the same principle — callers connect to a conference bridge via their telephones or computers. The main difference involves how the data moves from one point to another. Traditional telephones use circuit switching. For circuit-switched conferencing, the telephone system routes calls through a series of interconnected switches until it reaches the conference bridge. The conference bridge then connects multiple calls to one another. If all of the callers are located in the same office building, their calls connect to the bridge through the private branch exchange (PBX), which is a