BOSTON--XConnect has agreed to acquire IPeerX, the two voice-over-IP peering companies announced today.

The two companies allow VoIP providers to exchange call traffic that is based on various protocols, such as session initiation protocol and H.323.

The acquisition expands XConnect’s membership to about 300 service providers in 30 countries and more than 8 million VoIP numbers, with another 120 million numbers registered for future use.

IPeerX will become a wholly owned subsidiary of XConnect in an integration process the two companies hope will be completed within the next three months.

Eli Katz, XConnect’s chief executive officer, called the union one more step toward a world in which all voice communications are IP-based.

As three-year-old IPeerX is owned by Pulver.com Enterprises, Jeff Pulver, the founder and CEO of Pulver.com Enterprises, will join XConnect’s advisory board. Pulver.com also owns the VON trade show at which the deal was announced.

IPeerX President Kingsley Hill will head XConnect’s Strategic Federation Development activities. His role, as Hill himself put it, will be “bringing VoIP carriers of individual nations together with the rest of the world.”