Editorial Note: We earn a commission from partner links on Forbes Advisor. Commissions do not affect our editors' opinions or evaluations. A private branch exchange (PBX) is a telephone system that ...

If you’re thinking about replacing or upgrading your business phone system, you have an important choice to make. Do you want to use a Voice over IP (VoIP) or a Private Branch Exchange (PBX) service?

REDWOOD CITY, Calif. — Line shipments for IP private branch exchange (PBX) are on the rise in 2003, increasing 17% in the second quarter to reach 1.8 million lines, according to a new report released ...

Evolution or revolution? That’s the big decision to make as you move down the convergence path toward voice over IP to the desktop. Established PBX vendors such as Nortel Networks are marshalling a ...

And Cisco reasserted its dominance, re-taking a solid lead over the post-Nortel-acquisition version of Avaya. Perhaps the only civil thing to be said for the 2009 PBX market in North America is it ...

COLORADO SPRINGS, Colo. — The Asia-Pacific region is outpacing North America and Europe in the growth of PBX lines, Dell'Oro Group said in its quarterly report on IP telephony. While North America ...

The report also found that worldwide TDM system revenue fell 11% while IP PBX revenue inched up 1% between the fourth quarter of 2005 and the first quarter of 2006. The combined worldwide revenue for ...

The new platform, dubbed OmniPCX Enterprise, evolved from and succeeds Alcatel's OmniPCX 4400 IP PBX line. Like its predecessor, OmniPCX Enterprise supports a mix of analog, digital and IP phones, and ...