The market is down 15% overall, compared to the third quarter of 2010. Session border controllers (SBC) are an exception, with global revenue up 13%, reflecting a continued shift to all-IP networks.
The growth of VoIP subscribers in fixed and mobile networks, SIP trunking and IP interconnectivity will continue to be important drivers for VoIP equipment.
The standout region of the quarter is Central and Latin America, which posted a 14% increase in carrier VoIP equipment revenue in Q3 2011.
"Seasonally, Q3 tends to be a weak one for the market, and no vendor is immune to the challenges of delayed orders and shifts in technology choices," said Diane Myers, analyst for VoIP at Infonetics Research.
