Infonetics Research released its second quarter 2011 (2Q11) Enterprise Unified Communication, VoIP, and TDM Equipment vendor market share report, led by VoIP and IMS analyst Diane Myers.

"The top enterprise telephony vendors remain in a tight battle to gain new customers and hold onto existing ones as enterprises migrate to IP and unified communications solutions. For the third quarter in a row, Avaya came out on top in the overall PBX market, with about a quarter of worldwide revenue in the second quarter of 2011, helped by steady shipments and healthy average selling prices. Cisco maintains its strong second position despite a slight lead in overall line shipments," notes Diane Myers, directing analyst for VoIP and IMS at Infonetics Research.

PBX AND UC MARKET HIGHLIGHTS

• Global PBX/KTS phone system revenue declined 2.3% sequentially in 2Q11 to $2.02 billion, but is up 3.9% from a year ago (2Q10), continuing its path of slow and steady recovery on year-over-year basis
• Unified Communications revenue increased 2.3% sequentially in 2Q11 to $112.4 million on the strength of Microsoft UC solutions that continue to gain in deployments worldwide
• Aastra, Mitel and ShoreTel are the only vendors posting positive PBX revenue gains in 2Q11 over 1Q11
• The PBX market in Asia Pacific is proving resilient amidst the turmoil and sequential ups and downs of other regions, with four straight quarters of sequential PBX revenue growth
• PBX revenue in Asia Pacific is up 29% year-over-year (2Q11 vs. 2Q10)
• Meanwhile, the economic situation in North America and EMEA continues to assert pressure on the enterprise telephony segment, particularly at the lower end of the market, as businesses in both regions are slow to add employees and are generally holding off on upgrades
• Pure IP PBXs, the fastest growing segment, saw line shipments grow 10.6% over 2Q10