The UC market reaches its highest growth rate since 2008 in Q3 2010, Dell'Oro says. 

The market expands 7% sequentially as strong seasonal quarters from larger vendors offset weakness in Europe. 

Dell'Oro believes the UC market will continue expanding in 2010, despite pockets of weakness. Vendors will continue investing and expanding their offerings while Microsoft actively pushes Lync. 

Vendors will also continue migrating their installed base over to IP lines-- a process that may take another decade to complete. 

The top 8 vendors-- Aastra, Alcatel-Lucent, Avaya, Cisco, mitel, NEC, Shoretel, and Siemens-- account for 80% of IP line shipments. 

Go Unified Communications Market Has Strongest Quarter Since 2008