The deal was valued at $230 million with Radvision shareholders entitled to $11.85 per share in cash.
Radvision will operate as an indirect, wholly owned subsidiary of Avaya.
Thanks to the acquisition, Avaya said it's now poised to deliver video collaboration solutions that are suitable for any business. The company said it and Radvision will build on the interoperability that exists between the two portfolios to extend video collaboration inside and outside of the enterprise.
"The acquisition of Radvision is an important milestone in Avaya's transformation to what we believe is the industry's first open, interoperable collaboration platform for business," Avaya President and CEO Kevin J. Kennedy said in a statement. "As a result of the transaction, Avaya customers can reap the benefits of richer, simplified video collaboration regardless of what system they're currently using."
Avaya and Radvision will demonstrate their suite of video collaboration solutions next week at InfoComm 2012 in Las Vegas.