Nortel has bought Pingtel, the developer of a software-based unified communications system.

Pingtel is owned by Bluesocket, a developer of enterprise mobility products. Pingtel will provide new SIP-based software capabilities to Nortel's enterprise unified communications portfolio, as well as additional research and development capabilities.

Pingtel and Nortel had an existing OEM relationship, but the acquisition gives Nortel ownership of the Pingtel technology and furthers the company's ambitions to become more software-centric.

"We believe that bringing Pingtel's critical R&D capabilities in-house will enable us to further develop software-based solutions that go beyond the boundaries of our previous OEM relationship," said David Downing, Nortel general manager, Enterprise and SMB Communications Systems.

Nortel will use the Pingtel software to deliver unified communications products to enterprise customers of all segments. In the near term, Pingtel will bring software elements to Nortel's Software Communication System 500 (SCS 500) unified communications system for small to mid-sized businesses.

SCS 500 integrates email, instant messaging and conferencing with business applications.