Cisco Leads Series C Round for RingCentral

San Mateo, Calif.-based RingCentral has raised an undisclosed amount of Series C financing led by Cisco. RingCentral develops a platform for cloud computing-based phone systems, and is also backed Menlo Park, Calif.-based Sequoia Capital, Menlo Park, Calif.-based Khosla Ventures and Palo Alto, Calif.-based DAG Ventures .

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