Wireless startup Altiostar has grabbed another $50 million in funding.

The startup revealed the venture cash fillip in an SEC filing, first reported on by the Boston Business Journal.

Altiostar makes a distributed radio that uses Ethernet for connection between the radios and the controller, which is cheaper than using fiber to connect the nodes. (See Altiostar's C-RAN Steps Into the Light, Junks Dark Fiber.)

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Altiostar's funding now stands at $120 million, and the company currently employs around 200 people.

Cisco Systems Inc. (Nasdaq: CSCO) has put in $50 million of that funding. Kelly Ahuja, senior vice president and general manager of Cisco's mobility business group, sits on the board of the C-RAN vendor. (See Cisco Invests in 4G LTE Startup Altiostar.)

— Dan Jones, Mobile Editor, Light Reading