According to published reports, Comcast Interactive Capital (CIC) has invested an undisclosed amount of funds in Boston-area Cartiza Networks, which is a start-up company focused on WiMAX.

According to its Web site, Cartiza is bringing to market an all-IP mobile content delivery system that is designed to provide distributed mobile broadband networking, scalable bandwidth and content management capabilities for voice, data and video. The company said that its integrated platform breaks the “one box-one function” convention to enable flexible and cost-optimized deployments from the airlink through to the core.

The round of venture-capital funding raised a total of $12.6 million, but a Comcast spokeswoman did not provide any additional details on CIC’s investment. In addition to Comcast Interactive Capital, which is the venture arm of Comcast, other investors included Prism Venture Works and the Business Development Bank of Canada.

In May, Comcast and other cable operators announced that they were forming a joint venture with Sprint Nextel, Clearwire, Intel and Google to create a nationwide WiMAX network.

Comcast, which will contribute more than $1 billion to the joint venture, was joined by Time Warner Cable and Bright House Networks when the deal was announced (story here).

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