Sumeru Equity Partners has acquired a controlling ownership stake in Telesoft, provider of software for managing corporate mobile and fixed-line communications services and billing. Telesoft founder Thierry Zerbib and members of the company’s management team have also invested in the company.

Telesoft, based in Phoenix, sells software that tracks and manages billing and usage for corporate mobile, fixed, IP and cloud lines and devices. With the transaction, Kevin Donoghue was appointed CEO and Brian Martin as chief operating officer. Zerbib will continue to oversee the company’s technology, taking on the chief technology officer role. With the Sumeru investment, Telesoft will spend more on new product development, adding new customers and adding employees, Zerbib says. The company has more than 200 corporate and government clients.

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