Unless you pay the phone bills for a company like Walmart Stores Inc. or CVS Caremark Corp., you’ve probably never heard of Granite Telecommunications LLC. But this Quincy-based company is on track to rake in $850 million in revenue this year by consolidating and managing telephone services for many of America’s biggest businesses. Globe reporter Hiawatha Bray recently spoke with Granite chief executive Rob Hale.
On the Hot Seat
Meeting the telecom demands of big business
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