“Global Tel-Link Corp. is one of two corrections phone companies that dominate the national $1.2 billion per year industry. It paid the Hampden County department $725,000 for phone calls to and from all its facilities between July 2016 and June 2017, according to records supplied by the department. Phone calls to and from the women's jail during that same period netted the department $110,000. “
San Francisco Chronicle
February 4, 2019