BEVERLY HILLS, CA— A $67.5 million service agreement has been reached between Hilton Hotels Corp. and AT&T, by which AT&T will expand Hilton’s secure, high-speed, wide area network technology that integrates voice, data and Internet services. With the help of AT&T’s enhancements, the network will allow Hilton’s enterprisewide technology, OnQ, to provide identical views of guest information to approximately 150,000 staff members working across six brands in 2,100 hotels and in the reservations department and the customer service center.