Cook County Board President Toni Preckwinkle is calling on the jail to stop a phone service that charges inmates $15 for 15-minute calls. Preckwinkle's office said the agreement for the $15 calls did not go through her office. She's recommending that the county discontinue what she calls a side deal which that Sheriff Tom Dart made with Securus Technologies, the company that has an exclusive deal at the jail.