... can delete the calling number by the button on the screen.6.Call service -- in Hotel,Motel,Restaurant,Dining hall , ... .Payment: T/T .Western union .Paypal.EscrowWarranty:12 MonthsFAQApplicationsWireless calling system can be used in restaurants, hotels, hospitals, tea house, ... pool, beach, etcWhat are the components of the wireless calling system?1. Wireless receiver, installed on the count 2. Call ...