Acid-catalyzed positive resist compositions which are imageable with 193 nm radiation andor possibly other radiation and are developable to form resist structures of improved development characteristics and improved etch resistance are enabled by the use of resist compositions containing imaging polymer having a 2-cyano acrylic monomer. The sender compares previously stored recipient information to gathered information from the recipient. The different frequencies of the servo windows allow the servo frame to achieve improved positioning information redundancy. The device also has multiple serial switching means, multiple shorting links and a control means. Thus, SMS messages are offloaded from the voice network to the broadband data network.