Abstract: A computer program product includes computer readable program code embodied on a computer readable storage medium. The computer program product include computer readable program code for receiving input from a user of a first communication device identifying a second communication device and initiating a call to the second communication device, computer readable program code for receiving further input from the user of the first communication device indicating that an incoming call from the identified second communication device is an urgent call, and computer readable program code for, in response to receiving the further input from the user of the first communication device, blocking any incoming call that is not identified as an urgent call.

Abstract: A computer program product includes computer readable program code embodied on a computer readable storage medium. The computer program product include computer readable program code for receiving input from a user of a first communication device identifying a second communication device and initiating a call to the second communication device, computer readable program code for receiving further input from the user of the first communication device indicating that an incoming call from the identified second communication device is an urgent call, and computer readable program code for, in response to receiving the further input from the user of the first communication device, blocking any incoming call that is not identified as an urgent call is blocked.

Abstract: A method includes receiving input from a user of a first communication device, the input identifying a second communication device and initiating a call to the second communication device. Further input is received from the user of the first communication device indicating that an incoming call from the identified second communication device is an urgent call. In response to receiving the further input from the user of the first communication device, any incoming call that is not identified as an urgent call is blocked.

Abstract: A method of printing on a sheet of paper comprises drawing a first sheet of paper from a first paper source into a printer having an optical scanner and a print head, scanning a first face of the first sheet to determine the presence or absence of print thereon. In response to detecting print on the first face, the print head is caused to print an obstruction on the first face. In response to detecting no print on the first face, the print head is caused to print new matter on the first face. The method enables a printer to accept used paper while eliminating confusion over which face contains the new matter.

Abstract: Redundant power delivery including a power cable comprising a first plug including contacts for hot, neutral, and ground and a plurality of power lines, each power line electrically connected independently to the hot, neutral, and ground contacts of the first plug at a first end and each power line having a second plug at a second end providing contacts for hot, neutral, and ground; a selectable redundant power module, the selectable redundant power module comprising a plurality of input connectors, each input connector comprising a hot, neutral, and ground contacts and adapted to engage each second plug of each power line; and a switch to select one or more of the input connectors of the selectable redundant power module for receiving power.

Abstract: A method of printing on a sheet of paper comprises drawing a first sheet of paper from a first paper source into a printer having an optical scanner and a print head, scanning a first face of the first sheet to determine the presence or absence of print thereon. In response to detecting print on the first face, the print head is caused to print an obstruction on the first face. In response to detecting no print on the first face, the print head is caused to print new matter on the first face. The method enables a printer to accept used paper while eliminating confusion over which face contains the new matter.

Abstract: Redundant power delivery including a power cable comprising a first plug including contacts for hot, neutral, and ground and a plurality of power lines, each power line electrically connected independently to the hot, neutral, and ground contacts of the first plug at a first end and each power line having a second plug at a second end providing contacts for hot, neutral, and ground; a selectable redundant power module, the selectable redundant power module comprising a plurality of input connectors, each input connector comprising a hot, neutral, and ground contacts and adapted to engage each second plug of each power line; and a switch to select one or more of the input connectors of the selectable redundant power module for receiving power.