A tool for engaging a telecommunications connector within a slot so that a releasable latch of the connector is released by the tool. The telephone device includes computer section connected to telephone operation section via a predetermined interface, computer section including an operating system for a personal computer or a PDA to install an IP softphone that performs communication according to the Internet Protocol, and providing a communication and phone call function via the IP softphone. The resulting PDFs are convolved to arrive at a total PDF indicative of the reception of data subject to each of these non-idealities. The method is used to deposit advanced thin films at a high quality and at a high deposition rate. The format of the digital image signal is converted into a predetermined format used in a digital camera, and the digital image signal in the predetermined format is recorded on a recording medium which can be loaded in the digital camera. Due to a charging and discharging ability of the capacitances, the device functions as a voltage and current buffer to protect built-in units against unstable operation and serious damages caused by instantaneous start-on of too many built-in units at the same time or overly high instantaneous power of the built-in units in use.