Abstract: An asynchronous time division communication system having at least one station including a buffer and an associated processor for writing data packets into said buffer at a sending clock frequency, and for reading data packets from said buffer at a receiving clock frequency. The processor is further capable of assessing the real packet filling level of the buffer and adjusting the receiving clock frequency in corresponding relationship to the assessed real packet filling level. The processor calculates a mean packet filling level after a measured time has elapsed by using the mean of m successively assessed real packet filling levels of said buffer and using the calculated mean packet filling level for adjusting the receiving clock frequency.

Abstract: A system for providing remote services and maintenance functions includes a voice subsystem adapted to receive voice and DTMF signals that can be used to control the execution of a plurality of service and maintenance tests. The system also includes a programmed control subsystem that provides voice based response and conveyance of results of such maintenance services and tests to field personnel.

Abstract: An ultraviolet lamp provides radiation in the 240 to 313 millimicron range for polymerizing photosensitive inks. Accurate quantities of metals and halides are provided by introducing stable gaseous organic compounds of the halogens and reacting the organic compounds with the desired metals to produce their halides.