In a telephony system have management of telephony devices distributed among multiple call management devices, the call management devices use call redirection and relaying of message waiting indications to provide voicemail services to the telephony devices using a centralized voicemail server. The mold is particularly well-suited for use in an injection molding machine. If the reference clock input signal frequency is not within the permitted range, the apparatus sends a tamper alert to the chip or to a system, and the output clock signal frequency is not changed according to the reference clock input signal frequency, thereby protecting the chip from erroneous or tampered clock signal. Sixth shaft is connected to ring of first set, carrier of second set and ring of fourth set. The top side of the flexographic printing plate substrate is exposed to UV-A radiation.