A system and method for providing a telecommunication device wake-up (TWU) so vital communication, including but not limited to, priority and emergency calls, can be delivered to a telecommunications device that is turned from its normal "On-mode", to a "Listening Mode" (LM). Telecommunication device wake-up (TWU) is crucial. Important and emergency calls need to be completed regardless of the status of a Telecommunication User's (TU's) communication and/or telephony device--"off" or "on". The method comprises a system in which a telecommunication device (TD) can employ a Listening Mode (LM) that will process vital communication and then turn on said telecommunication device (TD) so as to facilitate vital communication.