European Radio Message System; its architecture is composed of a network access, network controller, a paging area controller (PAC) and a pager, üldkasutatav isikuotsingu süsteem

European Radio Message System; its architecture is composed of a network access, network controller, a paging area controller (PAC) and a pager, üldkasutatav isikuotsingu süsteem

European Radio Message System; its architecture is composed of a network access, network controller, a paging area controller (PAC) and a pager, üldkasutatav isikuotsingu süsteem