3-2 Features3 Features and ServicesThe words "System Programming" and "Classof Service" will be frequently seen in thischapter and define the settings done by theSystem Administrator via data terminal.These settings can be partly done by theSystem Manager from a touch-tone telephone.S.A.Shows the pages to be referred to by the Sys-tem Administrator to set the feature (service).S.M.Shows the pages for the System Manager’sreference to set the feature (service).M.M.Shows the pages to be referred to by the Mes-sage Manager to use or set the feature (service).SubscriberShows the pages to be referred to by theSubscriber to use or set the feature (service).ConditionsShows the conditions that must be satisfiedto use the feature (service). Some features(services) can only be used exclusively andsome require special setting before use.Before Reading This ChapterIn this chapter important features and services about the VPS are described in the followingformat.Feature Ref.Shows the master feature (service) of thefeature (service).DescriptionDescribes the function of the feature (service)briefly.MoreInformationShows the features (services) to be referredto when you want to use the feature moreefficiently and effectively. Each headlineshows the name of the feature (service) sothat you can look it up in Chapter 3 byheadline.Reply to Message SenderFeature Ref. Receive MessageReceive MessageDescription The Subscriber can listen tothe messages left in hisSubscriber’s mailbox.MoreInformation• Reply to Message SenderAfter listening, you can reply
