An intelligent telephone network provides personalized communication services based on a voice identification of the subscriber. Specifically, when a person requests a service, the network executes a speech processing operation, to identify the person or a party that the person is calling as a known subscriber. One or more switching offices of the network utilize profile data associated with the identified subscriber to control services. The personalized service applies both to incoming and outgoing calls. The network can provide the personalized services to several subscribers sharing a common line. For incoming calls to such a line, the network executes an interactive procedure to determine from the caller which subscriber she is calling. If the line is free, the switch applies distinctive ringing. If the line is in use, the switch uses the profile of the identified subscriber to provide a distinctive call waiting tone or a voice message over the line. The tone or voice message indicates to the party using the line that there is a call waiting and specifically identifies the called subscriber. For outgoing calls, the network utilizes a voice verification procedure to identify the actual subscriber. The subscriber's profile controls network processing of the call, including the provision of personal subscriber identification for caller ID, both on ringing calls and with call waiting alert signals.