| 摘要 |
A subscriber connected through a dial up connection to a data communications service is permitted, in accordance with the present invention, to receive notification and control of incoming voice telephone calls attempted to the same subscriber telephone line being utilized in the dial up connection. A Message Transfer Point (MTP), connected to both the the public switched telephone network (PSTN) and the data communications network of the data communications service (DCS), interfaces to both the calling and called parties. The MTP controls the processing of incoming voice telephone calls from the caller and transfers information between the voice caller and the data communications subscriber. The MTP accepts input from the caller in the form of touch-tone entries and audio messages in addition to accepting messages in the form of computer input from the data communications subscriber. The MTP interfaces the voice caller to the data communications subscriber by answering and processing calls intended for the data communications subscriber while the telephone line of the data communications subscriber's telephone line is in an off-hook state.
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