| 摘要 |
A card-type voice mail system, connected to a key telephone system, includes: a key telephone system interface connected to a universal slot of the key telephone system for interfacing with the key telephone system; a codec for digitizing analog data received through the key telephone system interface from the key telephone system, and for converting the digitized data into analog data to supply the analog data to the key telephone system through the key telephone system interface; a voice mail card for compressing data digitized from the codec, and for restoring the compressed data to supply the restored data to the codec; a storage device for storing data compressed from the voice mail card, and for supplying the stored data to the voice mail card; a memory for loading a universal operating system; and a controller for controlling the overall operation of the card-type voice mail system according to the universal operating system.
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