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An electronic mail system having integrated voice messages
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PBX telephone call control system
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Call processing system with facsimile processing
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Adaptive efficient single/dual tone decoder apparatus and method for identifying call-progression signals
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Apparatus and method for identifying speech and call-progression signals
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Integrated application controlled call processing and messaging system
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Interface to and operation of a voice messaging system
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Electronic audio communications system with voice authentication features
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Electronic audio communications system with voice command features
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Method and apparatus for checking the integrity of a communications channel in a voice store and forward system
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Analog information receiving, storing and feeding method andelectronic communication message system
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Information receiving, storing and feeding method and electronic communication message system
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Electronic audio communication system with user controlled message address
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Electronic audio communication system with user controlled message address
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Electronic audio communications system with versatile user accessibility
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Electronic audio communications system with user accessible message groups
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Electronic audio communications system with automatic user access features
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Electronic audio communications system with versatile message delivery
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System for electronic audio communication
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