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Modem command and data interface
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Application programming interface for modem and ISDN processing
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Apparatus and method for processing multiple telephone calls
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Internetwork zone name filtering with selective placebo zone name substitution in a response to a request for zone name information
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Serial communications interface that supports multiple interface standards
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Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in multicarrier modems
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Method and apparatus for echo cancellation of multicarrier signal
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Method and apparatus for reducing the turn-around time in facsimile transmission
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Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in mulicarrier modems
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Ensemble modem structure for imperfect transmission media
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Multi-channel trellis encoder/decoder
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Ensemble modem structure for imperfect transmission media
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Speech and data multiplexor optimized for use over impaired and bandwidth restricted analog channels
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Ensemble modem structure for imperfect transmission media
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Packetized ensemble modem
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Ensemble modem for telephone digital data transmission method
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Packetized ensemble modem
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Packetized ensemble modem
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Packetized ensemble modem
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