Emulation of analog modem signaling over IDSN for translation-less interoperability with PSTN based H.324 system
First Claim
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1. A system for translationless videoconferencing interoperability between an analog modem based node and an Integrated Services Digital Network (ISDN) node comprising:
- a first videoconferencing engine coupled to said ISDN node, said first videoconferencing engine generating videoconferencing data according to an analog modem videoconferencing protocol; and
a modem emulator coupled to said first videoconferencing engine, said modem emulator configured to model said videoconferencing data as analog modem data interpretable by said analog modem based node, said analog modem based node incapable of ISDN communication, said ISDN node incapable of analog modem based communication.
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Abstract
What is disclosed is a system for translationless videoconferencing interoperability between an analog modem based node and an Integrated Services Digital Network (ISDN) node having a videoconferencing engine coupled to the ISDN node, the videoconferencing engine generating videoconferencing data according to an analog modem protocol. Further the system has a modem emulator coupled to the videoconferencing engine, the modem emulator configured to model said data as analog modem data interpretable by the analog modem based node.
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Citations
15 Claims
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1. A system for translationless videoconferencing interoperability between an analog modem based node and an Integrated Services Digital Network (ISDN) node comprising:
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a first videoconferencing engine coupled to said ISDN node, said first videoconferencing engine generating videoconferencing data according to an analog modem videoconferencing protocol; and a modem emulator coupled to said first videoconferencing engine, said modem emulator configured to model said videoconferencing data as analog modem data interpretable by said analog modem based node, said analog modem based node incapable of ISDN communication, said ISDN node incapable of analog modem based communication. - View Dependent Claims (2, 3, 4, 5)
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6. A method for translationless videoconferencing interoperability between an analog modem based node and a ISDN based node comprising the steps of:
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receiving a first set of signals from said analog modem based node on said ISDN based node, said first set of signals compatible with an analog modem videoconferencing protocol; generating on said ISDN based node a second set of signals from said first set of signals, said second set of signals resembling analog modem data; and generating on said ISDN based node a third set of signals from said second set of signals, said third set of signals characteristic of videoconferencing information. - View Dependent Claims (7, 8)
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9. A method for translationless videoconferencing interoperability between an analog modem based node and a ISDN based node comprising the steps of:
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generating on said ISDN based system a first set of signals characteristic of videoconferencing information, said first set compatible with an analog modem videoconferencing protocol; modeling said first set of signals into a second set of signals, said second set of signals encoded as analog modem signals; and transmitting from said ISDN based node to said analog modem based node a third set of signals, said third set of signals sampled digitally from said second set of signals. - View Dependent Claims (10)
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11. A modem emulator for coupling to an ISDN device, said emulator comprising:
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a UART module; a receiver module coupled to said UART module, said receiver module configured to receive samples from said ISDN device and generate a first set of data transfer blocks, said first set of data transfer blocks passed to said UART module; a transmitter module coupled to said UART module and said ISDN device, said transmitter module configured to receive a second set of data transfer blocks from said UART module and to generate analog-modem compatible data in the form of digital samples, said ISDN device having no analog modem capability. - View Dependent Claims (12, 13, 14)
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15. ISDN-based computer system comprising:
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a memory configured to store a first set of instructions corresponding to a videoconferencing engine and to store a second set of instructions corresponding to performing the function of a modem emulator; and a processor coupled to said memory, said processor configured execute said first set of instructions and said second set of instructions, said processor further configured to provide and interpret videoconferencing information to and from an analog modem based computer system, said first and second set of instructions modeling said videoconferencing information in analog form, and sampling said modeled information digitally for use by the ISDN device of said systems.
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Specification