PRIVATE COMMUNICATION UNIT
PROBLEM TO BE SOLVED: To provide a private communication unit in which high speed data communication of VDSL and telephone can coexist even for a leased line in an enterprise while avoiding such a situation as the VDSL communication is disabled by crosstalk of the harmonics of carrier frequency of D...
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| Main Author | |
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| Format | Patent |
| Language | English |
| Published |
15.07.2004
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| Edition | 7 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | PROBLEM TO BE SOLVED: To provide a private communication unit in which high speed data communication of VDSL and telephone can coexist even for a leased line in an enterprise while avoiding such a situation as the VDSL communication is disabled by crosstalk of the harmonics of carrier frequency of DPT. SOLUTION: The private communication unit 31 performing voice transmission and data transmission by means of a digital telephone for extension and VDSL comprises a section 36 for detecting the harmonic level of carrier of the digital telephone for extension, and a section 35 for automatically regulating the center frequency of VDSL depending on the detected harmonic level of carrier. COPYRIGHT: (C)2004,JPO&NCIPI |
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| AbstractList | PROBLEM TO BE SOLVED: To provide a private communication unit in which high speed data communication of VDSL and telephone can coexist even for a leased line in an enterprise while avoiding such a situation as the VDSL communication is disabled by crosstalk of the harmonics of carrier frequency of DPT. SOLUTION: The private communication unit 31 performing voice transmission and data transmission by means of a digital telephone for extension and VDSL comprises a section 36 for detecting the harmonic level of carrier of the digital telephone for extension, and a section 35 for automatically regulating the center frequency of VDSL depending on the detected harmonic level of carrier. COPYRIGHT: (C)2004,JPO&NCIPI |
| Author | MOTOKI ATSUSHI |
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| RelatedCompanies | MATSUSHITA ELECTRIC IND CO LTD |
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| Snippet | PROBLEM TO BE SOLVED: To provide a private communication unit in which high speed data communication of VDSL and telephone can coexist even for a leased line... |
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| SubjectTerms | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY SELECTING |
| Title | PRIVATE COMMUNICATION UNIT |
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