Up-grading method for transmission apparatus
An up-grading method for a transmission apparatus including at least one low-speed side interface device, at least one high-speed side interface device, and a cross connection or add/drop MUX device which has at least one of a function of multiplexing a signal from the low-speed side interface devic...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
11.07.2000
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Abstract | An up-grading method for a transmission apparatus including at least one low-speed side interface device, at least one high-speed side interface device, and a cross connection or add/drop MUX device which has at least one of a function of multiplexing a signal from the low-speed side interface device to connect the multiplexed signal to the high-speed side interface device, a function of distributing a signal from the high-speed side interface device to the low-speed side interface device, and a function of establishing physical and logical signal paths between any low-speed side and any high-speed side interface devices. When the transmission speed of the high-speed side interface device is to be increased, a high-speed transmission apparatus having thereon an interface device having a higher interface speed, a cross connection or add/drop MUX device, a clock signal distributing device and a control device is newly connected to the cross connection or add/drop MUX device of the existing transmission apparatus, the high-speed side interface device of the existing transmission apparatus is replaced by a low-speed side interface device, the cross connection or add/drop MUX device of the existing transmission apparatus is interconnected to the newly added high-speed transmission apparatus, and the existing transmission apparatus is used as an exclusive apparatus for accommodation of low-speed side interfaces. |
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AbstractList | An up-grading method for a transmission apparatus including at least one low-speed side interface device, at least one high-speed side interface device, and a cross connection or add/drop MUX device which has at least one of a function of multiplexing a signal from the low-speed side interface device to connect the multiplexed signal to the high-speed side interface device, a function of distributing a signal from the high-speed side interface device to the low-speed side interface device, and a function of establishing physical and logical signal paths between any low-speed side and any high-speed side interface devices. When the transmission speed of the high-speed side interface device is to be increased, a high-speed transmission apparatus having thereon an interface device having a higher interface speed, a cross connection or add/drop MUX device, a clock signal distributing device and a control device is newly connected to the cross connection or add/drop MUX device of the existing transmission apparatus, the high-speed side interface device of the existing transmission apparatus is replaced by a low-speed side interface device, the cross connection or add/drop MUX device of the existing transmission apparatus is interconnected to the newly added high-speed transmission apparatus, and the existing transmission apparatus is used as an exclusive apparatus for accommodation of low-speed side interfaces. |
Author | INADA; MANABU ITOH; NORIKO SUGIOKA; TETSUYA |
Author_xml | – fullname: ITOH; NORIKO – fullname: SUGIOKA; TETSUYA – fullname: INADA; MANABU |
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Notes | Application Number: US19960626999 |
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Snippet | An up-grading method for a transmission apparatus including at least one low-speed side interface device, at least one high-speed side interface device, and a... |
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SubjectTerms | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MULTIPLEX COMMUNICATION |
Title | Up-grading method for transmission apparatus |
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