Customer premises optical network unit
An optical line terminal and residential technology, which is applied to the selection device of the multiplexing system, the selection device, and the data exchange through the path configuration, etc., can solve the problems of a large amount of time for evaluation and testing, and it is difficult for the user side to understand the abnormal communication state, etc. To achieve the effect of improving maintainability
Active Publication Date: 2010-07-07
FURUKAWA ELECTRIC CO LTD
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Problems solved by technology
With only such physical data, it is difficult to understand the abnormality of the communication state on the user side
[0010] In addition, since there is no device for reading the operation information of the ONU during the manufacture and maintenance of the ONU, there is also a problem that a lot of time is required for the evaluation test of the ONU.
In addition, with the miniaturization of ONU, it is also a problem to secure the space for installing the device for reading the operation information of the ONU used in the manufacture and maintenance of the ONU.
Method used
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Embodiment Construction
[0063] The configuration of the optical line terminal device at the user's house side according to the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code|symbol is attached|subjected to each structural part which has the same function for simplification of illustration and description.
[0064] use figure 1 A user house side optical line terminal unit (ONU) according to the first embodiment of the present invention will be described. figure 1 It is a block diagram showing the configuration of the user house side optical line terminal device 100 according to this embodiment. in addition, figure 2 means to use figure 1 An example of a PON type optical transmission system constituted by the ONU 100 of the present embodiment is shown.
[0065] figure 2 In the shown PON type optical transmission system 1, the PON interface card 10 that is located at the center has an optical lin...
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There is provided a customer premises optical network unit (ONU) capable of reading management signals and of outputting data through an external node by using I 2 C serial interfaces. In the ONU, an ONU functioning section has another serial signal terminal and is connected with a first management processing section through a sub-serial transmission path. The first management processing section is also connected with a MSA interface module through an additional monitoring signal transmission path and a monitoring signal transmission path. The monitoring signal transmission path on the side of the MSA interface module is connected with a sub-I / F section. A part of management signals set in an OAM layer of a signal transmitted between an OLT and the ONU may be outputted to an external nodeby using the first management processing section, the additional monitoring signal transmission path and the monitoring signal transmission path.
Description
technical field [0001] The present invention relates to a user house-side optical line terminal installed in a user house in a PON (Passive Optical Network: Passive Optical Network) optical transmission system. Background technique [0002] In optical networks such as FTTH and CATV, as described in the following patent document 1, the optical transmission line connected to the center is branched by a passive splitter and the optical transmission line is laid to multiple user houses. The optical transmission system is being used. Such an optical transmission system is also called PDS (PassiveDoubleStar). [0003] In PON optical transmission systems, such as Figure 8 As shown, the central optical line terminal device (OLT: Optical Line Termination) 901 is connected to the multiplexer end of the splitter 903 via an optical fiber 902, and is installed in each user's residential optical line terminal device (ONU: Optical Network Unit) 905-1, ... 905-n are connected to multiple...
Claims
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IPC IPC(8): H04B10/14H04L12/44
CPCH04Q2011/0079H04Q11/0067
Inventor 尾高邦雄网干胜也下大迫和隆
Owner FURUKAWA ELECTRIC CO LTD