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Subscriber premise-side optical line termination device

An optical line terminal and residential technology, which is applied to the selection device of the multiplexing system, the selection device, the data exchange through the path configuration, etc., and can solve the problems of abnormal communication and a lot of time.

Active Publication Date: 2013-01-16
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When there is a communication error in the PON optical transmission system, under the current situation, there is no unit for reading the operation information of all ONUs, so it is not easy to know where the problem occurred inside the ONU
In addition, there is no unit for reading the operation information of the ONU during ONU manufacture or maintenance, so there is a problem that a lot of time is required for ONU evaluation tests and the like.

Method used

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  • Subscriber premise-side optical line termination device
  • Subscriber premise-side optical line termination device
  • Subscriber premise-side optical line termination device

Examples

Experimental program
Comparison scheme
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Embodiment approach 1

[0029] Referring to the accompanying drawings, the configuration of a user house side optical line terminal device according to a preferred embodiment of the present invention will be described in detail. figure 1 A block diagram showing the configuration of a user house side optical line terminal unit (ONU) according to Embodiment 1 of the present invention. Additionally, Figure 2 shows the use of figure 1 The shown ONU 100 of this embodiment is an example of a PON type optical transmission system constituted.

[0030] In the PON type optical transmission system 1 of Fig. 2, the PON interface card 10 arranged at the center has an optical line terminal (OLT) 11 and an authentication function section 12, and the optical transmission line, that is, the optical fiber 20, is connected to the optical input and output ends of the OLT 11. one end. In addition, the optical coupler (optical integration and demultiplexing unit) 30 has one integration end and two or more division end...

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PUM

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Abstract

In an ONU (100), a first serial signal terminal (121) of an ONU functional block (120) is connected through switch circuits (170a, 170b) to a first serial IF block (142). A ground wire (162b) is branched so as to be connected to the switch circuits (170a, 170b). A voltage applied to the ground wire (162b) is used as a control signal. When the ground wire (162b) is connected to ground, the switch circuits (170a, 170b) are cut off, so that an access from the first serial IF block (142) is not permitted. When a predetermined voltage is applied to the ground wire (162b), the switch circuits (170a, 170b) are energized, so that an access from the first serial IF block (142) is permitted.

Description

technical field [0001] The present invention relates to a user house-side optical line terminal installed in a user house in a PON optical transmission system. Background technique [0002] In optical networks such as FTTH and CATV, as disclosed in the following patent document 1, the following optical transmission system is used: the optical transmission line connected to the center (center) is branched by a passive splitter (splitter), A PON (Passive Optical Network) type optical transmission system that lays optical transmission lines to multiple user houses. Such an optical transmission system is also called PDS (Passive Double Star). [0003] In the PON optical transmission system, such as Image 6 As shown, the central optical line terminal device (OLT: Optical Line Termination) 901 is connected to the integration end of the splitter 903 through the optical fiber (fiber) 902, and at the multiple splitter ends of the splitter 903, through the optical fiber 904-1 , ......

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/44
CPCH04Q11/0067
Inventor 网干胜也下大迫和隆尾高邦雄
Owner FURUKAWA ELECTRIC CO LTD