Locating faulty link section in active long-term connection

A link segment and interference technology, applied in the direction of automatic switching office, telephone communication, electrical components, etc., can solve the problems of limited signaling and lack of inspection possibility

Inactive Publication Date: 2004-09-29
NOKIA SIEMENS NETWORKS GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] (2) said inspection possibilities are very limited due to lack of signaling,
[0022] A second disadvantage is that, with this method, the interference may generally be limited

Method used

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  • Locating faulty link section in active long-term connection
  • Locating faulty link section in active long-term connection
  • Locating faulty link section in active long-term connection

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0038] now refer to figure 1 A permanent connection (NUC) is described with the system according to the invention for locating disturbed link sections 2 , 3 , 4 of an active permanent connection. figure 1 The shown long-term connection establishes a connection between the first client 7 and the second client 16 . Thus, in an interference-free state, signal transmission can be performed from the side of the first UE to the second UE 16, or vice versa. The entire long-term connection is composed of user terminals (TE1, TE2), network terminals (network terminals NT1, NT2), and multiple link segments connected by digital coupling networks (as components of switching offices VST1, VST2, ... VSTn) of.

[0039] The switching center VST1 has digital line units (DLUs), one of the DLUs being connected to the network port NT1 of the customer terminal TE1 and the other DLU being connected to a network port for connecting an external testing device 5 , for example. In the switching cent...

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PUM

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Abstract

The invention relates to the locating of a faulty link section (2, 3, 4) of an active long-term connection. The long-term connection is interrupted and a testing device (5) is activated at the point of interruption (6), or if the testing device is external, it is connected in. Mirroring devices (17), which send back incoming signals unchanged, are then progressively activated, starting from a point in the long-term connection a distance away from the point of interruption (6) and progressing in the direction of the point of interruption (6), until the faulty link section (2, 3, 4) of the long-term connection has been found. The testing device (5) transmits a test signal to the activated mirroring device (17) respectively and evaluates the mirrored signal for faults.

Description

technical field [0001] The present invention relates to methods and systems for locating disturbed link segments in active long-term connections. Background technique [0002] The long-term connection is a supplementary service, which can be realized through the service characteristics of the switching nodes of the public network and provided by its operators. The supplementary services of the public network are basically implemented only through technical innovations associated with digitalization and business expansion of the control of switching nodes and terminal equipment. Supplementary services are therefore essentially only provided to users at digital network nodes. [0003] Such a supplementary service is, for example, a permanent connection (semi-permanent connection, NUC), which provides a permanent connection between two subscribers and between a subscriber and a connection line. [0004] In a dial-up connection, the user establishes and re-dismantles a communi...

Claims

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Application Information

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IPC IPC(8): H04M3/22H04M3/30H04Q1/20
CPCH04M2203/055H04M3/2254H04M3/30H04M2207/08H04M3/085
Inventor D·格奈廷H·茨施卡
Owner NOKIA SIEMENS NETWORKS GMBH & CO KG
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