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題名 | 高速數位用戶迴路線路干擾與互通性測試之研究=The Research of DSL Crosstalk and Interperability Testing |
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作者 | 謝宜宏; 李榮瑞; 王井煦; | 書刊名 | 電信研究 |
卷期 | 35:3 民94.06 |
頁次 | 頁437-448 |
分類號 | 448.6 |
關鍵詞 | 串音; 近端串音; 遠端串音; Crosstalk; Near end crosstalk; NEXT; Far end crosstalk; FEXT; |
語文 | 中文(Chinese) |
中文摘要 | 隨著數位用戶迴路(Digital Subscriber line, DSL)連線建置數量增加與不同DSL技術同時存在於用戶迴路中,接取網路及用戶端網路的線路串音(Crosstalk)干擾問題將日益重要。另一方面,由於ADSL(Asymmetric DSL)已成為全世界最普遍之寬頻接取技術,許多DSL廠商投入研發CPE與局端之DSL設備,而各廠商DSL設備之互通性測試亦是重要議題。ADSL互通性測試主要是根據ITU-T G.996.1規範之迴路性能測試與DSL論壇上所提出之互通性測試規範(TR-048)[1]來進行。其中TR-048內容被新一代的ADSL標準ADSL2所採用,作為美規的測試規範,其主要範疇在於針對不同之局端設備(Digital Subscriber Line Access Multiplexer, DSLAM)廠家和CPE廠家進行實體層和高層之互通性測試。另外亦針對ADSL實體層互通性測試及百對ADSL串音干擾測試,設計了一自動化測試平臺,可對相關之測試結果進行判斷與分析,以達到節省人工、快速、準確又可大量測試的目的。 |
英文摘要 | As the number of deployed DSL connections increases, the Crosstalk interference issues related to the DSL connections become more and more important. Many DSL vendors invest in development of central office and CPE ADSL equipment due to ADSL turns into the most common broadband access technology. Furthermore, the interoperability issue between different DSLAM and CPE vendors is also important. The ADSL interoperability tests are performed according to the test items and procedures specified in ITU-T G.996.1 and in DSL Forum TR-048. The interoperability tests of TR-048 including the physical layer test and higher layer test had been adopted in ADSL2. This paper is aimed to introduce the interference regarding ADSL lines, interoperability test of ADSL, and an automatic interoperability/Crosstalk test platform developed by TL. The self-developed test platform makes use of the real copper wires to perform diversity of physical layer tests and the tested results can be analyzed and generated automatically. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。