DE102004014197A1 - Circuit arrangement and method for designing networks - Google Patents
Circuit arrangement and method for designing networks Download PDFInfo
- Publication number
- DE102004014197A1 DE102004014197A1 DE200410014197 DE102004014197A DE102004014197A1 DE 102004014197 A1 DE102004014197 A1 DE 102004014197A1 DE 200410014197 DE200410014197 DE 200410014197 DE 102004014197 A DE102004014197 A DE 102004014197A DE 102004014197 A1 DE102004014197 A1 DE 102004014197A1
- Authority
- DE
- Germany
- Prior art keywords
- circuit arrangement
- subscriber line
- designing networks
- attenuation
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/005—Interface circuits for subscriber lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
- H04M3/305—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop testing of physical copper line parameters, e.g. capacitance or resistance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Mit der Schaltungsanordnung und dem dazugehörigen Verfahren werden die frequenzabhängige Betriebsdämpfung und die Dämpfungsverzerrungen von Dual-Ton-Multifrequenzy DTMF-Tönen am Ende einer Teilnehmeranschlussleitung gemessen und daraus die Leitungsimpedanzen der Teilnehmeranschlussleitung bestimmt. Je nach Ausprägung der Teilnehmeranschlussleitung wird dann die individuelle Nachbildimpedanz der Teilnehmeranschlussleitung eingestellt.With the circuit arrangement and the associated method, the frequency-dependent operating attenuation and the attenuation distortions of dual-tone multifrequency DTMF tones are measured at the end of a subscriber line, and from this the line impedances of the subscriber line are determined. Depending on the characteristics of the subscriber line, the individual afterimage impedance of the subscriber line is then set.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410014197 DE102004014197A1 (en) | 2004-03-23 | 2004-03-23 | Circuit arrangement and method for designing networks |
PCT/EP2005/051122 WO2005094048A1 (en) | 2004-03-23 | 2005-03-11 | Circuit arrangement and method for configuring networks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410014197 DE102004014197A1 (en) | 2004-03-23 | 2004-03-23 | Circuit arrangement and method for designing networks |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004014197A1 true DE102004014197A1 (en) | 2005-10-20 |
Family
ID=34961771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410014197 Withdrawn DE102004014197A1 (en) | 2004-03-23 | 2004-03-23 | Circuit arrangement and method for designing networks |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102004014197A1 (en) |
WO (1) | WO2005094048A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD261692A1 (en) * | 1987-06-12 | 1988-11-02 | Nachrichten Elektronik Zft | METHOD FOR AUTOMATICALLY ADJUSTING A TRAINING NETWORK TO THE IMPEDANCE OF A TWO-WIRE CONNECTION OF A FORK SWITCH IN TELEPHONE TRANSMISSION APPARATUS |
DE10102867A1 (en) * | 2001-01-23 | 2002-09-05 | Siemens Ag | Analysis method for the data transfer properties of a data carrier in the form of twin wire cable uses remotely controlled modem with fast Fourier transform module for analysis of signal |
DE10119793A1 (en) * | 2001-04-23 | 2002-10-31 | Siemens Ag | Method and circuit arrangement for impedance matching of an analog telecommunication connection |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5258713A (en) * | 1992-04-16 | 1993-11-02 | Northern Telecom Limited | Impedance generator for a telephone line interface circuit |
FI101436B (en) * | 1996-10-02 | 1998-06-15 | Ericsson Telefon Ab L M | Wiring circuit and procedure for a wiring circuit |
WO2001049012A1 (en) * | 1999-12-27 | 2001-07-05 | Nortel Networks Limited | Line interface circuit with two feedback loops to synthesise required impedance |
DE10050336C1 (en) * | 2000-10-11 | 2002-07-25 | Infineon Technologies Ag | Programmable echo compensation filter for transceiver uses programmable resistance circuits with parallel resistors and associated controlled switches |
-
2004
- 2004-03-23 DE DE200410014197 patent/DE102004014197A1/en not_active Withdrawn
-
2005
- 2005-03-11 WO PCT/EP2005/051122 patent/WO2005094048A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD261692A1 (en) * | 1987-06-12 | 1988-11-02 | Nachrichten Elektronik Zft | METHOD FOR AUTOMATICALLY ADJUSTING A TRAINING NETWORK TO THE IMPEDANCE OF A TWO-WIRE CONNECTION OF A FORK SWITCH IN TELEPHONE TRANSMISSION APPARATUS |
DE10102867A1 (en) * | 2001-01-23 | 2002-09-05 | Siemens Ag | Analysis method for the data transfer properties of a data carrier in the form of twin wire cable uses remotely controlled modem with fast Fourier transform module for analysis of signal |
DE10119793A1 (en) * | 2001-04-23 | 2002-10-31 | Siemens Ag | Method and circuit arrangement for impedance matching of an analog telecommunication connection |
Also Published As
Publication number | Publication date |
---|---|
WO2005094048A1 (en) | 2005-10-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8139 | Disposal/non-payment of the annual fee |