Claims
- 1. System for measuring the effect of at least one Asymmetrical Digital Subscriber Line splitter (4,7) on at least one transmission characteristics of an Integrated Service Digital Network infrastructure (6), the system comprising:
measuring means for measuring the at least one transmission characteristic falling outside an internationally-defined range for this transmission characteristic.
- 2. System according to claim 1, wherein the measuring means comprise an impedance meter, with the at least one transmission characteristic comprising an impedance.
- 3. System according to claim 2, wherein the internationally-defined range comprises a mask defined by an ITU-T Recommendation G.961, with a phase of the impedance for some frequencies falling outside this mask.
- 4. System according to claim 3, wherein the phase has a positive value between 25 and 48 kHz and between 73 and 100 kHz.
- 5. System according to claim 1, wherein the measuring means comprise a propagation time meter, with the at least one transmission characteristic comprising a delay.
- 6. System according to claim 5, wherein the internationally-defined range comprises a mask defined by an ITU-T Recommendation G.961, with the delay falling entirely outside this mask.
- 7. System according to claim 1, wherein the measuring means comprise an insertion loss meter, with the at least one transmission characteristic comprising an insertion loss.
- 8. System according to claim 7, wherein the internationally-defined range comprises a mask defined by an ITU-T Recommendation G.961, with the insertion loss for some frequencies falling outside this mask.
- 9. System according to claim 1, wherein the measuring means comprise a BER meter coupled via a Line Termination simulator (9) and at least one Asymmetrical Digital Subscriber Line splitter (4,7) to a Network Termination (3), with the at least one transmission characteristic comprising a correct/incorrect functioning of the Integrated Service Digital Network infrastructure (6) in relation to a cable length of the Integrated Service Digital Network infrastructure (6).
- 10. System according to claim 9, wherein, in case of one Asymmetrical Digital Subscriber Line splitter (4,7) being present, the Integrated Service Digital Network infrastructure (6) functions at least sometimes incorrectly for cable lengths between 1000 and 1600 m, and in case of two Asymmetrical Digital Subscriber Line splitter (4,7) being present, the Integrated Service Digital Network infrastructure (6) functions at least sometimes incorrectly for cable lengths between 400 and 2000 m.
RELATED CASES
[0001] The present patent application is related to U.S. Provisional Patent Application Serial No. 60/436,736; filed on Dec. 27, 2002, the full disclosure of which is incorporated herein by reference.
Provisional Applications (1)
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Number |
Date |
Country |
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60436736 |
Dec 2002 |
US |