Apparatus and method for detection of off-hook phone in reverse power feeding architecture
US-2015334226-A1 · Nov 19, 2015 · US
Systems and methods for characterizing loops based on single-ended line testing (SELT)
US9178990B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9178990-B2 |
| Application number | US-16448808-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 30, 2008 |
| Priority date | Jun 30, 2008 |
| Publication date | Nov 3, 2015 |
| Grant date | Nov 3, 2015 |
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Abstract
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Systems and methods for characterizing loops based on frequency domain reflectometry single-ended line testing (FDR-SELT) are described. One embodiment includes a method for determining whether a straight-loop departure condition exists on a loop under test. First, an un-calibrated echo signal is received. A region associated with the loop under test, a platform type, and estimated the length of the loop under test are then used together with the received un-calibrated echo signal to determine whether the loop is not a straight loop is determined through determining whether at least one differentiating feature is present in the received signal. Another embodiment includes a method for determining a loop gauge for a loop under test through analyzing characteristics relating to local maxima and local minima of the received un-calibrated echo signal using the region, platform type, and the estimated loop length.
First claim
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At least the following is claimed: 1. A method for determining whether a straight-loop departure condition exists on a loop under test, the loop connecting a customer premise equipment (CPE) modem to the central office (CO) modern in a communication system, comprising: receiving, at the CO modem or CPE modern, an un-calibrated echo signal for the loop under test using frequency domain reflectometry single-ended line testing (FDR-SELT), a geographical region associated with the loo…
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- What does patent US9178990B2 cover?
- Systems and methods for characterizing loops based on frequency domain reflectometry single-ended line testing (FDR-SELT) are described. One embodiment includes a method for determining whether a straight-loop departure condition exists on a loop under test. First, an un-calibrated echo signal is received. A region associated with the loop under test, a platform type, and estimated the length o…
- Who is the assignee on this patent?
- Dinesh Vaibhav, Raheja Kunal, Duvaut Patrick, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04M3/306. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).