Arrangement for line-testing

Details Arrangement for line-testing Arrangement for line-testing

2007-06-05

2007-06-05

Tieu, Binh K. (Department: 2614)

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Testing of subscriber loop or terminal

C379S001010, C379S027010, C379S027060, C379S029010

Reexamination Certificate

active

10476154

ABSTRACT:
This invention generally relates to the arrangements for testing subscriber loops. The invention is based on a solution wherein a test head is behind the high-pass filter of the splitter. In order that this solution is possible, the splitter, i.e. the splitter box has to contain a relay and a relay control element. When a subscriber line is to be tested the test head sends a DC pulse to the relay control element, which directs the relay to connect the subscriber loop to bypass wirings through which the test head can perform necessary testing measurements. When the testing is over the relay control element directs the relay to switch back for connecting the subscriber loop to the common port of the filters.

REFERENCES:
patent: 6192109 (2001-02-01), Amrany et al.
patent: 6205202 (2001-03-01), Yoshida et al.
patent: 6215855 (2001-04-01), Schneider
patent: 6480575 (2002-11-01), Chea et al.
patent: 6535581 (2003-03-01), Singaliese
patent: 6553105 (2003-04-01), Chea et al.
patent: 6574309 (2003-06-01), Chea et al.
patent: 6594343 (2003-07-01), Duffie et al.
patent: 2002/0122539 (2002-09-01), Chea et al.
patent: 2002/0131568 (2002-09-01), Chea et al.
patent: WO 01/65816 (2001-09-01), None
patent: WO 02/09407 (2002-01-01), None

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