Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Reexamination Certificate
2007-11-13
2007-11-13
Tran, Quoc (Department: 2614)
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of subscriber loop or terminal
C379S001010, C379S022030, C379S029010, C379S029110
Reexamination Certificate
active
10672819
ABSTRACT:
Systems and methods for detecting a status of a telephone line. Some of the systems include a telecommunications system which comprises a dial tone tester integrated with a demarcation device. Such dial tone testers can include a visual device or an audible device indicative of line status. Various methods are also described for detecting the status of a telephone line. Such methods can include receiving a response originating from a customer premises, viewing a demarcation device located at the customer premises, and determining line status from a dial tone tester integrated with the demarcation device.
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Radio Shack, http://www.radioshack.com/productasp?,, Sep. 18, 2003, 2 pages.
Qwest Communications International Inc.
Townsend and Townsend / and Crew LLP
Tran Quoc
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