Automatically testing telephone lines
October 10, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re30692 3739107 Telephone instrument connection block with remotely actuated line test Portable line tester for telecommunication system Apparatus for transmitting information via telephone lines Telephone tester Remote testing system for electrical circuits Telephone line testing circuit Telephone care system with telephone line-checking Test apparatus for a subscriber line InventorAssigneeApplicationNo. 595246 filed on 10/10/1990US Classes:379/29.01, Terminal arrangement to enable remote testing (e.g., testing interface)379/24, Electrical parameter measurement (e.g., attenuation)379/27.02, By generating call signal379/30Loop impedance (e.g., resistance, capacitance)ExaminersPrimary: Schreyer, Stafford D.International ClassesH04M 001/24H04B 003/46 AbstractA method of testing a telephone line including installing a test call unit at an end of the telephone line at which a customer's equipment is connected, automatically initiating a telephone line test at the module, performing the telephone line test, and transmitting the results of the line test over the telephone line. | |
