| 摘要 |
<p>A testing environment (10) and a method for telephone number identification or verification. The testing environment (10) and method of the present invention analyzes incoming analog signals of a telephone call being made to the tested line (14) as the receiving party from the central office switch (21). These incoming analog signals preferably include ring signal, call waiting tone and voice signals. These signals are then analyzed in order to verify the telephone number. Thus, the testing environment (10) and method has the advantage of being able to analyze data received from the tested line (14) rather that requiring the tested telephone line (14) to initiate a telephone call.</p> |
