| 摘要 |
PURPOSE:To prevent useless charging by providing a busy tone detection means so as to surely detect the busy tone thereby quickening a release procedure of a line. CONSTITUTION:A busy tone by on-hook of a talking opposite party is detected and the result is processed into a pattern and recognition processing is implemented and the end of talking of a slave set is confirmed and a line release end signal is generated by a busy tone detection means 10 having a microcomputer 2. That is, the tone detection circuit 10 of the master set of the cordless communication equipment detects a busy tone by on-hook of the speech opposite party to process the end of talking of the slave set to be pattern and the microcomputer 2 compares and discriminates the pattern to confirm the busy tone and then, the line release processing is implemented. Thus, the end of talking of the slave set is quickly recognized and useless charging due to mis-talking between the master set and the slave set is prevented. |
