| 摘要 |
<p>Disclosed is a method for operating a radiotelephone system, and a radiotelephone system that operates in accordance with the method. The method includes the steps of: (a) detecting a reception of a start of a DTMF signal from a Public Switched Telephone Network; (b) constructing a first message for indicating a PSTN telephone keypad key that corresponds to the detected start of the DTMF signal; (c) transmitting the first message over a radio channel; (d) receiving the first message from the radio channel with a radiotelephone; and (e) responsive to the received first message, generating a corresponding DTMF audio tone within the radiotelephone. The method further includes the steps of: (f) detecting a reception of a termination of the DTMF signal from the Public Switched Telephone Network; (g) constructing a second message for indicating the PSTN telephone keypad key that corresponds to the detected termination of the DTMF signal; (h) transmitting the second message over the radio channel; (i) receiving the second message from the radio channel with the radiotelephone; and (j) responsive to the received second message, terminating the generation of the corresponding DTMF audio tone within the radiotelephone. <IMAGE></p> |
