Method of managing telephone calls over a data network, telephony station, server and telephony system supporting said method

摘要

The invention proposes a bidirectional interchange of information between a telephony station and a PROXY to interchange signaling protocol messages 103, 105 - 108, 110 . This bidirectional interchange between the telephony station and the PROXY remains permanent and independent of the establishment of a telephone call. The protocol messages interchanged permanently between the telephony station and the PROXY are short messages that indicate the tones to be used and the DTMF signals. Preferentially, the protocol messages correspond to subscription service notification messages. Following the startup of the telephony station 98 , the telephony station subscribes 99 with the server to a tone service, and the server subscribes 100 with the telephony station to a key press event service.