Patent ID: 8077853

Claim:
A Voice over IP (VoIP) adapter for POTS phone, comprising: a POTS phone connector for connecting to a POTS phone; an IP network interface for connecting to an IP network; a first signaling receiver for receiving signaling messages from a POTS phone; a second signaling receiver for receiving signaling messages from the IP network; a first signaling sender for sending signaling messages to the POTS phone; a second signaling sender for sending signaling messages to the IP network; a first media receiver for receiving media data from the POTS phone; a second media receiver for receiving media data from the IP network; a first media sender for sending media data in a format that can be recognized by the POTS phone to the POTS phone; a second media sender for sending media data in the form of appropriate VoIP data packets to the IP network; a controller for controlling said first and said second signaling sender to send out signaling messages, said first and said second media receiver to receive incoming media streams, and said first and said second media sender to send out media data; a DTMF (Dual Tone Multiple Frequency) signal detector for detecting DTMF signals in all the signals received from the POTS phone and decoding them; and a command store for storing a set of digit sequence commands which represent the advanced VoIP functions; wherein, said controller compares the digit sequence decoded from the DTMF signals with said set of digit sequence commands, and performs the corresponding advanced VoIP function.