Introduction - If you have any usage issues, please Google them yourself
< < < < < > > > > > Program Function 1) to receive Caller ID (FSK caller support means, DTMF Caller way) 2) to receive local telephone calls, turn inside 3) internal calls inside 4) internal calls outside 5) transfer agent function calls when the phone screen to play the agent, the server-side message will take the initiative to the client IP, client-side initiative to accept the call number, and from the lower right corner of display.