Play audio file on the telephone through a modem

how can i Play audio file on the telephone through a mod开发者_如何学JAVAem with php?

PHP alone can't do this. You'll need some kind of 3rd-party program that you can execute through PHP's exec command.

You need to send the appropriate AT command to the modem to tell it to expect an audio file, then you need to send the audio file to the modem.