Voice mail apparatus and control method of voice mail apparatus

A voice mail apparatus connected to a telephone exchange apparatus performing exchange processing among a plurality of telephone terminals to record a voice message sent out from the telephone terminal on a calling side in response to a termination call from the telephone exchange apparatus in a mail box and to reproduce the voice message recorded in the mail box in accordance with reproduction instructions, comprising:

• a first determining module which determines whether a dual tone multi frequency (DTMF) signal for identifying a processing request of the voice message is contained in a received signal by detecting and comparing a first parameter of a transmission signal from the mail box and the first parameter of the received signal to the mail box;
• a second determining module which determines whether the DTMF signal is contained in the received signal by detecting and comparing a second parameter being different from the first parameter of the transmission signal from the mail box and the second parameter of the received signal to the mail box, when the DTMF signal is not contained in the received signal from a determination result by the first determining module;
• and
• a controller which controls execution/stop of processing of the voice message based on a determination result by the second determining module.