I have assembled the breadboard to test out a JQ6500 sound module. The module is capable of storing five different MP3 files that playwhen a connection of the pushbuttons is madr, situated on the intercom. The switches include lifting the phone cradle. This will provide instructions for the user. The JQ6500 module runs on 4.5 V any higher than 5.2 V and it will damage the module. I will install a voltage regulator inside the phone to prevent this.