Sir, I have got problem with Panasonic Fax machine the model number is KX-FT21. I am not able use the speaker phone using hands free option. The person who speaks from the other end couldn't be listened but able to hear what he speaks. I see there is a problem with the mic, but i am not able to find the mic inside the machine, So can you please help me out how to find mic inside the speakerphone. Please find the image attached. Regards Binojpk