I get the impression reading the Icom online blurb about this radio that it's supposed to be delivered WITH the HM-133V microphone. You might want to double check this and see if the dealer/seller pulled a switcheroo on you when the sale was made. I don't know if the V8000 can be controlled by the 133 mic but my three 208s can be, so there's a heck of a lot more involved with the 133 than just punching in touchtones, assuming the 8000 works like a 208 in this respect.