What is an MMI sequence?

[doojer]

Hi. This is my first post here... and i promise I searched first!

It seems that this has only started happening within the last day or so... but when I am in a call on my Sprint HTC Hero, if I bring up the touch-keypad, hit the number 1 and then slide the keypad away, I get a message "Starting MMI sequence" and the call disconnects. The reason I discovered this is because I use Google Voice and I need to press 1 to accept a call or 2 to send it to voicemail. But, when I press 1 and slide away the keypad, it disconnects. This does not happen when I press the actual keypad soft-button to get the keypad to disappear, it only happens when I swipe it down and away. It runs other MMI Sequences, depending on which key I press... so is this a function of the phone (like a shortcut or something), or is it something that shouldn't be happening? Like I said, I don't think I've noticed it before the last day or so.

Should pressing a button on the soft-keypad and swiping the keyboard away always run an "MMI Sequence"?

Thanks very much for any help or thoughts!

[doojer]

Oh, and if you don't know the answer but you have a Sprint HTC Hero you could test this on, I'd be very appreciative. Just make a call, bring up the soft-touch keypad, hit "1" on the keypad and swipe it down and away.

Does that run an MMI sequence for you?

Thanks!

[doojer]

Nobody can help?

I'm really at a loss here... any ideas are greatly appreciated!