Great short video! However I have encounter a problem when settings those keys. I had similar settings to yours when comes to VMP Keys. Then I have made changes to the key number 1. In your example, under key 1, you have settings: mode: default, Account: 1... Have you tried to edit that key and change it into BLF or a speed dial? I did and no longer was able to use phone, because after that there is no phone signal, and when you lift the handset up, short message is showing up: “Account is not registered”. My phone model is GRP2615, and having the same settings that you have in this video, and with those settings my phone is displaying my extension number twice. In upper left corner of the LCD display there is a green handset icon and next to it my extension number, then just below that, where VMP key number 1 is, my extension number is showing up just next to the green icon of the handset. So when you look at the phone screen you can se the same extension twice.... Wondering if you have encounter that issue as well? Any solutions on how to utilized all VMP Keys?