I had to replace a KXT30810BE today, all went well except when i came to programming some DSS keys. I had to delete some CO keys to do so but when i went into the individual programming modes on each phone it came up with 'one touch dial' and when i tried to press the CO keys that I wanted to change or any of the CO keys for that matter they would not register anything. The manual said that all i had to do was press it, so could anyone suggest why I was unable to program them? Cheers.