i need to dial a fourteen digit charge code before making a call. When i program the personal directory on my 3904 feature i am able to enter 1599999999999999 (our dummy charge code) then pause, then the ten-digit number. so i can fit all of the following: 1599999999999999#913105551212. However, in my other office i cannot fit that many digits. Is the amount of digits expandable somehow? i have no NTPs yet as they're not even out of the box yet. Please advise. Thank you!