Stlrs83,
This is the answer I got back when one of our technicians ran into that problem.
"The Call History App should have an outgoing access prefix in front of outside numbers (i.e. 92000xxx-xxxx, 92001xxx-xxxx, etc). The reason for this is that the phone firmware did not implement a new command properly so we decided not to implement it. The reason we need to do this for the Call History app is that the digits are sent as if the user pressed the keys one by one, so we would not know up front whether or not it was an internal or external number. Conversely, the call logs feature does not need the outgoing prefix since we have more intelligence as to what the call log type is prior to dialing any digits."
Thanks,
TE