I am trying to assign our 4 lines to extension 17. I have Number of Lines (#104) set to 4. When I go into Line Assignment (#301), frustration ensues. On extension 10, we access the programming via feature 00, blah blah blah, #301. Once into #301, we press 01 to assign the first line and it pops up with 2 Not assigned. Pressing the Next Data button at this point results in an angry beep and neither pressing a button nor pressing next data does anything good, only more angry beeps. How can I assign an outgoing line to extension 17?