i had to replace an old sts ksu with an sbx but they wanted to keep the sts phones. i cant seem to make a last number redial button for them. not in lap top admin or with telephone programing. can anyone tell me how. also a button referance for using sts phone to program an sbx. for instance i learned in ringing programing with a phone spdl button to remove a line from ringing is done with the flash button with the sts phone. thanks dave