Have you tried
1.Press Feature 812. The display will change to show your call log records. · Use the * key to select which call log records you are viewing. The options are All, Mis (missed calls), Ans
(answered incoming calls) and Out (outgoing calls). · Use the speaker up and speaker down buttons to scroll through the records.
2.Pressing # or lifting the handset will make a call to the number stored with the currently displayed record.
3.To exit the call log, press the Feature button.