Show Call Duration (Menu 2-5)
This function allows you to view the duration of your incoming and
outgoing calls in hours, minutes and seconds. You can also (by first
entering the security code) clear the call timers. See Chapter
‘Reference Information’ - ‘Access Codes’
NOTE: The actual time invoiced for calls by your
service provider may vary, depending upon
network features, rounding-off for billing, and so
forth.