- first_d=$(date -r `head -1 "$CALL_LOG" | cut -d'|' -f3` "+%Y-%m-%d %H:%M")
- last_d=$(date -r `tail -1 "$CALL_LOG" | cut -d'|' -f3` "+%Y-%m-%d %H:%M")
+ first_d=$(date -r `head -1 "$CALL_LOG" | cut -d'|' -f1` "+%Y-%m-%d %H:%M")
+ last_d=$(date -r `tail -1 "$CALL_LOG" | cut -d'|' -f1` "+%Y-%m-%d %H:%M")