Negative Values in CDR of Asterisk 1.2

Asterisk Asterisk Support
1

I am using asterisk 1.2.7.1 with TDM2400 and . I am getting negative bill seconds in CDR for partticular extensions once in a week, so we have problem in calculating bill seconds.

Please help me to sort out this issue,

Thanks and Regards,
Krishna Kumar

2

maybe you changing the system time at that moment when that call is active. Maybe a cron job that runs ntpdate or something.