PPTP-OUT & SSTP-OUT Issue and VOIP

PTP Admin!

Hi to All,

Please, can someone explain the image below.

PPTP and SSTP showing unreachable, then every 2 to 5 seconds appearing same PPTP/SSTP reachable.

And also, why our VOIP suddenly we cannot hear their voice, but they can hear us. Very strange like this. I did not change any configuration since 1-2 months, just doing a daily backup.
I also tried to restore the other day that all are working fine. But did not work.

The problem started maybe already 2 weeks.

Thank you!

Hi,

Please help me to resolve the problem. I appreciate your solution so much.

Thank you

-RESOLVED-