Hello i have a CUCM 8 usually i have a variance between the actual time and CISCO time about 5 min .when i set the time from cisco unified OS administration page,  i notice that after 3 to 4 weeks the time changed back again to the old time.Can anyon...

i have a 3845 gateway added as h323 gateway on CUCM 8.we i try to make an outbound call . The system cannot complete the call. "Your call cannot be completed as dialed Please  consult your directory and call again or ask your operator for assistance ...