Originally Posted by nameless
Look at the logs in the vm, they should shed some light on your issue.
From memory the sip dtmf settings are for outbound calls.

What forward do you have setup on the reception extension?
Or do calls ring to the operator group?
It's possible that when your reception is on the phone calls are going back into the vm and cause there is no mailbox for that extension callers are ending backup In the day aa menu

i will check the logs.

calls ring to a separate group.

what you said rang a bell about another problem. When a caller calls in while the System is in day mode and they dial 0 but the receptionist doesn't answer it will not give the caller an option to leave a message or even go to VM it will tell the caller dial the extension if you know it or press * for assistance. During night mode VM works for 0 it's only day mode it doesn't i'm wondering if that's causing the intermittent issue. We never had this problem until we had a tech out to reprogram the system to add extensions and change ring plan etc etc.

I'll check logs of VM. I'm also having one of the nurses who is having trouble calling in try to call in again and see what the logs say about her call to get more intel on the matter.