However, then user is not getting their voicemails !
Trying to troubleshoot: when calling this extension and ending up on the voicemail, we hear the recorded greeting, we can leave a message. If we press a key to get options, and you select send the message, then the system responds with “an error has occurred” en hangs up.
I don’t know where to look to find logs or more info on what’s going on.
Remember, you can adjust that minimum in the Advanced Settings (IIRC), but seriously, if someone is going to leave a meaningful message, it’s going to last more than 15 words.