I can't set a 4 digit voicemail password in Virtual Office Configuration Manager, the message Password should have a minimum of 6 digits shows up.
Virtual Office Configuration Manager
You will need to enter a voicemail password of a minimum of 6 digits.
Due to security reasons, it was deemed that the voicemail password of 4 digits is not secure enough and the minimum voicemail password length has been increased to 6 digits. This is hardcoded in the product and cannot be changed.