A knowledge base article about Voicemail Mailbox Capacity and How to Delete Messages. provided by the UC Berkeley IT Service Hub - Knowledge Portal
Q: How many voicemail messages can I keep in my Mailbox?
A: You can store up to 320 messages in your mailbox. After that your mailbox will not accept new messages.
Q: How long will messages remain in my mailbox before they are automatically deleted?
A: Your messages will remain in you mailbox for one year before they are automatically deleted.
Q: I have my voicemail delivered as attachments to my e-mail address. Does deleting the email also delete the Voicemail in my Voicemail box?
A: No, deleting the email will not remove the voicemail from your voicemail box.
Q: How do I delete voicemail from my voicemail box?
A: Option #1. Dial in to your mailbox and follow these instructions.
A: Option #2. Log into the web interface of your voice-mailbox with and follow the instructions pages on 5 and 6 to manage your messages:
https://drive.google.com/file/d/17glFf9pFNPxmJFjvCenOB6Ob-Ats2Lr7/view?usp=share_link
Note: if you need to archive more that 320 voicemail messages you may do so as email attachments on in your email box. The message delivered to your email box do not count towards your 320 message limit.