Mitel 700 User Manual page 30

Mitel 600/700 DECT Phone Messaging and Alerting Applications
Other Options menus for normal and urgent jobs are
described in "Confirmation of a Job" on page 12.
Tip: To delete all messages in the Inbox list or in the
Jobs list including unread messages, you can use the
Security > Reset to default > Inbox/Text messages
menu entry. The Security menu can be accessed
through the PIN (Personal Identification Number). The
default is "0000".
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