All Parther voice mail or messaging systems have a master login and password. It usually is 99 or 999 and the password. From that mailbox, you can reset the extensions and administer the system. Your system admin guide for the particular messaging system will have complete instructions and the default password for the administer. If you've lost the "master" password, you'll need to contact your Avaya dealer who can reset it through Avaya.
Carl
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