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[Synopsis] Authenticate with Voicemail passwords [Description] VMAuthenticate([mailbox][@context][|options]): This application behaves the same way as the Authenticate application, but the passwords are taken from voicemail.conf. If the mailbox is specified, only that mailbox's password will be considered valid. If the mailbox is not specified, the channel variable AUTH_MAILBOX will be set with the authenticated mailbox. Options: s - Skip playing the initial prompts.