On your Mitel phone, click the VOICEMAIL button > dial * > dial your extension number > dial your voicemail password, then # and follow the prompt to delete all messages. 9 is a shortcut for deletion.
On your Mitel phone, click the VOICEMAIL button > dial * > dial your extension number > dial your voicemail password, then # and follow the prompt to delete all messages. 9 is a shortcut for deletion.