Dial the pilot number of the voicemail, and when it answers, dial "987". If asked for a password, I believe it is "XXXXXXXXX". The announcement won't tell where the "dots" are, but it'll probably be a common subnet class.
[Please DO NOT post passwords in the open forum. If you need to share password info, please instead use the Private Message feature, or email or other private method of communication. Thanks! Justin]