Hello & Welcome to Just Answer,
I'm Greg and will do my best to assist you today.
Sorry I didn't see your question earlier and to hear of any issue you are having with your phones.
To help you with this issue, may I ask:
1) The FULL Model Number of the phone system you are working with? If this is a cordless system, that model should be printed on a sticker on the bottom or back of the MAIN base (dect 6.0 is a feature and does not identify the phone).
2) Does this phone system have a built-in answering system that you are trying to set up and use?
3) What phone service provider (phone company) you have for this phone line?
4) When and where do you hear (or see) something about a "password"?
Please REPLY using the box below and the SEND button.