how do i check my voice mail from another phone

RFC wrote:

Dial the number but that you want to check. After the message plays push the *. You will then be prompted to enter your passcode and press the # button. Your voice mail will then operate as if you were on the phone with all functions available to you. Hope that helps I just tried it myself out of curiosity and it works. If you don't have a passcode you will have to log on to your T-Mobile account and set up a passcode. 

The answer I was looking for. Thank you. With four Tmoblie lines I need to check another one remotely and this solves the problem of going direct to the voice mail on the line you are using when you dial the 805 voicemail number.