Is it possible to utililize Deviceanduser mode across peered servers?

We have a main office and four remote locations. Our people often spend time at each of the various offices. I am hoping that we can use the login/logout functionality across a virtualized pbx. Only the main site has a TB box now that has been running for a year and a half.

Basicly, if we added asterisk boxes at each remote location and peered them with iax2 back to the main location, would it be possible to utilize the login/logout function at any site?

Thank you.