Patent ID: 7099475

Claim:
A method for dial roaming outside of a home service region comprising: dialing into a local dial access provider; creating an access request comprising user identifying information and home region identifying information; forwarding the access request from a network access server (NAS) to a corporate remote authentication dial-in user service (RADIUS) server; determining from the home region identifying information whether the home region supports Lightweight Directory Access Protocol (LDAP) authentication; if the home region does not offer LDAP authentication, then: proxying the access request to a regional RADIUS server associated with the user's home region; comparing the user identifying information in the access request with user identifying information stored in a regional user database accessible to the regional RADIUS server; and if the user identifying information in the access request matches the stored user identifying information, then: authenticating the user; and providing configuration information to the NAS to allow access to a network of the home region.