Roadside transmitter

Roamer port notification in a radio telecommunications network

Roamer service auto-activation and deactivation in a home locati

Roaming across different access mechanisms and network...

Roaming across different access mechanisms and network...

Roaming across different access mechanisms and network...

Roaming across different access mechanisms and network...

Roaming agreement application and database for carrying out...

Roaming arrangement

Roaming authorization system

Roaming authorization system

Roaming control method for digital mobile telephone

Roaming gateway enabling location based services (LBS)...

Roaming gateway for support of advanced voice services while...

Roaming gateway for support of advanced voice services while...

Roaming in wireless networks with dynamic modification of...

Roaming indicators for multi-mode wireless communication...

Roaming method

Roaming method and devices appropriate therefor

Roaming mobile communication system and method