Call charges in a telecommunications network

Call control with converged application server logic and...

Call information output in a telecommunication network

Call logging in a wireless telecommunications system

Call routing apparatus

Call routing apparatus

Call routing apparatus

Call timers specific to each type of cellular telephone call

Calling party paid wireless telecommunication system

Calling party pays system bypass

Cell phone minute usage calculation and display

Cellular adjunct to a public wired network

Cellular phone managing method, managing apparatus, record...

Cellular phone system wherein the air time use is predetermined

Cellular system having programmable subscription capabilities

Cellular telephone device having a non-contact type...

Cellular telephone management system

Cellular telephone system having mobile charging region and area

Cellular telephone-based transaction processing

Cellular telephone-based transaction processing