Call admission control method, communication system and base...

Call box

Call box with keyboard communication

Call category for a call that terminates at announcement...

Call center access in a push to talk based call system

Call charges in a telecommunications network

Call completion based on movement of mobile station

Call conference within a home zone

Call connection management equipment for wireless mobile...

Call control method for a radio system

Call control method for dual-mode mobile terminals and a...

Call control method for dual-mode mobile terminals and a...

Call control method for handoff guarantee in mobile terminal

Call control method in base station of CDMA mobile radio...

Call control method in mobile communication and system therefor

Call control with converged application server logic and...

Call controlling apparatus, call controlling method, and...

Call delivery systems for roaming prepaid subscribers

Call destination number conversion system for representative...

Call device, call control system, call management system,...