Call processing method and apparatus for mobile terminal in...
Call processing system for controlling connections in a communic
Call progress detection circuitry and method
Call queuing service termination
Call record management for high capacity switched virtual...
Call redirection methods in a packet based communications networ
Call redirection methods in a packet based communications...
Call restriction system for an ATM exchange
Call routing in an ATM switching network
Call set-up method using SIP-T overlap signaling
Call set-up server
Call setting method for network system
Call setup for IP/Internet telephony
Call setup gateway for telecommunications system
Call setup method
Call setup request confirmation
Call signaling approach to user self-provisioning of VoIP...
Call signaling approach to user self-provisioning on VoIP...
Call signature in a packet-based network
Call size feedback on PNNI operation