Call information output in a telecommunication network

Call instance representation of a call for call management in a

Call intercept methods, such as for customer self-support on...

Call interruption compensation system

Call logging in a wireless telecommunications system

Call management for a multi-site mobile radio dispatch network

Call management in a telecommunications system

Call management services to telephone devices which are connecte

Call processing for group conferencing

Call processing method and apparatus for effective QoS...

Call processing method and apparatus in a private...

Call processing method capable of home-zone additional...

Call processing method during termination busy state of...

Call re-establishment for a dual mode telephone

Call redirection system

Call redirection zones for wireless communications

Call rejecting system and method of using the same

Call routing

Call routing apparatus

Call routing apparatus