Abstract: Computer-telephony events are initiated by a user operating a computer terminal to control, through a computer-telephony controller, operation of a communications terminal. The computer-telephony controller receives from a first computer terminal a request for a first computer-telephony event; in which the request for the first computer-telephony event comprises a label value. The computer-telephony controller refers to a mapping between the label value and an identifier of a communications terminal; and initiates the requested first computer-telephony event controlling operation of the communications terminal. The computer-telephony controller then receives, from second computer terminal 2B, a request for the label value. The computer-telephony controller authenticates the label value request and provides to second computer terminal the requested label value.

Abstract: Computer-telephony events are initiated by a user operating a computer terminal to control, through a computer-telephony controller, operation of a communications terminal. The computer-telephony controller receives from a first computer terminal a request for a first computer-telephony event; in which the request for the first computer-telephony event comprises a label value. The computer-telephony controller refers to a mapping between the label value and an identifier of a communications terminal; and initiates the requested first computer-telephony event controlling operation of the communications terminal. The computer-telephony controller then receives, from second computer terminal 2B, a request for the label value. The computer-telephony controller authenticates the label value request and provides to second computer terminal the requested label value.

Abstract: The system comprises a client and a set of servers for processing calls in a communications system; the servers providing call status messages to the client; in which each call status message comprises an identifier associated with the call to which the message relates. The client is arranged to handle duplicate copies of call status messages as follows. The client receives a copy of each call status message from each of the servers and identifies duplicate copies of each message received by reading the identifier in the received messages.

Abstract: The invention concerns an integrated computer and telephony system and a method of integrated computer telephony in which at least one main is switch is capable of receiving incoming telephone calls and of dialling outgoing calls. A computer terminal is associated with the switch and means are provided for recognising that a telephone number connected to the switch as an incoming call is associated with said computer terminal; together with and means for causing said computer terminal to give an indication that an incoming call has been received, with the call being held by the switch so that the computer terminal indication is without the telephone being caused to ring.