Abstract: A call processing system (10) and method are disclosed. The connection status between a node (40) and a data communications network (20) is monitored. The node (40) is arranged to receive calls over the data communications network. Monitoring is by the call processing system (10). Rather than only performing a call connection when the called node is identified as being available as in conventional systems, if the call processing system (10) determines that the node (40) has been disconnected from the data communications network for a first predetermined period of time, the call processing system (10) is arranged to wait a second predetermined period of time before indicating non-availability of the node. In this way, unavailability determinations are reduced and call connection requests are processed even in situations in which the node (40) has been disconnected during the first period of time.

Abstract: A system and method are disclosed in which a secure voicemail repository (50) is arranged to receive calls for a recipient system (20) and record said calls in an encrypted form. The encrypted form is decryptable by a key associated with the handset. On demand, the encrypted form is provided to the recipient system (20).

Abstract: A communication trigger system and method are disclosed. A communications device (10) is monitored for predetermined identifiers input or selected on a communications device during actuation of a communication function and, upon detection of a predetermined identifier, a non-default communication function is initiated on the communications device.

Abstract: A call processing system (10) and method are disclosed. The connection status between a node (30) and a data communications network (30) is monitored, the node (30) being arranged to receive calls over the data communications network, wherein if a call connection request is received for the node within a first predetermined period of time of the node (30) having disconnected from the data communications network, the call processing system (10) being arranged to wait a second predetermined period of time before indicating non-availability of the node.

Abstract: A method and system for communicating packetized audio or audio-visual communications over a data communications network is disclosed. Packets meeting a predetermined criterion are identified and bypass integrity protection.

Abstract: A communication system and method include an intermediate router arranged to facilitate communication between any of a plurality of communication nodes over a data communications network. The intermediate router receives communications over the data communications network from a transmitting communication node for a receiving communication node. The communication includes a unique identifier of the transmitting and receiving communication node. The intermediate router includes a routing database, and is arranged to record the unique identifier of the transmitting communication node against the network address of the transmitting communication node from which the communication was received. The intermediate router is also arranged to route communications to receiving nodes by obtaining the recorded network address associated with the unique identifier of the receiving node and routing the communication to the recorded network address.