Abstract: Gateway apparatus is described for interconnecting at least first and second signalling networks with an application server process via a third network, the apparatus comprising: a plurality of signalling gateways, with at least one signalling gateway coupled to each signalling network; and a proxy element for transferring signalling messages between the signalling gateways and the application server process via the third network. The first and second signalling networks may be separate signalling system 7 (SS7) networks and the third network may be an internet protocol network.

Abstract: A signalling gateway for connecting a first network to a second network, the signalling gateway being operable to store a plurality of routing keys, wherein at least one of the routing keys comprises monitoring destination information associated with a monitoring entity, the signalling gateway being operable to, receive a message via the first network, the message comprising message destination information identifying a recipient entity, compare the destination information and the routing key and, when the message destination information matches the monitoring destination information, transmit the message to the monitoring entity on the second network.

Abstract: Gateway apparatus is described for interconnecting at least first and second signalling networks with an application server process via a third network, the apparatus comprising: a plurality of signalling gateways, with at least one signalling gateway coupled to each signalling network; and a proxy element for transferring signalling messages between the signalling gateways and the application server process via the third network. The first and second signalling networks may be separate signalling system 7 (SS7) networks and the third network may be an internet protocol network.