Improvements in or relating to the establishment of packet-based communications

摘要

According to an embodiment of the present invention, there is provided a system for establishing a connection between a first and a second communication device. The first communication device supports separate voice and data channels and is arranged for sending a pair of a first and second establishment requests, the first request being sent via the data channel and the second request being sent via the voice channel. The system comprises a proxy for receiving the first request via the data channel, and a gateway for receiving the second request via the voice channel. The gateway is arranged to forward the received request to the proxy and the proxy is arranged to forward the earliest received request of the pair of requests to one of a plurality of call control servers for processing.