Abstract: Method and system for transmitting packets of different data types from a sender client to a receiver client over a server client connection established in a packet switched network, where a transport protocol connection for each data type to be transmitted is established between the sender client and the receiver client using the server client, the data transfer rate of one or more data type connections are measured at the server client, which transfer rate is sent as feedback information to the sender client, the sending rate at the sender client is adapted based on the feedback information from the server client and the transfer rate measured by the sender client, data types are prioritized in priority and non-priority delay sensitive data types by marking the data packets, non-priority data type packets are dropped at the sender client if the transport connections dedicated for non-priority data are too busy to send more data, the individual data types are separately buffered at the server, non-priority d