A system comprising a source and a destination proxy, said source proxy for transmitting one or more TCP packets sent from a source device to a destination device over a wireless link, each TCP packet comprising a TCP data section and a TCP packet header, wherein the source proxy is located on said wireless link and is configured to: - receive said one or more TCP packets; - determine a simple compression mode packet from said one or more TCP packets by removing the TCP packet header comprised in each TCP packet, said simple compression mode packet comprising the TCP data sections comprised in said one or more TCP packets and a header that comprises a connection identifier; and - send said simple compression mode packet to a destination proxy located on said wireless link, the destination proxy being configured to: - receive said simple compression mode packet and acknowledge reception to the source proxy; - determine one or more reconstructed TCP packets by extracting the data sections of each TCP packet from said simple compression mode packet; and - send said one or more reconstructed TCP packets to the destination device. wherein said connection identifier identifies a connection between said source proxy and said destination proxy,, the header of said simple compression mode packet further comprising: - a first next field representing a number of the simple compression mode packet sent by the source proxy and being incremented by one each time a simple compression mode packet is sent by the source proxy; - a second next field representing a number of the simple compression mode packet received by the source proxy from the destination proxy and being incremented by one each time a simple compression mode packet is sent from the destination proxy to the source proxy; - a third next field indicating if a connection end is delivered by the source or the destination. - receive said one or more TCP packets; - determine a simple compression mode packet from said one or more TCP packets by removing the TCP packet header comprised in each TCP packet, said simple compression mode packet comprising the TCP data sections comprised in said one or more TCP packets and a header that comprises a connection identifier; and - send said simple compression mode packet to a destination proxy located on said wireless link, the destination proxy being configured to: - receive said simple compression mode packet and acknowledge reception to the source proxy; - determine one or more reconstructed TCP packets by extracting the data sections of each TCP packet from said simple compression mode packet; and - send said one or more reconstructed TCP packets to the destination device. wherein said connection identifier identifies a connection between said source proxy and said destination proxy,, the header of said simple compression mode packet further comprising: - a first next field representing a number of the simple compression mode packet sent by the source proxy and being incremented by one each time a simple compression mode packet is sent by the source proxy; - a second next field representing a number of the simple compression mode packet received by the source proxy from the destination proxy and being incremented by one each time a simple compression mode packet is sent from the destination proxy to the source proxy; - a third next field indicating if a connection end is delivered by the source or the destination.