A device is operative to send packets in a packet communication network having at least two stations. According to an exemplary embodiment, the device operates by: extracting image pips on the basis of a synchronization signal; initializing a first counter on the basis of the the image pips; initializing a second counter according to zero-crossings of the first counter; sampling the second counter every period Tsmp, where Tsmp emanates from a time base synchronized on all the stations of the network; sending packets containing the samples of the second counter in the network; receiving at least one phase deviation value Δφ to be applied; and sending the at least one phase deviation value Δφ in the network. The present invention also pertains to a device operative to receive packets in a packet communication network having at least two stations.