The DVB standard implementation of Carrier ID (DVB-CID) is a signal embedded into a video or data transmission path to correctly identify a carrier when it is causing interference in the satellite network.
The identifier contains mandatory information such as a 64-bit MAC address and a vendor serial number, as well as optional user configurable data including GPS coordinates, the carrier name and user contact coordinates. This information is injected into the carrier by the modulator at the uplink site.
Special measurement receivers are installed at the satellite operator facilities. Whenever interference occurs, these receivers can read out the contact information from the carrier and quickly point out the source of interference. Resolving the interference issue is, in most cases, only a phone call away.