Inter-satellite service
Inter-satellite service, also known as inter-satellite radiocommunication service or inter-satellite link (ISL), as defined by Article 1.22 of the International Telecommunication Union's (ITU) Radio Regulations (RR), is a radiocommunication service providing links between artificial satellites. == Classification == In accordance with ITU Radio Regulations (article 1) variations of this radiocommunication service are classified as follows: Fixed service (article 1.20) Fixed-satellite service (article 1.21) Inter-satellite service (article 1.22) Earth exploration-satellite service (article 1.51) Meteorological-satellite service (article 1.52) == Satellites == === Inter-satellite radiocommunications satellites === U.S. Tracking and Data Relay Satellite Artemis (satellite) European Data Relay System Indian Data Relay Satellite System Luch (satellite) (Russia) Tianlian I (China) === Commercial satellite constellations with inter-satellite communication === Iridium Starlink Kuiper Systems == See also == Communications satellite Radio station Wireless mesh network Laser communication in space == References / sources == International Telecommunication Union (ITU) Earth exploration-satellite service.