Inter-satellite service (also: inter-satellite radiocommunication service) is – according to Article 1.22 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A radiocommunication service providing links between artificial satellites.»
In accordance with ITU Radio Regulations (article 1) variations of this radiocommunication service are classified as follows:
Fixed service (article 1.20)