Inter-satellite service

Inter-satellite service, also known as inter-satellite radiocommunication service, 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.

[1] In accordance with ITU Radio Regulations (article 1) variations of this radiocommunication service are classified as follows:

Inter-satellite service to Earth directly or via three relay satellites orbit.