Multi-satellite link is – according to article 1.114 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR)[1] – defined as «A radio link between a transmitting earth station and a receiving earth station through two or more satellites, without any intermediate earth station.
A multi-satellite link comprises one up-link, one or more satellite-to-satellite links and one down-link.» Each station shall be classified by the service in which it operates permanently or temporarily.