Does the ISS have a phone number? Do ISS astronauts have smartphones or handsets? And does anything in the space station “ring” when an audio call is set up? We spoke to the communications experts who help the world talk to astronauts on the orbiting International Space Station
Source:
https://www.newscientist.com/article/2218359-how-to-call-the-international-space-station/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home