olemus
koht ja aparatuur kaabeltelevisiooni saadete
antennist vastuvõtuks ja kaabelvõrku saatmiseks

Wiktionary:
a cable TV control centre, at which terrestrial and satellite signals are received, monitored and injected into the cable network

ülevaateid
https://www.techopedia.com/definition/7550/headend

https://en.wikipedia.org/wiki/Cable_television_headend

https://www.headendinfo.com/digital-headend/