1) Aviation: call sign (радиосвязи), callsign
2) Naval: call signal
3) Military: address call sign, call sign, call-sign, calling signal, callsign (сигнал), code sign, designator
5) Telecommunications: "call" signal, authentication, alias
6) Special term: call letter
7) Advertising: call signal (сигнал), jingle
Универсальный русско-английский словарь. Академик.ру. 2011.