ˈdial tone BrE AmE noun [countable]
American English the sound you hear when you pick up the telephone that lets you know that you can make a call SYN dialling tone British English
ˈdial tone BrE AmE noun [countable]
American English the sound you hear when you pick up the telephone that lets you know that you can make a call SYN dialling tone British English
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012