prank
v.— «Most people born after about 1977 will know that “pranking” is when you call someone up on their mobile phone but hang up immediately afterwards. It’s entered the vernacular as a verb, for example, “I’ll prank you,” or “just prank me.” When you prank someone, your number flashes up on their screen and is registered as a missed call. Your friend (or parents) can then call you back at their own expense and no cost to you.» —“Phone credit low? Just prank me” by Judy Skatssoon Mercury (Hobart, Tasmania, Australia) Sept. 26, 2007. (source: Double-Tongued Dictionary)
Also called “beeping” in Africa, according to this Reuters story: http://news.yahoo.com/s/nm/20070926/od_nm/africa_beeping1_dc