It came to my attention that a way to answer phone calls, in Japanese, is by saying "もしもし" (transliterated
Please note that the "もし" (transliterated
Moshi) is repeated twice. I was quite surprised by this, as I think (from other languages I know) answering phone calls informally typically is preferred to be done by using a greeting with a rather short pronunciation.
I thus began wondering whether or not there are any other languages with such a repetition of phonetics, in answering phone calls.