>>23
はい。
Recording it on my answering machine was what I thought of. I don't pronounce Japanese perfectly, but at least it's possible to understand (and I like to believe it is quite good).

It does seem more polite to say your name after saying hello, kind of letting the caller know who he or she is calling to. The part about not asking people to call back may also be because it would be rude to make them call again. I don't know.

Thanks a lot for your help, I will try to record it afterwards.