Re: Designing your own phone ring tone
The old Nokias did indeed send SMS in morse.
My Motorola has the names of my regulars in morse as their individual ringtones - I know who's calling without taking the phone out of my pocket and without having to remember which tune is who.
They are MIDI files, produced with a freeware MIDI editor, and they are tiny - the biggest is about 300 bytes.
If you get the timing right, a dot is a quaver and a dash is a dotted crotchet. The space between characters of one letter is a quaver rest; between words is a dotted crotchet rest; and away you go!