We had distinctive ringing on an ISDN derived line, but not quite the same thing
MSN 1 - Short-short (UK/IRL standard ring)
MSN 2 - Long (European Style)
MSN 3 - short-short-short
The only time I heard distinctive ringing on an analogue line here thesedays is if you accidently hang up on a call that's on hold (i.e. during call waiting / if you press R)
You'll get short-short-short-short
Same ring applied if you set ringback when free. (camp on busy)
and RINGBACK + number will display on the CLID.
