[Station X]

In post #9 you twice refer to "ringback" and give it two different meanings. Now you've changed your mind and posted a link to "Ringback Tone", something completely different.

In all the years I worked for POT/BT and two other telcomms providers it's not a term I ever heard used in the UK.

This thread is about a vintage telephone so I think that ring tone is most appropriate. We both know what we're refering to though regardless of what we chose to call it.