Another Incoming Tease- Can you solve it?

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If you own one you are excluded from guessing.
You know who you are馃榾
Clue: You might notice something out of the
ordinary on this minute subdial?
 
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...but maybe how long you could phone/talk for a dime/pence/pfennig/枚re?
Universal phone-compax?
 
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...but maybe how long you could phone/talk for a dime/pence/pfennig/枚re?
Universal phone-compax?
not phone calls
 
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Maybe it was produced by the telephone company with intentionally misleading indicies to increase revenue
 
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Well this clue has turned out to be more trouble than help. 馃榿
 
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20 questions or guesses.
I'll add a clue after 10 used.
 
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Maybe it's a Roger Bannister LE?