I think I'm missing something about this DID suggestion, as I can't see it being more flexible or cheaper than other possibilities.
If people are talking about their own DID when abroad, do they mean set one up in the roamed country, or call one at home?
As I already said, some carriers do not forward DTMF and some not caller ID, so some people would like to predefine destination number rather than enter it at a gateway.
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