🚀 go-pugleaf

you can not use your program to detect the original caller's dn.
In the other case, if you apply for a special service from ptt called caller dn display,
and your interface card supports the no.7 instruction sets, you can try to do it;
You need to analyze the digital number from the line adn get the caller 's number.
That is too difficult to do for a personal programmer.
and , if you are using isdn, that will be easier, you need to study some reference notes about no.7
and know more about the isdn special service implements.
addoil bah
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