At 19.22 04/02/2007, you wrote:
if you want exact cdr records, you must go digital.
There's still something I don't understand: when using a simple modem on an analog line, you get correct answers from the modem: "NO ANSWER", "BUSY", "NO DIALTONE", etc... why is this possible with these TDM2400 cards that cost twenty times as much? I know that I'm probably missing something... could you help me understand what?

Because the far end sends a carrier tone.

Ok, understood.
I see there's a call progress detector for Asterisk that seems to work only with the US telephony system. In fact, when I try to use it in Italy, results are completely random... it partially works for local calls that last longer than 20 seconds, but doesn't absolutely work with call addressed to cell phones, for example. Is there a way to configure it to work with other telephone systems? Is there someone who has tried to do it, for example, with the italian telephony system or some other european telephony system?

Thanks and best regards
Stefano
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