PSTN used to take that stuff out of circuit when it sensed modem tones. Try real modems or FAX, and then figure out how to fake them.
On Sun, Sep 9, 2018, 21:05 Đích Kiều <dich...@gmail.com> wrote: > Hi everyone, > > Anyone working on Freedv on PSTN network ? I’m have a problem about hybrid > echo cancel in PSTN network. Half-duplex freedv work well. But when I run > full-duplex freedv in PSTN, hybrid echo cancel from PABX make demodulator > don’t work. Anyone can show me how to resolve my problem? > > Thank you. > > Sent from my iPhone > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >
_______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
