Coin DSP patch introduces a regression by breaking faxing. Confirmed that this is an issue if any of the Asterisk systems involved have the coin patch.
There have also been discussions about rewriting the coin patch to not use the DTMF method (Goertzel algorithm) - Joe Z. had some ideas for this like using a sliding window approach, although Asterisk already appears to do this. In any case, this is a good opportunity to rethink the overall approach to this patch.
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