Hi Trever,
I don't think so, it seems that that jira is for a non-SIP based setup.
My "issue" is that when calling a PSTN number from a mobile/landline phone, which gets delivered by SIP to my FreeSwitch server and then routed out to another PSTN number (via the same provider). When either party presses a digit, the other end hears the tone. The tone is not the whole tone just a fraction of it, maybe half a second, but enough to tell the difference when different keys are pressed. The key can be held for a long period, say 3 seconds, but you will only hear the "bleeding".
I have drop_dtmf set to true on both channels (set and export), but I'm not sure if this would make any difference anyway as the tone is being sent out-of-band.
It might also be worth noting that I don't get any duplication of tones. Pressing 123 will always receive 123 and not 112233.
thanks
Matt