I was wondering if any of you have seen this with iaxRPT and app_rpt - 

but - if I keep all settings the same - and I set

invertptt=0 - 

iaxRPT works fine - audio through that gets copied out and HT's receive just fine - but; when I try 

to talk with the HT's - audio isn't received - node radio receives but the audio isn't xmitted through.

Now, if I set

invertptt=1 - then the HT's can xmit and iaxRPT 'hears' it - but now iaxRPT cannot xmit.

Has anyone seen this issue?  Hopefully just a config issue I have missed.

Maybe a weak pull-up or pull-down on PTT is needed?

73's,

John

AJ6BC