Currently, I am running 15.0.2.13 and my Grandstream phones connect to my lan PBX just fine but I am unable to hear anything when I make or receive a call. Basically my extensions see the incoming call but when I pickup the phone it’s just dead air.
Are your phones and your PBX on the same network? If they are, probably a codec issue. If they are not, probably a NAT issue.
I had to revert back to 14. Not sure why 15 wasn’t working, the only thing I didn’t install was the digium addons.
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