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I allready tried that translated the mac-address and did a factory reset ( *** -> 99 -> MAC Address) That didn't help

Hi, I hava a problem with my HT486 Rev 2.0 What happened? I bought a HT486 with firmware 1.0.6.7. I had some trouble with the pass-trough function (with my dutch PSTN provider KPN). I contacted Grandstream tech support and they advised me to upgrade to the newest Beta (1.0.8.12). That...

same problem Someone allready a solution for this problem? Here i have this same problem on a HT486R2 FW 1.0.8.16