Hello Dear Friends,I have the following test environment at hand.PABX: SPA8800 software version 6.1.7(GW) HW version 1.3.0AsteriskNow: Version 11.4.0Analouge Phones with 10X extensionsVOIP SPA508G/SPA502G phones 7.5.5 with 20X range extensionsAnalog...