We loaded the latest firmware on 2 Epygi's yesterday One a Quadro 2x and one a Quadro 4x. The 4x is having no issues and its DSP Sowtware version matches the firmware update version ( 5.1.38) the 2x is having issues with outbound calling and its DSP shows as version 5.1.15 Wondering if this could be causing an issue, is the difference because one is a 2x and one is a 4x?