I disable 3 ports (17 ports enable) and tried by shortest serialization delay (312 msec per Gateway, 5.304 sec per port) and the error appears continuously.
It is funny, I have a VS-GW1600-4G (4 ports) which doesn´t display errors (serialization delay of 1.250 sec per Gateway, 5 sec per port) which transmits aprox 2,200 SMS /Hour while VS-GW1600-20G is tramiting aprox 5,100 SMS.
VS-GW1600-4G (550 SMS/HOUR per port)
VS-GW1600-20G (300 SMS/HOUR per port)
Sorry for the trouble.It is convenient for you to show me your problem via remote?Both teamviewer(veriosn 11) and AnyDesk are ok.
You can aslo add me as your skype friend for a convenient contact.My skype: This email address is being protected from spambots. You need JavaScript enabled to view it.