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There was an issue about ECN which is a method for congestion control of TCP a year ago. The issue occurs where some operating system which enables ECN field such as Windows Server 2012. In my opinion, the problem you are going through is the same with that. We had been made a new firmware to solve it and you can download it with the link below. <a href="https://www.eztcp.com/en/download/pds_files/EZL-50L_R13A.BIN" target="new">Download EZL-50L firmware v1.3A</a> Please try it again with this new firmware. About the RJ45 thing, it is not possible to use RB106BAG1A with EZL-50L. We recommend using BS-RB10072 or BS-RB10073 instead. Thank you. > charles wrote: > ------------------------------------ > HI(Roy) I work few years with the EZL50L so far was ok ,, in the last 500 units > many have problem in connection( very slow to connect) it mean when the EZL50L ok it connect in 1 sec,when it not more the 10sec & my socket TOT close before it connection > when i test with Telenet it connect after more than 10sec. last mac address 0030f91316aa.......the rj45 i use is the RB1-0072. i change the modules & some working properly ,some not with the same divice?????? what can be the problem > > some device was connected with rj45 RB106BAG1A it work same !! it is a mistake to work > with rj45 RB106BAG1A with the EZL50L??? > > best regards > charles
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