This is related to Pacific Timezone w/ DST. The phones are one hour early in all cases with Fanvil X4 and X5s phones on multiple PBX instances. All are V15 SP3 with std templates & updates current to 3-12-18.
Mountain time -7 here, 100+ Fanvil X5 phones on latest firmware that are behind an hour.
am in the Eastern time zone as well, about 50 Fanvil X5Gs. What's seems weird is the X5S is not effected. Would love a system fix for this (or phone firmware) rather than a template and reprovision.
I apologise for any confusion. For your timezone the issue has been confirmed for all devices and will be fixed as mentioned. For other timezones the issue is a bit different as older models are affected but not the newer models. These need different settings.Each scenario is different that is why i am replying differently to each affected person.Unfortunately, in our case, we see the problem with X5s phones as well. Maybe a generation issue, but these are recent (2017.5) X5s phones.
I am in the Eastern time zone as well, about 50 Fanvil X5Gs. What's seems weird is the X5S is not effected. Would love a system fix for this (or phone firmware) rather than a template and reprovision.
Unfortunately, in our case, we see the problem with X5s phones as well. Maybe a generation issue, but these are recent (2017.5) X5s phones.
I am using 3CX Professional 15.5.9348.3 with 3 different hardphone vendors: Htek UC912G, Yealink T23G and Fanvil X3S. I confirm this problem also on Fanvil X3S.
V15.5 SP4 was released a little while ago and should contain the fix for the Fanvil DST problem. for the people still having it, I would recommend installing SP4, then reprovision all your Fanvil phones that have the issue.
Note: If you will download the template updates without installing SP4 for whatever reason, make sure you:
- Download the template updates.
- Restart the Management Console service (so that the new templates are immediately parsed)
- Reprovision phones
I'm glad you found another time zone that changes the phone time correctly.I found the problem. I choose +2 Romania (Bucharest). Probably is a problem with (Bucharest), if I choose +2 Riga its working![]()

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