SIP Registration Fails after 3CX initiated firmware upgrade

[Mike Shintani]

We have roughly 30 Fanvil X5U and X6U phones. About two weeks ago the supported firmware was upgraded and all these phones displayed in red color in the Phones view. I used the 3CX initiated firmware update function to bring the phones into compliance. I did about 5 phones at a time. All 30 phone had their firmware updated successfully, however three of the 30 phones did not re-register upon the phone booting with the new firmware. The SIP Registration Failed error message was on the display. This happened on two X6U and one X5U unit. I power cycled these three phones and they came back and registered.

Can you tell me what causes phones that go through a firmware update, a reboot, to not register correctly? Then, after manually intervention of a reboot, and no other changes, these units come back and register correctly?

All ~30 phones are on the same LAN in the same physical space. They are behind three X6U SBC's at the moment as we are awaiting a pie to arrive to become the dedicated SBC.

 

[Charles_3CX]

Hi Mike, to know what happened here would require checking the logs from the system in verbose logging mode.

There are various reasons, but I can tell you that firmware upgrades make many changes to devices that can cause them not to boot up properly to register right away and require them to be restarted again to clear whatever is causing the issue. They are, after all, running a Linux operating system with a web server.

Essentially, they are mini-computers. We all know what happens to computers that sometimes require them to be restarted, and phones are no different.

 

[Mike Shintani]

It sounds like I should not be worried about what we experienced and that when firmware updates are applied to the phones I should expect that some phones might need extra reboot help. So, I should always have someone onsite to assist in the event manual assistance is needed.