Use devices from different áreas

Hi I have a Yealink W52P and one W52H from área Brasil, I bought 3 W52H but those are from North América área, even having all of those devices with the last firmware I am not able to syncronize those W52H from North Ámerica with my Brasilian base. There is any limitation related to the áre that those devices came from?

Thaks in advance Pedro Parada

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