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Dahua IP intercom: VTO3211D-P2 (new P & P4 ) door station - experience, review, firmware support?
Hi I have bougt VTO3211 and VTH5221. Bu I get VTO3211 with firmware 1.0 (on box I see date 2018-10) and VTH5221 with firmware 4.4. May I update firmware on VTO to 4.4 or is some diferent hardware inside VTO that support SIP from the box? thanks