Tongjia TG328 digital interphone adopts a low-power and highly integrated SoC digital chip solution to reduce the complexity of the previous architecture and the probability of possible failure. It can realize 2-slot pass-through mode and relay station forwarding. 3 emergency alarm types and modes; 6 groups of programmable fast communication; 16 groups of basic AES advanced encryption; 256 channels and voice prompts can be equipped with 300 hours of call recording.