In the design of the conference room, it is necessary to avoid direct illumination of the top light and metering from the top or window, which will directly cause the impact.

The mcu wall riding mode requires modifications to the firewall in the original network ( such as open ports ).

The SIP () was adopted in June 2002 , which is the core specification for the SIP protocol .

GK can have only one prefix.

A rackmount MCU can have two main control boards, support master-standby switching, and only need to configure one IP address.