The system must be matched.
A system only needs an IP network address box, which needs to be located in a location accessible to all network devices such as mainframe and extension in the system.
When all network devices such as host and extension are in the same segment of LAN, the IP of address box is defined as any valid IP of that segment.
When all network devices, such as hosts and extensions, cross network segments in local area networks (LAN), the IP of address box must be defined as the IP of the top network segment (accessible by all network devices such as hosts and extensions).
IP address registration query, SIP service, audio and video for all network devices such as mainframe and extension
Agents, etc.
Power supply mode: external DC power supply.
