Hytera PD70X Series, System Planner Manual

Page: 139 / 182

Hytera DMR System Planner
135
4.3 IP Multi-site
IP Multi-site Connect is designed to extend the communication coverage by
connecting multiple repeaters in dispersed locations over a TCP/IP-based network.
In IP Multi-site Connect mode, DMR protocol is transported by TCP/IP protocol and
a Hytera-owned protocol at Application Layer. Accordingly, it is reasonable to
conclude that this mode only changes the DMR transmission media without
affecting the services of DMR terminals.
The figure below describes how IP Multi-site Connect works:
Figure 4.3-1: TCP/IP Model
z Physical layer: the lowest layer of TCP/IP.
z Network layer: also called IP layer. It is responsible for routing IP packets.
z Transport layer: to set up a session between the source host and the
destination host. It consists of Transmission Control Protocol (TCP) and User
Datagram Protocol (UDP).
z Application layer: to combine and realize the function of Session Layer and
Presentation Layer. It provides application-specific protocols.
As can be seen from the above figure, our IP Multi-site Connect function uses UDP
at Transport Layer and self-owned transmission protocol at Application Layer. At
Network Layer and Physical Layer, different protocols and devices may apply
depending on actual
IP Multi-site Connect can bring users these typical benefits:
1) To connect two or more conventional communication systems in different areas.
For example, you can use this function to connect two repeaters over a large
geographic area.
2) To construct a more effective communication area with wider coverage.