Hytera PD70X Series, System Planner Manual

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Hytera DMR System Planner
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The network establishment and configuration are determined by the devices and IP
network. You’d better get help from the network administrator due to the complicate
networking environments.
Some common factors are listed below:
1) Ensure that there is no conflicting IP address, which can break off communication.
If the DHCP option is selected, the static IP address might as well be outside the
range of the addresses which are available to be allocated. It can avoid the
conflicting address assigned by the DHCP server.
2) The Quality of Service (QoS) can be introduced to the router in the Ethernet
network to assure you quality communication, provided that there are other
networking devices acting as IP networking ones in
IP Multi-site Connect network.
In addition, it is necessary to enhance the communication priority and reserve
adequate bandwidth.
3) Be sure that the UDP port is free from restriction of the firewall. Otherwise, it can
block the IP address or the UDP port operated in IP network. For more information,
please consult the local network administrator or ISP.
4) It is better to choose an ISP who can provide unlimited traffic services, because
the voice transmission over internet may lead to heavy traffic. For an IP Multi-site
Connect network containing 5/15 repeaters, 20/65 GB traffic is required per month.
Required Bandwidth Calculation
Generally, the required bandwidth is calculated on the basis of the amount of data
transferred by one repeater in the IP Multi-site system. When two time slots in digital
channel are utilized simultaneously, such amount of data (including some additional
data) is about 50Kbps. If the total number of the repeaters in the system is N, the
bandwidth can be calculated according to the expression : (N - 1) * 50Kbps.
To access the network composed of RD98X, the terminal must comply with relevant
application layer protocol and provide authorization code during registration. The
protocol command is encrypted. To connect the terminal via public network, it is
recommended to use firewall.
From the DMR Tier II protocol, given a slot timing of 30ms each (dual slot = 60ms),
when operating under the IP Multi-site interconnect system, each repeater shall
need to transfer all the voice/data to all slave repeaters in a given 30ms. With a 30%
reserve margin for other activity that could arise and to guarantee the wide area
system voice/data transfer performance, this has tighten the transfer time from