1Business Port 50001
Master
In the process of IP connection, the two slots could
transfer IP connect business at the same time.
RX 470.0
TX 480.0
Code 5
RX 175.0
TX 186.0
Code 8
RX 370.0
TX 380.0
Code 15
Receiving network data information from other repeaters through network
card, then send to radios which within the cover scope through RF.
Network
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DHCP: Dynamic Host Configuration Protocol, LAN network protocolworked by UDP
protocol, it is mainly to assign IP addresses automatically for internal network or internet
service providers.
Repeater could acquire address automatically from DHCP router which already opened
if the parameters have been selected, in order to reduce the configuration time and
avoid address repetition.
Buffer queue length: repeater usually have abnormal voice problem because of network
delay during reception. According to the current bandwidth, if make appropriate adjustment
on buffer queue length could provide some optimization. Each unit delay from 60ms to
480ms, only react in the process of repeater receive the network business.
P2P firewall open time: after registration completed, master repeater and slave repeater need
maintain connection by heartbeat packets, this parameter is just the time of how long a
heartbeat packet will be sent.
Port Explanation:
Mater UDP ports: IP Internet UDP port, require master and slave repeater is consistent, its
main purpose is to ensure consistent protocol port, for registering and maintaining the
connection.
IP Internet business port: pure business port which used for users to transmit voice, data
and other business. Also require master and slave repeater is consistent.
Remote Repeater Diagnostics And Control port: used for RDAC communication, request
keep consistent with software.
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Channel slot selection is very important, if configured IP connection, but did not select the
appropriate time slot, the network is ok, but the current channel could not transit data
through the IP Internet, only could transit the data under the coverage of this repeater.
Slot 1: Repeater will achieve IP internet transit through “slot 1” when it works in the current
channel.
Slot 2: Repeater will achieve IP internet transit through “slot 2” when it works in the current
channel.
Slot 1 & Slot 2: Repeater will achieve IP internet transit through “slot 1” and “slot 2” when it
works in the current channel.
Network Parameters Introduction
IP Multi-Site - Slot 1 & 2 Configuration
Considering the following network, the repeater uses slot 1 and slot 2 to
exchange data with other repeaters in an IP Multi-site Connect network.
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……
Single-Layer network could support up to 30 repeaters.
Master
The repeater, when accessed, would send out all data within 30ms. Needs to reserve 8~9ms to buffer within 30ms.
Each repeater need 0.7ms for reception.
Calculation:
Master
Calculation Mode / Bandwidth Requirement
(Total number of repeaters-1)*number of slots*Slot bandwidth utilization rate
ADSL ADSL ADSL
Networking Topology No.2
Private
network
Public
network
Master
Master
The bottlenecks of Super Master: the number of repeaters which related to master station
could not more than 30 repeaters.
Private Network & Private Network Connection
Public
Private
SW
Router must enable DHCP function:
1. Master must not use DHCP to avoid slaves not being
able to register because of IP address changing;
2. Subnet host is the same as above;
3. 2-layer switch doesn’t support DHCP function,
although slave uses DHCP function, if it connects with
the switch, this configuration is invalid.
Port forwarding needs the fixed IP of internal network, otherwise, once DHCP changes, port forwarding will
then become invalid.
Repeater DHCP Enabling
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Q: What if DHCP assigns the IP address successfully, but there is still no access?
AYou can only identify internal network IP manually and then do the port forwarding.
Repeater DHCP Enabling
SW
Port forwarding needs the fixed IP of internal network, otherwise, once DHCP changes, port forwarding will then
become invalid.
Slave 4
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One purpose of NAT is to translate the address on the public network to the address on the private network.
Network
We can use port forward to make sure successful connection
once P2P can not communicate.
Port forward is usually used on the
repeater that does not talk back.
x 10.0.0.2
We can use port forward to make sure successful connection
once P2P can not communicate.
Port forward is usually used on the
repeater that does not talk back.
x 10.0.0.2
2.Host checks its own IP address
3.Slave checks master IP whether it is correct and master operates normally?
4.Check router for normal operations
Possible issues:
2.Network cable broken
4.Network card is broken
Connection fails
Network Connection Icon:
Issue: Can’t access repeater via IP connection.
x
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Network
10.114.1.40
1. Slave IP address doesn’t have master IP;
2. Unchecked IP connection service port & RDAC
Solution:
2.Slave fills in the right master address;
Example 1: IP Scenario’s
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then the slave often gets disconnected.
Analysis: Check software and network. It’s ok,
but finds that the network port light doesn’t
flash normally after opening the front cover.
The light is on but doesn’t flash.
Solution: The hardware is broken, Please
replace with a new one.
Example 2: Repeater disconnected from network
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In general, Hytera repeaters have three interfaces:
• The Ethernet interface – This is via the RJ45 Ethernet connector on the back of the RD982.
• The RF Air Interface – this is done via the transmitter and receiver using the ETSI DMR Open-
Standard.
• Requires sufficient bandwidth to pass voice and data between sites.
• Generally requires a stable latency of less than around 600ms**.
• Jitter as close as possible to zero.
•
• Supports VPN, NAT, VLANs, Firewalls etc.
** Based on customer feedback. The Hytera Engineering recommendation for latency is less
than 90ms.
Roaming List
Roam List is a group of channels under monitoring. A user can add or delete the
list according to the actual requirements.
Each list can include a maximum of 32 channels, with a minimum requirement of
two channels.
Available
This option allows the user to view all available channels. All digital channels with
the option IP Multisite Connect checked will be displayed in this list.
Note
Members
This option allows the user to view all selected roam lists. Each list can include 32
channels, which will be scanned in roam mode.
Option Description
Current channel
Up to 31 channels can be added from the Available List.
Note
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Active Site Roam
A radio with roam enabled, will try to transmit the voice or data information on
the master site first. When the repeater corresponding to the master site is
unavailable, the user can enable this option. As a result, the radio will transmit
a revival command to all associated repeaters, and switch to work with the
repeater found to be available. If all repeaters are unavailable, a out of range
message will be given.
RSSI Threshold
This option allows the user to set the threshold value of the RX signal
strength. It is deemed to be good when the signal strength value of a channel
is above the threshold, and the radio will skip to it in roam mode.
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