Hytera PD70X Series, Руководство по планированию систем

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2 Brief Introduction of DMR Functions
DMR digital communications system realizes voice services (such as group call,
private call, all call, etc.), data services (such as text message, GPS data, ect.) and
supplement services.
This chapter mainly introduces some basic functions and their parameter
configurations of DMR conventional system.
2.1 Basic Parameter Introduction
DMR configurations involve some basic parameters which determine the basic
attributes of DMR equipment.
The main parameters are as follows:
Radio ID: The unique identification information of each radio. You must designate an
ID to the radio for other users to identify it when making a private call or sending
messages. The private call ID is the Radio ID.
Group Call ID: Used to identify a particular group. The group members must define
the group call ID, or they cannot receive the corresponding call.
Alias: The alias of a radio, private call contact and group call contact. It is
configurable for you so that it is more convenient to find the contact to call.
Channel: The channel provides communication services using the DMR digital
signaling. There is at least 1 digital channel and at most 1,023 digital channels that
can be established.
Color Code: This is used to identify a system. Users who wish to communicate with
each other in the same system are assigned with the same color code. A radio
ignores the channel activity which does not match the preset color code in this field,
as it is assuming the activity belongs to other system. In case that there are multiple
systems to be monitored, then different color codes must be assigned to the
corresponding channels. Range of the color code: 0 – 15.
Tx/Rx Frequency: The Tx/Rx frequency of the current channel. Both the frequencies
of the communicating parties must be matched.
ˆ Tx Admit: This is used to control the Tx authority of the radio. The administrator
can authorize different levels of users to different Tx rights: the low level users
can be authorized to Channel Free or Color Code Free; as for the high level
ones, they are set to Always Allow.