Hytera DMR System Planner
169
In IP Multi-site Connect mode, the repeater will add a silent frame as compensation
to the voice or data packet lost during transmission. Accordingly, the communication
with a terminal will be discontinuous. In case two voice and data packets are lost
consecutively, the repeater will judge the call as abnormal and abort it automatically.
Then no repeating is available unless new voice and data packet or call request is
received.
If the data packet delay occurs to the digital service for more than the defined
duration in the Jitter Buffer, the packet will be lost, resulting in acknowledgement
failure.
5.3.7 Telemetry
This feature is available in digital mode with DMR terminals. It does not need to be
activated or deactivated manually. However, you shall configure related commands
to use this feature properly. If you do not need this feature, do not configure any
telemetry-related commands. Your terminal will not be affected at all.
Telemetry command is also subject to the TX rules-the same as other TX operations
with the terminal in digital mode. To send the telemetry command properly, it shall
satisfy these conditions: the telemetry command is configured correctly, the channel
is free, the color code is free, the source terminal and target terminal use the same
frequency and use the same slot (in Repeat mode). Additionally, the source terminal
shall not be set to “Receive only”.
In the following conditions, the telemetry command can not be sent either: not
associating the feature with a programmable key (if sent via the programmable key);
not associating VIO with GPIO (if sent via GPIO status change). Therefore, be sure
to configure the telemetry feature correctly.
The telemetry command failure includes the following types:
Error message will be given if no reply is given after the telemetry command is sent.
The reason may be that the target terminal does not receive the command, or that
the channel of target terminal is busy, disabling it to reply.
If the target terminal fails to reply to the source terminal after receiving the command,
the reason may be that the telemetry command is not configured properly at the
source terminal, no telemetry VIO is specified or mapped, the target terminal is not
configured properly or other reasons (such as failed to get GPIO status). Please
note that no reply will be given for group call.
For a terminal in TX mode, it can not receive any telemetry command; when it is in
RX mode, it can receive the telemetry command, but the precondition is that the
signal strength of source terminal is stronger than that of the one transmitting to it.
Summary of Contents for PD70X Series
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