WTE TReX-460, User Manual

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TReX User Manual v15.30 Firmware
DMR Messaging
The TReX supports the transmission of short Digital Mobile Radio text messages, allowing
direct messaging to DMR radios. This is an optional feature.
The TReX has a partial implementation of the ETSI TS 102 361-1 DMR standard allowing for
DMR “Tier 1” messaging and therefore cannot be used in systems that have repeaters.
This is not a full implementation, and as a result has the following restrictions:
•
Messages are limited to a maximum length of 70 characters.
DMR messages can be sent when an input is triggered or through use of the WT protocol in a
similar manner as sending POCSAG paging messages. Refer to WT Protocol for usage
information.
The TReX concurrently supports POCSAG and DMR messaging, allowing an input to send
messages to both legacy paging systems and newer DMR radios. Additionally a POCSAG and
separate DMR database is provided allowing a message to be transmitted to many POCSAG
and DMR devices from the same serial protocol message. DMR transmissions may be on
different frequency than POCSAG transmissions.
Different DMR manufacturers have interoperability limitations. The TReX is similar in this
regard. Please refer to the Specification section for a list of tested DMR radios. The TReX
WT protocol allows for switching between supported radio types to allow support for Hytera,
Kirisun, Motorola and other brands.
All protocols implemented support direct DMR messaging. In order for a protocol to transmit
directly to a DMR radio the DMR_DB database should be configured with group IDs, together
with colour code, radio type and DMR radio frequency.
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Page 29 of 302