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g4klx / DMRGateway

A multi-network DMR gateway for the MMDVM.
GNU General Public License v2.0
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DMRA Frame Format #100

Closed marrold closed 3 years ago

marrold commented 3 years ago

Hi Jonathan, I've encountered an issue with parsing DMRA Talker Alias frames in hblink3 - https://github.com/HBLink-org/hblink3/issues/8

If possible please could you confirm the structure of a DMRA frame?

Thanks

g4klx commented 3 years ago

Hi Matthew As far as I can tell, it’s like this:

The format of the DMRA message is:

Number of bytes  Description

4                'DMRA' in ASCII

3                The DMR Id of the repeater, MSB first.

1                The type of the following TA data, 0 for the header, 1 for block 1, 2 for block 2, 3 for block 3.

7                The TA data, the 56 bits described in sections 7.1.1.4, 7.1.1.5, 7.2.18 and 7.2.19 of ETSI TS 102 361-2V2.4.1 (2017-10).

The data can be in many formats potentially, not just ASCII. Jonathan G4KLX 

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On Friday, January 15, 2021, 14:41, Matthew Harrold notifications@github.com wrote:

Hi Jonathan, I've encountered an issue with parsing DMRA Talker Alias frames in hblink3 - HBLink-org/hblink3#8

If possible please could you confirm the structure of a DMRA frame?

Thanks

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marrold commented 3 years ago

Thought I'd already replied to this one - Thanks for the info