[Allstar Digital] DMR and dv3000

Steve N4IRS szingman at msgstor.com
Wed Nov 11 14:29:24 EST 2015


Robert,
Mathew seems to be working from the repeater with a entitlement key to 
allow audio to be sent via what I believe is SIP to and from Asterisk.
You will have to ask him about that.

We are grabbing IPSC data from the bridge and routing it to what the 
bridge THINKS is a Mototrbo repeater. From there, the AMBE packets need 
to be formatted into a frame that the DV3000 can understand and decode 
into PCM. That PCM is passed to The USRP channel driver and into 
asterisk. AllStar sees it as a node just like any USB or PCI Radio card 
etc.     DMR-MARC --> Bridge --> Formatter --> DV3000 --> USRP / 
Asterisk. And back the other way of course. This is all software except 
for the DV3000.

Steve N4IRS

On 11/11/2015 10:01 AM, Robert Newberry wrote:
>
> I'm trying my best to understand this. It's my understanding that 
> maybe using a mototrbo repeater and feeding the digital data steam 
> into a DV3000 we should get a ulaw or pcm or something in analog out 
> the other side right? Is my simplistic understanding of this right?
>
> I have a xpr8300 sitting on a shelf I can experiment with? I'm 
> guessing there is a big gotcha here I'm missing like my simple 
> understanding is not so easily done.
>
> N1XBM
> Apparare Scientor
> Paratus Communicare
> Allstar Node # 27086, 41540, 41812, 42086
>
>
>
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> Allstar-Digital at lists.keekles.org
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