Quantar DIU replacement board

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kayfox

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So, speculative question, Im thinking of making a board to mate with this interface for the purposes of potentially replacing the DIU and more, probably an ARM chip on it, would anyone here be interested? What would you want on it as far as features?
 

MattSR

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Hi kayfox,

I have split this out into its own topic so that this idea can gain some momentum. It sounds like an interesting idea, as the wireline card is the interface for analog and digital signals, having a daughterboard that provides digital audio out would be beneficial too - I think DVSI actually sell chips now with IMBE on board, or it would be possible to send the voice frames from an interface out to one of the many DVSI boards that hold the IMBE codec.

Just wanted to make sure your idea didn't get lost in the other thread thats all :)

Cheers,
Matt
 

d119

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I'd be most interested in something like this - particularly for VoIP applications.
 

Astro Spectra

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MattSR is correct, DVSI do now offer a full P25 codec solution on a USB stick see:

http://www.dvsinc.com/products/usb_3k.htm

They are roughly 300 bucks each in one off qtys. This would allow kayfox to implement a DIU work alike without DVSI patent issues by including a USB type A host port on the board. Many ARM chip vendors have demo boards that do this.

Another option is to just use the ARM board to bridge between the Quantar wireline board (via J300) to USB or Ethernet and then use a standard Windows or Linux PC to implement both the DIU and console functionality. In that case the DVSI stick would go in the PC. This would be an easier to manage implementation as DVSI provide some Windows code to get started.
 
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