Re: [Asterisk-Users] [ot] Grandstream hardware

[Leo Ann Boon]

Patent licensing is usually, like this:
a) direct licensing if you rolled your own implementation of the specs
b) indirect - if you bought an implementation from another vendor, case 
in point Digium licenses the G.729a binary from Voiceage.

Cheers

Eric Wieling wrote:

On Mon, 2004-01-19 at 14:01, Bob Knight wrote:
 

Scott Stingel wrote:

   

What *I* want to know is why someone has not made a CHEAP PCI card
       

with
   

4, 8, or 16 of these DSPs on it.  This kind of card would provide

  

       

Expanding a bit on Nicolas' message, DSP software is complex, and
     

there is
   

not a huge number of people who do it well.  So along with the board
     

layout
   

and production cost (not trival for a 6- or 8-layer board), you have
     

the
   

programming cost for both the PGA (programmable gate array) device(s)
     

and
   

the DSP.   You also have the cost of the DSP simulators, driver
     

development
   

etc etc.

All of these must be amortized over the number of boards you expect
     

to sell
   

- that's why the board price can get so high.  Dialogic's D600-2E1
     

JCT
   

boards etc cost well over US$10000.  The whole point of the
     

asterisk/digium
   

exercise is to move the complex software to the PC and take advantage
     

of the
   

economies of scale that it brings.

     

Don't forget power and HEAT!
When I was making Portmasters at Livingston/Lucent we made modem
boards
with a bunch of DSP's sitting on TDM's.  Some of those DSP's are great
BTU generators.  Some times you have to clock the DSP at slower speeds
just to
keep the heat down.
   

Did patent/codec indemnification come as part of the DSP product, or did
you have to do the indemnification separately?
_______________________________________________
Asterisk-Users mailing list
[EMAIL PROTECTED]
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
  http://lists.digium.com/mailman/listinfo/asterisk-users
 

_______________________________________________
Asterisk-Users mailing list
[EMAIL PROTECTED]
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
  http://lists.digium.com/mailman/listinfo/asterisk-users