[Asterisk-Users] DS3000P - 20 E1 capacity on single card

[Matt Klein]

Kevin,
      Keep in mind that according to Wiki there are no DSP's on the 
board.....

-m

On Tue, 12 Apr 2005, Kevin P. Fleming wrote:

> tmassey at obscorp.com wrote:
>
>> In other words, a PCI-based co-processor would double the PCI bus bandwidth 
>> necessary.  And with a latency-sensitive product like voice, bus contention 
>> is not something you want to add to!  :)
>
> It only 'doubles the bandwidth required' when compared to a single-board 
> solution, which does not exist. When compared to doing the transcoding and 
> echo can in the host CPU, it would be a major win :-)
>
> Also, keep in mind that a DS3 is _only_ 45 megabits per second. Any PCI bus 
> (even lowly 33MHz 32-bit PCI) can easily handle 90 megabits per second of 
> traffic. People looking a DS3 cards are also likely to deploy them in servers 
> with multiple independent PCI buses, which would then allow for even more 
> bandwidth. The mind boggles at the possibilities!
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