[Asterisk-Users] Sangoma E1 board Experience

[Steve Underwood]

janvb at caselaboratories.com wrote:

>
> hi Steve
>
>>
>> - 1ms ensured good EC convergence, using software EC. Adding delay 
>> really degrades the performance of an EC adaption loop. It may be a 
>> block size of 2 or 
>
>
> Yes, but...
>
> As mentioned some pentiums are not that happy about a 1ms block and 
> some oy the algorithms in the voice path need larger buffers anyway, 
> so why just not have the hardware do the buffering and let the Pentium 
> have a rest.
>
> But, well can't have everything I guess...

That can only happen if EC is done in hardware. For most cards it is 
being done in software. You don't seem to be grasping the hard real time 
nature of how EC works.

Regards,
Steve