[Asterisk-Users] Sangoma E1 board Experience

[janvb at caselaboratories.com]

> 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.

Never looked to close into these standards, but my understanding of echo 
cancel is that you need to buffer voice for 2 reasons (1) the algorith 
itself and (2) to cope with latency so the algorithm actually can work?

jan