[Asterisk-Users] Recommended FXO device

[Mike Fedyk]

Rich Adamson wrote:
> I've tested a large number of other external adapters and have not 
> found a single one that had a reasonable echo canceller built in. Many 
> of them work fine on short pstn lines (where echo is much less of a 
> problem), but provided even reasonable service on longer pstn lines or 
> lines that involve unusual telco configurations (eg, remote line 
> concentrators).
What about devices from audiocodes, ipgear/boscom and vegastream?  Can 
you give a list of products you have tested and your results as well as 
your testing environment and methodology?