[Asterisk-biz] PRI and echo cancelation ...

[Eric Wieling aka ManxPower]

> From: "Michael Blood" <Michael at Matraex.com>

> Agreed,  this should be on the Users List.
> My experience has been that PRIs have much less trouble.
> The echo typcially comes from the analog to digital conversion.
> I personally believe the reason for this is that the Analog to Digital
> conversion that happens at the telco is done with much higher quality
> equipment with much higher quality echo cancellation than if it is done on
> your asterisk box.

As far as I can tell most local telcos don't do echocan on for local calls.