[asterisk-gui] Echo

[Bob Crandell]

Hi Noah,

I figured it out.  The module wasn't loading.  After I found out that
HPEC was an add-on I went back to the default and it is a lot better now
that the module loads.  It could still use some tweaking but at least
it's usable now.

This computer is a retired server that a client outgrew.  It's a dual
933 P III with 2 GB ram and mirrored 320 SATA drives.  There haven't
been any call quality issues.

Thanks for getting back to me and have a nice weekend.
Bob

On Fri, 2009-11-13 at 10:33 -0500, Noah Miller wrote:
> Hi Bob -
> 
> > I'm back tinkering with the echo problem again.  Out-going calls work with
> > this exception:
> > [Oct 22 13:48:16] WARNING[7846]: chan_dahdi.c:2027 dahdi_enable_ec: Unable
> > to en able echo cancellation on channel 5 (No such device)
> 
> You might have more luck asking this on the asterisk-users mailing
> list.  It's really more of a general question.
> 
> I don't have a whole lot of experience with HPEC, but just to check -
> you definitely have enough licenses for all 12 channels?
> 
> On another note: 12 channels of HPEC will require a lot of processing
> power.  I remember that one system that I worked with that used HPEC
> had sustained CPU usage of up to 70% when using just four channels of
> HPEC.  It was a Pentium D 2.8ghz.
> 
> On yet another note: you have three TDM400's in one box?  That's a lot
> of interrupts to service (3000 per second).  Do you ever have call
> quality issues (other than echo)?  I guess a lot of the systems I work
> with are older or lower power, so maybe newer, faster hardware can do
> this.
> 
> 
> - Noah