[Asterisk-Users] Echo on Zaptel FXO :(

[Mike Dent]

I had a *lot* of trouble with echo when I first set * up! I'm using an
x101p clone.
The solution I found was to change 1 line in one of the zaptel source files and 
recompile.
The file is zconfig.h and I uncommented:
#define AGGRESSIVE_SUPPRESSOR

I've got 2 x101p cards in and I've got them on their own interrupts
too, which I found improved quality a bit:
[root at fleagle zaptel]# cat /proc/interrupts
           CPU0
  0:  624457515          XT-PIC  timer
  1:       1097          XT-PIC  i8042
  2:          0          XT-PIC  cascade
  5:   33339346          XT-PIC  eth1
  7:  624311389          XT-PIC  wcfxo
  8:          1          XT-PIC  rtc
  9:          0          XT-PIC  acpi
 10:    3905698          XT-PIC  eth0
 11:  624307523          XT-PIC  wcfxo
 12:         58          XT-PIC  i8042
 14:     585595          XT-PIC  ide0
 15:        475          XT-PIC  ide1
NMI:          0
ERR:          0


Hope that helps,

Mike

North west UK!



On Sat, 8 Jan 2005 23:33:30 +0000, Ian Chilton
<mailinglist at ichilton.co.uk> wrote:
> Hi,
> 
> > substantially lower (pretty much unhearable) on the NTL line compared
> > to the BT Line, so you have a fairly good chance (hopefully) of getting
> > a decent solution.
> 
> I hope so :)
> 
> 
> > 00:0a.0 Communication controller: Tiger Jet Network Inc. Tiger3XX
> > Modem/ISDN interface
> 
> Yeah, looks like the same as me:
> 
> 0000:00:09.0 Communication controller: Tiger Jet Network Inc. Tiger3XX
> Modem/ISDN interface
> Subsystem: Intel Corp.: Unknown device 0003
> 
> 
> > In the web interface of your Sipura go to Regional and change the FXS
> > Port Impedeance to 370+620||310nF. This is the correct impedance
> > setting for the UK and improved echo problems I had which only affected
> > the BT Studio 100 dect phones we have.
> 
> I already have that set :)
> 
> I did start thinking maybe it was the sipura but I only hear the echo on
> the calls through Zap, not when doing calls through VoIP providers which
> is why I think it's the Zap card.
> 
> 
> > Why don't you use the PSTN line on the SPA-3000 instead of the X100P?
> > People are reporting much better results with the SPA-3000's PSTN port
> > than with an X100P (in the UK).
> 
> Well, a few reasons:
> 
> outgoing calls - for some reason when I make a call from asterisk over
> the pstn line on, I get a ring 1st - like Brrrrring. This same thing
> happens when sending calls to the pstn port from the spa3k dialplan too.
> I mailed Sipura suport about it but they didn't come back with anything
> useful.
> 
> incoming calls (which are the main problem - I make most of my calls now
> over voip but my incoming calls still come in over pstn because that's
> the number people know) - the spa3k can't send a call to asterisk without
> answering it 1st (or it can with a funny setup that a guy posted to the
> voxilla forums which I dont think works right for some reason) and I
> want asterisk to be able to ring other phones with the call before it's
> answered.
> 
> both: i've had some strange noises using the pstn port on it - like
> interferance.
> 
> Thanks!
> 
> --ian
> 
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