Hey folks.
I've installed a Sangoma A200 PCI Express card with a FXO module in my server. It works OK however the card is very noisey.
I would expect better from such a good brand.
Any ideas?
Cheers
 
Sangoma Noise
Submitted by jonnytabpni on Wed, 05/21/2008 - 3:28pm.
Possibly the same here. Not
Thu, 05/22/2008 - 5:20am
Possibly the same here. Not sure if it is the card. I'll second the question!!
 
Can you explain this a
Thu, 05/22/2008 - 5:44am
Can you explain this a little more?
What exactly is noisy on the card? I've never used a PCI-e version but all the pci cards i've ever gotten don't even have fans on them or any moving parts. Is it' buzzing or what?
My trucks noisy too btw, can you fix that?
 
Noise on the line!! (Not the
Thu, 05/22/2008 - 6:46am
Noise on the line!! (Not the actual card)
 
does anyone have any ideas
Tue, 05/27/2008 - 12:28am
does anyone have any ideas on this?
I just did a reboot of the box and now the line make loud crackling noises when speech is heard.
 
Have you tried hooking up a
Tue, 05/27/2008 - 6:17am
Have you tried hooking up a test phone to the line to make sure it's not just the line?
Have you tried different ports on the card?
Have you tried a different phone to make sure it's not the phone?
Have you called sangoma?
I can't see it being the card but anything is possible I guess
 
In my case i just hear an
Wed, 05/28/2008 - 2:05pm
In my case i just hear an obvious hiss. this may be due to analogue lines, but a normal phone on the same lines does not have the same level of hiss.
There was a crackle when someone spoke, you'd hear a related crackle, but I turned the gains down and it improved.
Different ports have the same level of hiss.
I there somwhere to reduce high frequencies, a bit like dolby noise reduction or even just a graphics equaliser.
Just to note/recap there is a level of hiss present on external connections that is not there on internal calls.
 
did you set your gains using
Wed, 05/28/2008 - 2:32pm
did you set your gains using ztmonitor?
 
ok i have never used
Thu, 05/29/2008 - 12:47am
ok i have never used ztmonitor - what is it?
I adjusted rxgain in zapata.conf (or was it zaptel.conf??) to 6.0
It's not the phone line - it does it without a line connected. the PSTN line connected directly is actually fantastic quality (better than what I would expect).
It's def something to do with the card and not the phones/line.
I havn't phoned sangoma. This noise is only audible on my end - the remote party is fine.
 
Background noise on FXS with Sangoma A200
Sat, 06/07/2008 - 6:55am
Same problem for me with Sangoma A200 card.
I have also tried to change PowerSupply, Analog phone, PSTN Line, Sangoma Card (a new A200) but without any results: the background noise on the FXS port remains.
Sangoma support guys didn't give me any right solution. I think the problem is related to magnetc field and hardware filtering which is not good enought.
With digium's TDM analog card, there wasn't any problems.
 
Wow...I think you just have
Sat, 06/07/2008 - 8:32am
Wow...I think you just have some bad luck. I've had some REALLY crappy lines and no matter what the sangoma cards just work. Pretty weird to hear this
 
How are you adjusting the
Sat, 06/07/2008 - 10:18am
How are you adjusting the line gains........ARE you adjusting the line gains??? Just saying "it's noisy" doesn't help much. Not knowing what ztmonitor is kind of makes me wonder if you have it set up right.
 
Quote:
Not knowing what
Sat, 06/07/2008 - 2:09pm
Quote:
Not knowing what ztmonitor is kind of makes me wonder if you have it set up right.
ouch!!!
my rxgain is set at 6.0 and my txgain is at something similar.
The noise remains when even when you remove the PSTN line.
I think the noise is due to the interferance from the PCI Express bus. It probablly differs between servers and it probably just very noisey on mine.
 
In my case I think it's
Sat, 06/07/2008 - 4:17pm
In my case I think it's someting like a magnetic field not right filtered by the card.
Tommorow I'll try zmonitor tuning
Good night
 
What kind of machines are
Sat, 06/07/2008 - 4:48pm
What kind of machines are you using?
 
Just for giggles what
Sat, 06/07/2008 - 6:43pm
Your adjusting FXS gain as well as FXO correct?
I've never used FXS ports so not sure where you adjust that.
I think you add FXS gain statements afte the fxo_ks statement and then add gain statements for FXO after the fxs_ks statement in zapata.conf. The terminology is kind of confusing.
For giggles maybe turn your gains down to -10 and see what happens.
 
When you say FXS gain what
Sun, 06/08/2008 - 4:12am
When you say FXS gain what do you mean excatly? I just have an FXO module..
I'm using a cheapy HP Proliant ML110 G5
 
My bad. I thought you said
Sun, 06/08/2008 - 9:50am
My bad. I thought you said you were using FXS modules but I guess I confused it with another thread.
 
Does anyone have any ideas
Tue, 02/16/2010 - 4:35am
Does anyone have any ideas on this?
The line noise is as bad as ever...
Maybe i should think about changing to a different server?
 
Hi,
Please go to
Tue, 02/16/2010 - 1:56pm
Hi,
Please go to http://wiki.sangoma.com/SangomaTechSupport#analog and send everything here into techdesk@sangoma.com along with a description of the issue.
--
Marc
 
Member Since:
2007-03-21