[Asterisk-Users] Static on TDM Zaptel FXO

[Jason Walker]

I'm not sure what type of "phone" you are on, but some of the SIP users at
my job get the echo when their MIC is turned up too much. The SIP phone,
from one * to another *, is hooked into ZAP channels.

SIP Client ----> SIP Server ----> ZAP Server ----> T1 connection

If the SIP Client goes too high with the MIC, no good.

Not sure if that helps. Or provides any insight. 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Gregory Wiktor
- ADCom Corp.
Sent: Tuesday, May 17, 2005 7:00 PM
To: Jeremy Parr; Asterisk Users Mailing List - Non-Commercial Discussion
Subject: RE: [Asterisk-Users] Static on TDM Zaptel FXO

On a recompile of the kernel I now get a 99.98 average.
Static is gone, although quality so far seems not quite there yet.

I am also experiencing an odd local echo.  I can hear a slight echo locally,
but the other end sounds fine, and the other end does not get echo.

Even with the pots disconnected, you can hear it.  The static would be on
all calls.  Hooking up a normal phone was ok.  The sip>sip phones are
perfect too, it was only happening on the zap channel...

Greg 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Jeremy Parr
Sent: Monday, May 16, 2005 8:05 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Static on TDM Zaptel FXO

On 5/16/05, Gregory Wiktor - ADCom Corp. <gw at adcomcorp.com> wrote:
> Hello All,
> I recently put in a zaptel 1fxo/1fxs card.  I am experiencing heavy 
> static.
> 
> Even with the pots line disconnected, if I do a dial I still get
static.
> This way I know it's not the line, but rather something on the card.
> 
> I tried alternate pci slots.
> 
> This card has a power connector, does anyone know what the power 
> requirements are?  The unit is in a small case with a 2.4ghz p-4 and 
> 512mb ram, on an intel board with 533fsb.  All other functions are
fine.
> 
> I am using the latest CVS on Debian 2.6test
> 
> Anyone experience this?

Have you tried a different phone? Does the static appear immediately when
you pick up the phone? Or on the second or third time?
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