Re: [Asterisk-Users] Terrible crackling on analogue line and X100P card

Sat, 09 Apr 2005 09:31:23 -0700

I have a very similar problem that I have been grappling with for a while.  I've got a genuine TDM400P with four FXS ports and am using an Eicon Server quad BRI ISDN (using CAPI) for external calls.

To date we have had no luck at all in diagnosing this problem as we too have periodic problems where the crackling occurs only sometimes, but affects all calls that are in progress (including those using the TDM400P and SIP calls that do not).  Asterisk does not report any problems when this problem occurs, but it is sufficiently bad to force everyone to terminate in-progress calls (at which time everything works fine again).

Appreciate hearing if you guys find a resolution to the problem that you are having, as we have had zero luck so far.




dean collins wrote: 
I have a similar situation but it seems to vary from call to call
sometimes.

Using 2 digium genuine x100p's in a dell with riser card.

I'm wondering if it is something to do with the riser because it doesn't
seem to matter if I swap various cords, positions, etc.


Cheers,
Dean 




  
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:asterisk-users-
[EMAIL PROTECTED]] On Behalf Of Stuart Ford
Sent: Saturday, April 09, 2005 9:57 AM
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: [Asterisk-Users] Terrible crackling on analogue line and
    
X100P
  
card

Dear all ...

I'm experiencing terrible trouble with crackling and noise on an
analogue line connected to an X100P (compatible) card. I've checked
    
the
  
line with a normal analogue phone and it works fine, clear as a bell,
but any outgoing or incoming calls to Asterisk are almost completely
drowned out by loud crackling.

I've attempted to adjust the RX and TX gains, but to no avail. There's
also an echo, but only one way. I'm assuming this is a separate issue
    
so
  
I've not done much to investigate that, but I may be wrong so if it is
related does anyone have any suggestions?

I never had this trouble with ISDN, but then I wouldn't would I? :)

If anyone can wave a magic wand, or at the very least point me to a
website where I can get my own magic wand, please let me know.

Thanks

Stuart


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