[asterisk-users] Digium TDMXXB and Electronic Noises

[Tim Nelson]

I second that. IRQ issues are more than likely causing the problem. Check your interrupts and see if your TDM cards are sharing IRQs with any other devices. From past experience, I know we would get the same behavior when an analog card was sharing an IRQ with a storage controller. Any amount of disk activity would cause little blips and beeps in the audio stream. Make sure you have all extraneous unneeded devices turned off in the BIOS.

Tim Nelson
Systems/Network Support
Rockbochs Inc.
(218)727-4332

----- Original Message -----
From: "Steve Totaro" <stotaro at totarotechnologies.com>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" <asterisk-users at lists.digium.com>
Sent: Thursday, January 31, 2008 11:34:18 AM (GMT-0600) America/Chicago
Subject: Re: [asterisk-users] Digium TDMXXB and Electronic Noises

On Jan 31, 2008 12:28 PM, Matthew Yingling <matt at xenotran.com> wrote:
> I recently moved an installed and working Asterisk system from one PC to
> another.  I moved two Digium TDMXX cards and the OS as well  (a live
> distro).  I tuned the hardware on the new PC, but for some reason analog
> calls periodically have some electronic noise.  It's like beeps, but more
> musical.  I do not recall noticing this on the old PC, but immediately
> noticed it on the new system.  Since the hardware and the OS are the same,
> I'm not sure what could be causing this issue, or how to remedy it.  Any
> ideas?
>
> Thanks,
> Matthew Yingling
>

IRQ issues i would suspect.

Also,just because two machines are the same make and model absolutely
does not mean that they have the same hardware.  I have seen exact
server models ordered from CDW at the same time have very different
chipsets.

Thanks,
Steve Totaro

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