I forgot to mention that it almost always happens when you use speed 
dial, but it's only a short burst/chirp just after the line is 
accessed. I unplugged the cables from the modular jacks on the TVS 
port and the problem remains, so I know it's not the voice mail 
system.  I will try swapping out the CO lines.

Thanks for the help.  If I do find that the problems changes to the 
other CO, I'll know for sure it's not the TA824. Just checked and we do have a
WECO 5ESS (Digital) here according to telcodata.us .



Donald R. Resor
Los Angeles


At 04:31 AM 5/16/2006, you wrote:
>I don't see what being connected to a TVA50 VM has to do with accessing a CO
>line. Try swapping co lines in that position. See if the problem moves. I
>would tend to believe your customer is fed from a SLC or the co line is too
>hot. At least if the local CO is a 5ESS, there is a command a tech can run
>against the line to equalize it out. If the customer is on a SLC, I believe
>there is a bad SLC card. One way to check is to see what the level of 1000HZ
>is. You would need a test box that can receive 1000HZ at 600 ohms and
>terminate. Call the local co testline for 1000HZ and see what level you are
>getting. If you can't, the LEC will. Check the line off the system for the
>same issue. It will not be hard to pinpoint where it's coming from. If you
>are the owner of the system and not a tech, find a tech.   Brad
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
>Donald R. Resor
>Sent: Tuesday, May 16, 2006 1:56 AM
>To: KXT help List
>Subject: KX-T: Squeal on CO line TA824
>
>On three different occasions when pressing to access CO1 there is a
>high pitched squeal which sounds similar to feedback noise.  This has
>happened on all the proprietary phones connected to the system.  Upon
>hanging up and accessing the CO line the noise stops.  Has anyone
>else experienced this?  A friend whom installs Panasonic phone
>systems for a living said that he did have one system do this which
>is connected to a TVA50 voice mail system.
>
>Donald R. Resor
>Los Angeles, California
>
>
>
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