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#205941 01/18/12 02:34 AM
Joined: Feb 2008
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I have CIX 670 with 5.20 MT55 software, PDKU's ans DKT 2020-SD phones that has been in for a year. In the last two weeks the customer says that intermittently as soon as they access their PDN a LOUD high pitched sound comes from their speaker and it can't be stopped until the reset the phone (Unplug/Plug). I thought it could be the old hookswith replacement deal, but it is suddenly 6-8 different phones once or twice a week. The phones are on different PDKU's.Any ideas??

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#205942 01/18/12 06:13 AM
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That's an odd problem. Recycle the power on the 670 and see if the problem goes away.

#205943 01/19/12 03:17 AM
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Had this exact same problem on CIX running 5.20 MT059 i put it down to emc and PDKU's in a CIX


Cheers Chris
#205944 01/21/12 12:53 AM
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we have a problem like that on the old 280 used to only be on dass but has started on isdn30 only had it on these 2 types of lines (so far)but a reset has sorted it out

#205945 03/09/12 08:06 AM
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I have seen this a few times. It is a bad ground on the plug you are useing. Break off the ground 3rd plug on the cord and try again


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