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7937-G 1-3 Seconds Cut Out Problem

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CaseFile

Technical User
Oct 6, 2011
121
US
I have been getting reports of our 7937-Gs cutting out part of the conversation for 1-3 seconds. The call just goes silent at times. This has happened on different 7937s, in different subnets, at different times. And it isn't like voice clipping, where a volume adjustment makes a difference. I have about (300) 8941s on the same subnets, and even tried in the same ports. I have no problem with the 8941s. Is there something about the 7937s I haven't found online ? I am on ucm 8.5.1. Any suggestions ?
 
I somewhat have the same issue. We have a 7937G that will "clip" the call intermittently. The voice network is fine and replacing the unit with a 7936 resolved the issue. I thought it might have been a hardware/firmware issue (maybe something like echo cancellation), however I wonder if anyone else has been experiencing this.
 
For me the resolve was to remove switchport trunking and make it switchport access
 
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