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Posted By: Tomscom Tunnel sound on lines - 10/13/11 09:50 PM
I have a ESI switch that keeps having the same problem over and over. I have changed out the line cards twice and even changed out the entire system with a new unit and the problem returns after about 3 to 6 months. I added loop current regulators, new surge protection and grounded the cabinet and none of that made any difference. Any ideas on what the cause could be and what to try?

Thanks
Posted By: metelcom Re: Tunnel sound on lines - 10/14/11 08:39 AM
It could be a carrier problem using a softswitch.
Posted By: Tomscom Re: Tunnel sound on lines - 10/17/11 07:31 PM
Thanks for the info.
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