UC520 POTS Call Volume

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Dec 24th, 2007
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We have just installed a UC-520 at a client site. When a call comes in or goes out the volume that the person on the ouotside hears is perfect. However, the user on the IP phone has a hard time hearing the outside person. Looking for some possible solutions.


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Overall Rating: 5 (2 ratings)
paolo bevilacqua Mon, 12/24/2007 - 11:48
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Do you have analog (FXO) lines to PSTN?

If so, please follow document to adjust to optimal impedance:


After that,if still volume problem, adjust audio gain under voice-port.

Hope this helps, please rate post if it does!

Scott_Barns_2 Wed, 01/02/2008 - 20:02
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Thank you for your help... we adjusted the input gain at the port level. Interesting read about the impedance though!


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