Voice Volume low ...

Unanswered Question
Jan 14th, 2010
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I wonder if any one has experience on tuning input gaina dn out put attenuation on the gate way ...

We have a customer is experiencing the voice volume low issue.  They have a 2801 vocie gateway run MGCP to cucm and using FXO/FXS for outgoing and incoming calls.     They are complaining that problem is on external calls.

I have been trying to increase input gain to 6, and out attenutation to to -2 on the incoming trunk...   They feel improvement, but not enough.   Then I was trying to increase input gain more, but no more change happens.  

I'm wondering if there are some rules on coordinate the input gain and output attenuation ?   How to make it to have the best tuning result ?   Any documentation specifies on this topic will also appreciated ....

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