Volume Control A1200p

Hello
There is a configuration openvox 1200p 4fxo (the power cable is connected)/8fxs a1200 + trixbox 2.8 all works well.
The problem in very low sound , then i call from analogue phone through any port fxs on PSTN a line, I very badly hear the interlocutor. Tried to change rx/tx gain in chan_dahdi, the result was very poor and i has noticed if up rxgain above 10, appear problems with DTMF tone in analogue phones, .

cat/etc/proc/interrupts
looked interruption does not divide.
dahdi_test
99,99 best average 99,88.
Sory for my bad english/

Hi PaPaYa:
I find that the result of dahdi_test average value is 99.88%, under normal circumstances should be higher than 99.98%. So please double check you interrupts.

Hello,
Is it possible to turn up your termination's voice? The value of parameter rxgain should not be too high..
If possible, please give your system's SSH account to me and let me have a check for you for further more!
In addition, the dahdi_test result seems no good! please contact me if you available!

Hello
sory i've gote a mistake
dahdi_test

---Result after 159 passes---
Best: 100.00 - - worst 99.978 - - averange: 99.992787, Difference 99.992787

What do you mean "termination's voice"
SSh account will be send

Hello,
”termination's voice“ means that adjust the voice via the physical phone volume control knob.
If you still can not solve it, please send your SSH to us.

No it isn't possible turn up my termination's voice on the phones.
Ok i've twice send you a mail with ssh.