Crazy annoying problem

[Guest htcrules]

i have spv e200 with newest ROM 2.7.5.1 (orange)

and one problem...

when i call some number and somebody calls me during the conversation

speaker volume (buzzer) automaticaly decrese 1 level but graphic shows max level.

i solve that problem with pressing button for volume up.

it is ok next 4-5 minutes and during that time level is maximum

after that period level is again lower and

i must repeat pressing the button (in every call)...

Please help me.

i want maximum Earpeace Volume (!) all the time!

Thx anyway

[Guest Toyota-F1.com]

You could try, not sure if it's right,

Start>Settings>Accessibility>In-call alert volume.