[Win 7] [Solved] VOIP problem

[NewBorn]

Hy People.
Im NewBorn, from Portugal. I started playing PR:Bf2 a week ago. Ive been experiencing a problem with the VOIP. Everytime i enter a new server, i join a Squad. For 5-10 minutes, i cannot hear or transmit thru voip, to my squad. ANd apparently, i cannot even use squad chat, for that time. After the 5-10 ends, i start hearing the team, and everything begins to work normal, bth VOIP and Squad CHat.

What do you think my problem is? Can i solve this? How?

Thanks in advance.