Motorola Mobility H700 Wireless Headset "unmute blackberry" Questions

Unmute instruction. No idea if that's exactly your problem... I always assumed that when you mute they can't hear you, and you can't hear them, but maybe that's just a strange "mute" function that you

Blackberry pearl that I bought in february of 2007. This is the third h700 Motorola has sent me. they work for about 3 months then I can't be heard by the person on the other end of my calls. Is there