Head unit - Alpine IVA-W200
Bluetooth - Alpine KCA-100BT
Phone - LG 8100 (Telus)

Everything works for talkin thru the stereo, only problem is on the other person's phone, they always get a fairly loud buzzing sound. Now i haven't had the chance to get another cell phone to test so i can hear this buzzing noise, but it doesn't sound on my side, and i have no idea whats causing it.

Obviously cell phone by itself sounds fine, no buzzin. The adapter was installed as per how alpine said thru the ainet cable. Microphone up near the roof/passenger window (tested this when stopped, so not air makin the noise).

Any ideas what the issue might be???