Motorola instruction manuals

Your code (PL code, interference eliminator, quiet call) is not programmed the same on both radios. The Cobra appears to be set to open squelch (no code). Set your Motorola code setting to zero (off). This should solve the problem.

When this is required between 2 Internal Users and 1 External User, follow the Instructions for a 3 way Conference Call.
See Section 3.5.4 on Page 16 of the User Manual.
Good Luck!

Do you have it going to 'mute' or to the dial page on accident?

Your headset may also be called a HS850 (may look different) but the instructions would be the same. Instruction manual is here:
http://www.motorola.com/mdirect/manuals/HS850_%209489A97O.pdf

This could be due to a phone setting.
You probably have the phone or the blue tooth in the "mute mode"
check you instruction manual or the phone settings to see if you have it voice muted for privacy.

the phone needs the microphone replaced

check your phones for compatibility

Want to know the price of v8 motorolla

speakers have gone best getting a new phone it would cost more to replace speakers

Check to ensure that is it not muted by tapping both volume buttons at the same time, do when on a call. Refrence the manual at the below linkhttp://telecom.hellodirect.com/eBiz/pdf/cellphoneheadsets/Motorola_H800_Manual.pdf Good Luck L8R