Motorola V710

After following directions in manuel for pairing the V710 to Acura TL the following problem still exists....Calling out from the car is no problem........however only a Motorola cell phone call to the car will connect. Other cell phone makers who call while I am in the car does not show an incomming call. The phone shows that a call has been received but no indication on the car dash on an incomming call. Even my home phone cannot connect...only my son's motorola cell will sucessfully display an incomming phone call..........any one else have a similar problem????