The phone is actually less than a week old and it happens with all calls.  Notifications for messages and emails worked sporadically.  Worked with Motorola techs, they had me reset the network settings and do a factory reset but it still persisted.  Finally was able to make the vibrations work after turning off the notifications then turning back on but that only lasted for a few calls.  Assuming it was defective so exchanged for another and this new one works fine.  Thanks for your suggestions!