Motorola V710

I was using the phone in an analog zone, hearing clearly, no problems at all... I finished my conversation and hung up with the person. When I received another call, my ringer did not work... I only saw that a call was coming in... I have my ringer set to LOUD and set to the default ringer style and this still occurred... any suggestions of recommendations??
Also, my video does not store on the phone at all... just on the transflash card... anyone else having this problem or know a fix before I return the phone for a new one?
Thanks,
Mike D