Elastix 2.4 Caller ID keeps giving "Device"

Elastix 2.4 Digium TDM400 card with 1 FXO and 1 FXS. The phone plugged into the FXS port after every call and sometimes just randomly the caller ID pops up like a normal phone call would but the phone doesn’t ring and the caller ID displays “Device” 5004 witch is the phones extension. Anyone have this issue.

Sounds like an Elastix problem, not an Asterisk one.