need to find out inbound and outbound call records, from a particular device based on device description
sql car select call_type,callingpartynumber, originalcalledpartynumber, datetimestamporigination from
car:tbl_billing_data where
* Calling device description contains "vacant". Cant find how to join the two tables from the device and cdr together. only device name columns exist, origdevicename and destDeviceName
