I have a system running and a backup system. We added a function to capture and log caller id. It was added and tested on the backup system, then added to the live system. All of a sudden it won't capture the call id on the backup system. I've looked in the log file and the $RV_CIDNUMBER| doesn't show a number. I've attached the same phone line to a phone that shows caller id and it is sending. Any advice on how to troubleshoot this?
