Ringback to Operator

We have our calls set up to go through the call queue and after someone answers the call, we obtain the customer details to forward the call. We then will put the call on hold and either contact the employee on their desk phone or page for the call to be picked up. There are times when the call does not get picked up, so we would like the call on hold to ring back after 2 minutes or so either to the person that put them on hold or to the call queue.