This is a fairly hard problem. For example, it is very difficult to write a query that finds all UA devices that have more than one call at a time. Or a query that determines the maximum number of calls that were concurrently active during any given month for all accounts. This leaves table scanning. I can write a query that finds : 1) The start time for all calls for a specific account 2) The end time for all calls for a specific account. Union both result sets together, order by the time field. Then increment a counter each time you see a start, decrement the same counter when you see an end. Whenever you get a new 'start' time check the concurrency counter against a max concurrency counter. This is a fairly expensive operation. I don't think it can be done by query alone. It would take a query and some scripting. Another way would be to keep track of 'max concurrent calls' via a database trigger. That is, I can create a trigger that accomplishes the logic above every time an acc record is inserted (and a new start time is recorded) and every time it is updated (end time is recorded). You could also do the same from a script inside the ser.cfg processing. -g On Oct 26, 2004, at 4:48 PM, Jan Janak wrote: Greg Fausak www.AddaBrand.com (US) 469-546-1265