EWT for a call is the remaining time that a caller can expect to wait before the call is serviced from the queue. If the call is queued to multiple splits, the remaining queue time for each split is calculated, and the shortest calculation is used as the EWT.

A call must be queued to a minimum of one split to have an expected wait time. If the call is not queued, or if the call is queued to splits that are not staffed, the EWT value is infinite.

The following vector example shows how to use EWT to determine call treatment:

1. queue-to split 1 pri m
2. check split 2 pri m if expected-wait < 30
3. goto step 5 if expected-wait for call < 9999
4. busy
5. announcement 3001
6. wait-time 998 secs hearing music