AT&T MERLIN LEGEND Release 2.0 System Programming Manual page 429

Programming Procedures
Procedure: Elevate Priority
Display/Instructions
Step
Select the Operator menu.
Select Queued Call.
Select Elevate Priority.
xx = current number of seconds
Erase current priority.
3-338 Elevate Priority
On the console
Select Operator.
Select Queued Call.
Select ElvatePrior.
Press Drop.
On the PC
[F3]
Press
[F2]
Press
[F4]
Press
[Alt] [P]
Press +