1602-05: CO Busy Out Timer
Use this option to set the guard time for lines. When the system disconnects a line (e.g., after a user
hang up), the system keeps the line idle until this timer expires. The CO Busy Out timer helps prevent call
collisions. If you set this interval too short, call collisions may occur. If too long, there will be
unnecessary delays before you can use the line for a new call.