1602-05: CO Busy Out Timer [System: Timers: Features: Outgoing (1602): Line Busy Out]

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.