For example, trunk groups 1, 2, and 3 are set up as follows:

• Trunk group 1 has two trunk members active with Flash and Flash Override precedence calls.

• Trunk group 2 has two trunk members active with Immediate and Priority precedence calls.

• Trunk group 3 has two trunk members, both of which are idle.

A user makes a new call with the Flash precedence level. The system processes the call as follows:

1. The system checks trunk group 1, and does not find an idle trunk. The system then checks trunk group 1, and does not find a preemptable active call.

2. The system checks trunk group 2, and does not find an idle trunk. The system then checks trunk group 2, and finds two preemptable active calls. The system preempts the first trunk member that the system finds with a lower precedence level. In this example, the new Flash call preempts the active Immediate precedence call.

3. The system never checks trunk group 3, even though trunk group 3 has idle trunks.

With route preemption:

1. The system checks each trunk group in the route pattern to determine if any trunks are idle. If the system finds an idle trunk, the call is connected.

2. If the system does not find an idle trunk, the system checks each trunk group in the route pattern to determine if any trunks are preemptable. If the system finds a preemptable trunk, the system preempts the current call and connects the new call.

3. If the system does not find an idle trunk or a preemptable trunk within the Precedence Call Timeout interval, the caller hears either the Blocked Precedence recorded announcement or reorder tone. For more information, see Announcements for Precedence Calling. Calls with Routine precedence cannot preempt any other calls. If a call with Routine precedence does not find an idle trunk, the caller receives busy tone.

For example, trunk groups 1, 2, and 3 are set up as follows:

• Trunk group 1 has two trunk members active with Flash and Flash Override precedence calls.

• Trunk group 2 has two trunk members active with Immediate and Priority precedence calls.

• Trunk group 3 has two trunk members, both of which are idle.

A user makes a new call with the Flash precedence level. The system processes the call as follows:

1. The system checks trunk group 1, and does not find an idle trunk.

2. The system checks trunk group 2, and does not find an idle trunk.

3. The system checks trunk group 1, and finds an idle trunk. The system completes the new Flash call using the first idle trunk.

4. Select Enter to save your changes.