Avaya BCM 4.0 Networking Konfigurationsanleitung PDF herunterladen (Seite 289)

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Chapter 25 Dialing plan: Routing configurations 289

BCM 4.0 Networking Configuration Guide

To set up the multiple routing overflow feature

1 You assign the preferred routes in a destination code schedule. Refer to “Alternate routes for

routing schedules” on page 300.

a Pick a schedule when you want these routes to be in effect.

b In the First Route field enter the route number for the preferred route for the call.

c Choose the absorb length for the first route that is appropriate for the dialout numbers you

entered for the route.

d Repeat steps b and c for Second Route and Third Route fields.

e Define the start/stop time as 0100 under the equivalent Routing Services schedule. This

setting means that the schedule is active 24 hours a day. Refer to “Configuring schedule

names and timers” in the BCM 4.0 Device Configuration Guide (N0060600).

2 Assign an overflow route, usually the most expensive route, to the same Destination Code, but

for the Normal schedule. Refer to “Destination codes” on page 298.

3 On the Scheduled Services table, choose auto for Service Setting, and enable Overflow. Refer

to “Configuring scheduled service” in the BCM 4.0 Device Configuration Guide (N0060600).

4 Use a control telephone to activate or override the feature on the telephones on which you want

preferred routing to be active.

When a user dials, and the telephone cannot access the preferred line (First Route), the system tries

each successive defined route (Second Route, then Third Route). If none of these routes have

available lines, the call reverts to the Normal mode. When the call switches from the preferred

routing mode (First Route, Second Route, Third Route) to Normal mode, the telephone display

flashes an “expensive route” warning.

VoIP trunking uses a similar process for setting up fallback from the VoIP trunk to a PSTN line.

This section deals with applying the programming in network situations.

• “Dialing plan using public lines” on page 290

• “Destination code numbering in a network” on page 285

Note: You must also ensure that the route correctly absorbs or passes dialed digits so that

the number dialed for each line is the same from the user perspective.

Note: Overflow routing directs calls using alternate line pools. A call can be affected by

different line filters when it is handled by overflow routing.

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