Avaya BCM50 Konfigurationsanleitung PDF herunterladen (Seite 394)

394 Chapter 46 Setting up VoIP trunks for fallback

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Example:

Destination code digit: If it is available, you might want to use the same number that you used for

the destination code of the gateway.

If you have multiple gateways, you could use a unique first number followed by the destination

digits, to provide some consistency, such as 82, 83, 84, 85 to reach gateways with destinations

digits of 2, 3, 4 and 5.

The number you choose will also depend on the type of dialing plan the network is using.

Networks with CDP dialing plans have unique system codes. However, with networks using UDP,

this is not always the case, therefore, you need to be careful with the routing to ensure that the

codes you choose are unique to the route. This will also affect the number of digits that have to be

added or absorbed. It is helpful to use the Programming Records to plan network routing so you

can determine if there will be any conflicts with the destination codes you want to use.

Configuring the schedules for the destination codes

Under the destination code heading you created in the previous section, click the Schedules key,

then choose the appropriate schedules:

To configure the VoIP schedule for all fallback destination codes

1 Change First Route to the route you configured for your VoIP line.

2 Set the Absorbed length to absorb the amount of the destination code that is not part of the

dialout for the trunk.

Normal schedule for all fallback destination codes:

1 Change Use Route to the route you configured for your PSTN fallback line (the line to the

other system).

2 Set the Absorbed length to absorb the amount of the destination code that is not part of the

DN for the other system.

Examples:

Absorbed length, VoIP schedule: If the remote gateway destination digit is 2, which is part of the

remote system DN structure (CDP network), and you specified a destination code of 82, set this

field to 1, so that the 2 is still part of the dialout.

If the destination code is different from the remote gateway destination digits, and you entered an

External # into the route record (the destination digit for the remote system), set the absorbed

length to the number of digits in the destination code. The system will dial out the External # you

entered in front of the rest of the number that the user dialed. This would occur if the network is set

up with a UDP dialing plan.

Note: Do not add alternative routes (second or third). Since fallback is active, the

system immediately falls back to the Normal schedule if the first route is not

available.

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Avaya BCM50 Konfigurationsanleitung Seite 394