Avaya BCM 4.0 Networking Przewodnik Konfiguracji Pobierz pdf (Strona 432)

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432 Chapter 48 Setting up VoIP trunks for fallback

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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.

Absorbed length, Normal schedule: If this is a private network PSTN line, and the network uses a

CDP dialing plan, and the remote system identifier is 2, which is part of the remote system DN

structure, and you specified destination digit of 2 for the remote gateway, then configured 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 private access code/destination digits for the remote

system (UDP dialing plan) or this is a public PSTN, enter private access code or the public access

number to the remote system into the External # field on the route record. In this case, 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.

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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