3com SuperStack 3 NBX Manual De Usuario

The dial plan configuration file is a key component of inbound and 
outbound call processing. The dial plan tables in the configuration file 
process incoming calls in this order:

1 Incoming Dial Plan Table

2 Pretranslator Table

The dial plan tables process outgoing calls in this order:

1 Internal Dial Plan Table

2 Least Cost Routing Table

After pretranslation (if performed), the final translation process routes the 
call to the destination.

The system routes all inbound and outbound calls through the dial plan.

The system processes inbound calls using the Incoming table. The system 
can also use pretranslators to perform digit manipulations on incoming 
calls before it uses the Incoming table.

Each pretranslator operation performs a digit manipulation operation on 
the dialed digits. For incoming calls, if the DID/DDI range matches the 
internal extensions, the dial plan requires no pretranslator. However, you 
can use pretranslators to map nonmatching dialed numbers on an 
incoming DID/DDI channel to desired internal extensions. See the 
example in Customer Requirement 1 in 

 on 

The system processes outbound calls using the Internal dial plan table or 
the Least Cost Routing table.

You can add entries to the Internal dial plan table to match the system to 
your service. See Customer Requirement 2 in