BusinessPhone Communication Platform 4.0
Facilities

## DDI Number Translation

## Definition / Use

This feature supports an individual number translation of the external network DDI numbers to corresponding internal directory numbers and vice versa.

The reason for a number translation is relevant in cases, when the DDI number range provided by the public network does not fit, or is not available for use as internal number range within the system.

Further for a scenario where the PBX may be connected to two different network operators with different numbering plans there will be a possibility for usage of two different number translation tables.

## Operation

The number translation is provided in following way:

A programmable cross reference table (including two different number translation tables) allows up to 400 internal directory numbers to be translated to corresponding external DDI numbers.

The number translation can be made both for incoming and outgoing call direction per dedicated trunk:

- an external DDI number is translated to the corresponding internal 1-4 digit directory number.
- an internal directory number is translated to the corresponding external (DDI) number when creating and providing the calling/connected line identification.

## Capacity / Limitations

The feature is independent of used line or register signalling, i.e. available for all types of automatic incoming DDI calls.

It offers two different number translation tables and allows up to 400 internal directory numbers (max. 200 intervals) to be translated to corresponding external DDI numbers per number plan.

## Programming

These commands are only accessable via BMS/RASC:

2260 |  | DDI/CN* number translation

1804 |  | DDI number translation

## Equipment

### FECU

To use the feature, a FECU has to be connected to the CPU-D4.

Revision: B © Ericsson Enterprise 2003