BusinessPhone Communication Platform 4.0
Facilities

## Outgoing External Calls

## Definition

Call from extension or other trunk to the public exchange or another PBX.

## Use

Allows extension users to initiate external calls to the public telephone network.

An outgoing external call can be initiated via one of the following facilities/functions:

- Selection of route number
- Selection of individual trunk number
- Selection of individual external line key
- Abbreviated number dialling
- Saved external number redial
- Last external number redial
- Name selection key with stored abbreviated number

## Operation

Outgoing external traffic can be initiated in one of the following ways:

### Route selection

1. Dial route number.

The system itself selects a free external trunk within the route.

The extension can then dial the relevant external number.

See also Route Selection (444/155 34-ASB 150 02 Uen).

### Directory number of trunk

1. Dial directory number of relevant trunk.
2. Dial relevant external number.

### External line key

1. Press relevant external line key on system telephone.

- State of trunk is shown on associated lamp.

1. Then dial relevant external number.

See also External Line Key (180/155 34-ASB 150 02 Uen).

### Abbreviated number dialling

1. Dial abbreviated number.

- System selects free trunk and transmits stored digits.

See also Abbreviated Number Dialling (101/155 34-ASB 150 02 Uen).

### Saved external number redial

1. Press Save/Redial key.

- If saved number exists, a trunk will be selected automatically and saved (stored) number will be transmitted.

See also Saved External Number Redial (460/155 34-ASB 150 02) Uen.

### Last external number redial

Each dialled external number will automatically be stored, independent of how it was dialled manually, using abbreviated numbers or a name selection key. The new directory number replaces the previous one.

1. Dial * * * to redial the last external dialled number.

See also Last External Number Redial (320/155 34-ASB 150 02 Uen).

### Name selection with stored abbreviated number

A common abbreviated number can be stored on a name selection key.

1. Press name selection key.

- System selects free trunk and transmits stored number via this trunk.

See also Name Selection (360/155 34-ASB 150 02 Uen).

### Indication on display

#### Analogue + digital CAS lines

On a telephone with display, the dialled digits are shown. The display will show the dialled number until the trunk is parked for the first time. When the parked trunk is reaccessed the display shows trunk number, e.g.: “EXTERNAL 701 SPEECH”

#### ISDN trunkline

The display shows the dialled external number and also the call status message in the same way as it is used for internal calls.

Following call states messages will be indicated:

- Free
- Busy
- Speech
- Unknown
- Incomplete
- Congestion

The dialled number will always be shown on the display also after a reaccess when the call has been parked.

If the outgoing call is answered by another number than the dialled one, the national significant number (public destination code + public subscriber number) of the actual connected party is presented on the display, further information see ISDN - Supplementary Service COLP (268/155 34-ASB 150 02 Uen)

### Call metering

When the system receives charging information at outgoing calls from the public network, the STANDARD and EXECUTIVE Telephone can activate the cost indication and the elapsed charging data will be presented on the display, e.g.: “16.80 EUR”

For further information about Call metering, refer Call Metering (141/155 34-ASB 150 02 Uen).

## Capacity

By parking a call, an extension user can initiate one or more outgoing external calls.

## Limitations

Access by extensions to this facility is controlled by the TCD (Trunk Call Discrimination) facility and traffic group matrix.

## Programming

None

## Equipment

None

Revision: D © Ericsson Enterprise 2003