BusinessPhone Communication Platform 4.0
Facilities

## Hot Line

## Definition

### Immediate hot line

Immediate hot line means that an extension is programmed so that when the user lifts the handset or presses the On/Off-key a call will be initiated automatically to a predetermined party.

### Delayed hot line

Delayed hot line means that when someone lifts the handset or presses the On/Off-key there will be a programmable delay before the call is sent to the predetermined party. This gives the user an opportunity to dial any destination number.

## Use

Hot line can be used among other things for:

- Alarm telephones
- Lift telephones
- Taxi telephones
- Hotel foyers
- Entry phones
- Modems

Calls can be initiated both to internal and external parties.

For external parties the use of a common abbreviated number is mandatory.

## Operation

For all telephones.

#### Outgoing calls

An outgoing call is initiated either by lifting the handset or pressing the On/Off-key.

From a system telephone it is possible to call any extension by dialling the relevant extension number directly or by pressing an optional traffic function key.

#### Incoming calls

An incoming call to the extension is announced and answered as from a normal extension.

## Capacity

Each extension can be programmed for the hot line function.

The programmable number comprises a maximum of four digits.

## Limitations

In order to access an external number, the programmed number must be a common abbreviated number.

An analogue extension telephone programmed for immediate hot-line, cannot be used for other outgoing calls.

## Programming

0116 |  | Hot line destination

0144 |  | Hot line delay time

## Equipment

None

Revision: B © Ericsson Enterprise 2003