BusinessPhone Communication Platform 4.0
Facilities

## Alarm via Alarm button

## Definition

The alarm function includes the possibility to send an alarm initiated by a telephone or an external alarm device to a programmed alarm centre.

The alarm may be initiated by an external alarm device connected to an extension.

When activated, the alarm is sent to all extensions having a programmed alarm key.

An alarm can only be reset from the place where it originates. The alarm centre cannot reset the alarm device.

There is a distinction between an unacknowledged and an acknowledged alarm.

#### Unacknowledged alarm

This alarm has not been read and acknowledged by the alarm centre.

#### Acknowledged alarm

This alarm has been read and acknowledged by the alarm centre but the alarm device has not yet been reset.

## Use

The alarm function can be used for different types of alarms, for instance as a security alarm in hotel guest rooms or in banks for the cashier.

## Operation

An Alarm Interface Unit (AIU) is necessary as interface with an external alarm button. The AIU is a special option unit that has to be mounted beneath the digital telephone. If the switch is open or the telephone is disconnected an alarm will be initiated in the main alarm center or/and in one of the to 8 different alarm center groups.

#### Alarm indication

An alarm is indicated by a fast flashing lamp of a programmable key on the telephone at the alarm centre. The telephone rings in accordance with the programmed ring type.

#### Read out of the alarm

The receiver at the alarm centre presses the key next to the alarm lamp. The ringing is discontinued.

If there are no more alarms, the lamp will change to steady light. If there exists at least one more alarm, the fast flashing will continue.

The user can press the alarm key again and the next alarm will be presented.

If no more unacknowledged alarms exist it is possible to step through the acknowledged alarms that have not yet been reset.

If a new alarm arrives, while another alarm is being read, only a muted ring signal will be heard.

#### No unacknowledged alarms exist

If there are no unacknowledged alarms when the key is depressed, the display will show the time when the alarm was read.

#### No alarms exist

If the key is depressed when there are no alarms and the lamp is extinguished, the display will show

#### The alarm is restored

If the alarm device is restored during the time the alarm centre is reading the alarm, the display will change to

To use the alarm functionality on the DBC 21x telephones, an Alarm Interface Unit (AIU) is necessary as interface with an external alarm button. The system instrument interface ELU-D/MFU is able to handle calls and alarm button signals simultaneous.

Note

Disconnecting a telephone, an Alarm is initiated !

2 different solutions are available:

##### Solution 1

If the Alarm button IS NOT located next to the telephone (e.g. in the bathroom), the 2 unused lines of the 4 wire terminal line cord are used for the loop to the Alarm button.

##### Solution 2

If the Alarm button IS located next to the telephone (e.g. in hospitals next to the bed), it is possible to connect the Alarm button with a separate cabling directly to the telephone.

#### Reset of the actual alarm

The reset of the active alarm is only possible by dialling *54# on the telephone, from which the alarm has been activated.

When the alarm has been deactivated by the procedure, the indication in the alarm centre is automatically removed.

A special alarm button shall be used, which remains open when one time pressed. It is also necessary that this button is restored otherwise the alarm automatically pops up again after 10 seconds.

## Capacity

Any digital extension can be used as an alarm device and any digital extension having a display telephone can be used as an alarm centre.

The alarm functionality is applicable in hotel environments in conjunction with digital guest room telephones as well as in the normal business application.

It is possible to define up to 8 different Alarm groups with different alarm centres.

In case of system restart the active alarms are NOT lost. After restart all alarms that have not been cleared up to that moment will be indicated again. Alarms appearing during restart cannot be handled.

## Limitations

It is not possible to use the alarm function on following telephones: DBC 22x, Analog telephones, DBC 199 and DBC 6xx.

The number of active alarms is limited to 20 per group. All further alarms causes appropriate warning messages.

## Programming

0101 |  | Facility COS

3073 |  | Alarm extension

3074 |  | Read alarm

5633 |  | Create Alarm Group

0174 |  | Alarm group

### Programmable key

0301 |  | Function of programmable key

Enter selected function = 13

0302 |  | Associated number

Enter the group number defined in command 5633 or function code *79# to supervise ALL different alarm groups.

0303 |  | Ringing on incoming call

## Equipment

A digital telephone DBC 21x is necessary.

To use the alarm functionality via the system telephones DBC 21x the optional Alarm Interface Unit (AIU) is necessary as interface with an external alarm button. The external alarm button has to be closed in idle state.

### Alarm center

The alarm centre must be equipped with a display telephone. To read out the alarm a Standard, Executive telephone or an Operator’s console is required.

Revision: F © Ericsson Enterprise 2003