BusinessPhone Communication Platform 4.0
Facilities

## Doorphone

## Definition

A doorphone is a unit that is located at the entrance, and which is used to call one or more ASB 150 02 extensions.

## Use

The doorphone is used to monitor the admission to a company.

The doorphone function provides also the feature to open the door lock from an extension.

Calls from the door speaker can be directed to:

- an individual extension (if programmed as hot-line position of the door-speaker)
- a group of extensions (if programmed as extensions having the possibility to answer the doorphone calls)

## Operation

Operation depends on the type of the doorphone you are using. The description below refers to the ERICSSON Door Interface Unit.

### Call from door speaker

Depending on the type of the connected door-speaker, a call is initiated by pressing the doorphone button.

The extension(s) programmed as having the right to answer the door speaker calls, receive(s) a call signal.

### Answering door-speaker calls

The call can be answered from an extension by lifting the handset and speech connection will be established.

### Opening/closure of the entrance lock

The door-opener is activated by making an inquiry to its directory number. This extension number can also be programmed on a programmable key.

After making the inquiry the extension that answered the door-speaker call and made the inquiry to the door-opener will be automatically disconnected from door-opener and door-speaker.

At the OPERATOR console the directory number of the door-opener can be entered on a name selection key. The OPERATOR console can activate the door-opener by transferring the incoming doorphone call to the directory number of the door-opener and the OPERATOR itself will be free again.

The door-opener will be deactivated after the timeout interval (possible intervals are 1; 4; 6 or 8 seconds, adjustable in Door Interface Unit).

### Deactivation of the doorphone

Deactivation of the doorphone occurs:

- when the extension which answered the call goes on hook
- after an activation of the door-opener
- after time-out (for security reasons, about 1; 2; or 3 minutes)

## Capacity

The number of doorphones is limited only by the number of available analogue extension positions.

## Limitations

The connection of an ERICSSON’s Door Interface Unit to the ELU-A occupies 2 analog extension positions.

## Programming

0116 |  | Hot line destination

0161 |  | Music channel in hold state

0144 |  | Hot line delay time

See Hot line (240/155 34-ASB 150 02 Uen).

0122 |  | Long ring bursts?

0143 |  | Line break for ELU-A

### Using other Doorphones, different from the Ericsson doorinterface unit

0121 |  | DTMF to instrument ?

## Equipment

A big varity of doorphones that fulfil a list of requests see Technical Data (1555-ASB 150 02 Uen System Overwiev) can be connected to ASB 150 02.

The ERICSSON’s Door Interface Unit must be connected to an ELU-A and occupies two analogue positions. In addition you need a doorphone (as specified in Installation Instructions).

Any other suitable doorphone version can be used, but verify that the command 0121 has been settled properly.

Revision: C © Ericsson Enterprise 2003