BusinessPhone Communication Platform 5.1
Facilities

## Common Bell

## Definition

Common bell facility gives to all extensions the possibility to pick up the call from an extension that has been predefined as a common bell extension.

If the common bell feature is used in large working areas, it may be a good thing to use a mounted bell in connection with the common bell extension in order to attract everybody’s attention.

## Use

Common bell is similar to the function of the call pick up group, however the difference is that all extensions can pick up the common bell call.

The common bell extension used in small working areas can be that of the operator.

In the systems that already have an operator, the common bell extension can be the answer position of the off-duty operator.

Common bell extension can be programmed as a night answering position too.

## Operation

### All telephones

If a call is waiting at the common bell extension, all extensions of the system (operator included) can pick up this call by dialling a programmable common bell pick up code:

1. Lift the handset (ANALOGUE or BASIC telephones).
2. Dial the relevant common bell pick up code (default value *73#).

The connection between the extensions will be established immediately and at the same time the common bell extension will be ready to treat the next call.

If two or more extensions try at the same time to pick up a call from the common bell extension, just the first one will pick it up. The other extensions will receive the “number unobtainable” tone. In addition to this tone, the extensions with display will show “NO CALL WAITING AT COMMON BELL”.

The same situation will be faced if you dial the common bell pick up code and no calls are present at the common bell extension.

## Capacity

One extension of the system can be defined as a common bell extension.

## Limitations

An operator must not be defined as a common bell extension.

The code of the common bell, naturally must be different from those of the pick up groups.

The extensions that have no access to the common bell extension (prohibited by traffic group), can not pick up the common bell calls.

## Programming

Following commands are only accessable via BMS:

5629 |  | Pickup code for common bell

6901 |  | Common bell extension

Trunk answering position:

1101 |  | Answering position at day

1102 |  | Answering position at night

1103 |  | Reroute position at day

1104 |  | Reroute position at night

Following command is accessable via the telephone and BMS:

4001 |  | Alternative answer position

## Equipment

No need for additional equipment.

Revision: C © Ericsson Enterprise 2003