BusinessPhone Communication Platform 7.0
Facilities

## Supervision

## Definition

By programming an extension's directory number on a key, it is possible to activate the traffic function SUPERVISION and to undertake the following functions:

- Call the extension
- See the extension's telephone situation
- Answer calls to the extension

## Use

By programming an extension’s directory number on a key, the supervision feature allows the following options:

- As answer key for common call pick-up function
- Within a work group, in order to answer calls to other extensions in the group
- In secretary functions for mutual monitoring (supervision) of various directory numbers of executives and secretaries

## Operation

### System and IP Telephones

For the following description note that the system telephones have Line 1, Line 2 and an Inquiry key whereas the IP phones have a Line key only.

#### Lamp characters

Extinguished | Monitored party is free on both Line 1 and Line 2
Rapid flash | Call is presented to Line 1 or Line 2 for monitored party
Steady glow | Monitored extension is busy on Line 1 or Line 2

#### Own call to monitored party

1. Press supervision key.

- One of traffic functions Line 1, Line 2 or Inquiry is seized and its lamp flashes to confirm connection.
- Ring control tone is heard.

A system telephone with display shows, e.g.:

An IP telephone will show e.g.:

If the supervision key is pressed for an extension that is busy on both lines, busy tone will be heard.

#### Pick up of calls

Lamp for monitored party flashes rapidly.

1. Press supervision key.

- Picked up call is presented on one of free traffic functions Line 1, Line 2 or Inquiry.
- Lamp for selected key flashes as, confirmation of connection.
- Supervision key's lamp extinguishes unless monitored extension has several unanswered calls.

The top row of the system telephone shows from whom the telephone was picked up.

The second row of the system telephone shows the conversation partner.

The IP telephone shows the conversation partner only.

## Capacity

The number of individual supervision functions is limited only by the number of available programmable keys with lamps.

DBC 220 |  | = 4 |  |  |
DBC 222 |  | = 4 |  |  |
DBC 223 |  | = 4 |  |  |
DBC 224 |  | = 3 |  |  |
KEY PANEL |  | = 17 |  |  |
DBC 422 |  | = 6 |  |  |
DBC 425 |  | = 18 |  |  |
Old telephones:
DBC 210 |  | = 3 |  |  |
DBC 199 |  | = 0 |  |  |
DBC 211 |  | = 4 |  |  |
DBC 601 |  | = 0 |  |  |
DBC 212 |  | = 4 |  |  |
DBC 631 |  | = 10 |  |  |
DBC 213 |  | = 14 |  |  |
DBC 662 |  | = 30 |  |  |
DBC 214 |  | = 3 |  |  |
DBC 663 |  | = 20 |  |  |
KEY PANEL |  | = 17 |  |  |

## Limitations

Extensions equipped with Analog telephones and a DBC 199 cannot use this facility.

For both call and answer, at least one of the traffic functions Line 1, Line 2* or Inquiry must be free.

Calls that are signalled on the supervision key include all calls to the monitored extension's directory number, that is on both Line 1 and Line 2*.

A monitored extension is indicated as busy if either Line 1, Line 2* or Inquiry is seized. This does not prevent calls from being initiated to the monitored extension's Line 2*, if this is free.

The Supervision function on the DBC 220 and DBC 210 is only available using an ELU-D3/MFU board or higher.

The supervision of a PBX group with serial distribution will not be supported, however it will be supported with parallel distribution.

(* not available on DBC 210 Telephone).

The ringing alternatives of a supervision key on an IP telephone is limited to “not ringing”, “ringing” and “one muted ring burst”.

## Programming

0301 |  | Key function

The selected key on the system or IP telephones must be programmed for supervision.

Enter function = 13

0302 |  | Number/ID

0303 |  | Ringing alternative

### Individual programming

Extensions equipped with System Telephones can program supervision themselves.

See also document Facility Description- General (155 34-ASB 150 02 Uen).

## Equipment

System telephones or IP telephone DBC 425 or DBC 422. For the function supervision on IP telephones the minimum central software is release 15.

Revision: G © Ericsson Enterprise 2005