BusinessPhone Communication Platform 5.1
Facilities

## Connection State Message

## Definition

A connection state message is the acoustic and/or optical signal supplied by the system when a directory number has been dialled.

## Use

The connection state message informs the user of the caller's state and (if any) the possibilities for ordering facilities.

## Operation

### Called party is free

Tone message: Ring control tone or, for an internal call to Line 2, special ring control tone.

Display message: The display shows for instance if the call is presented on Line 2 of the called party “FREE L2”:

The extension can:

- Wait for called party to answer
- Send a message to called party
- Order paging
- Terminate call

### Called extension is busy

Tone message: Busy tone.

Display message: “BUSY”

The extension can:

- Order callback
- Order intrusion
- Order camp-on
- Send message to called party
- Terminate call

### Called number is vacant (unassigned)

Tone message: Vacant tone

Display message: “UNKNOWN” or “NU” (Number unobtainable)

The extension can: Terminate the call

### Called number is blocked

Tone message: Congestion tone.

Display message: The display shows “BLOCKED” or “NB” (Number blocked), that is the number is currently inaccessible or restricted.

The extension can: Terminate call

## Programming

None

## Equipment

None

Revision: B © Ericsson Enterprise 2003