BusinessPhone Communication Platform 5.1
Facilities

## Individual External Diversion

## Definition

The Individual External Diversion (IED) facility allows the user to activate a call diversion to a free defined and up to 24 digits long external number.

## Use

The IED is a tailor made function for companies which are using solutions such as “Teleworkers” or “Mobil Office” where there is no specific need for employees to be physically in the office in order to be reachable during office hours.

If the diversion number of an extension shall be an external number, IED can be programmed either from the extension itself, the operator, BMS or from the user by using DISA. The operator has also the possibility to execute IED on behalf of other extensions.

In case of an external diverted call, the costs of the outgoing call will automatically be assigned to the diverting extension (call metering counter, CIL record)

## Operation

### Activation

After *22 has been entered, the FECU level, the COS value, the IED permission for internal/external calls and the terminal type of the extension are checked.

#### Activation from the extension

The IED can be activated by the extension user with any of the following two strings:

*22* <external telephone number> #

*22# <external telephone number> #

On digital terminals with display it is possible to use the minus key (DBC 2xx) or shift key (DBC 6xx, DBC 7xx) as a backspace. If the width of the display is not enough to accommodate the whole activation sequence, the characters scroll out on the left side. They scroll in from the left side, when the user clears the last characters with the minus or shift key to make corrections.

After the *22 string only the STAR or the HASH keys are accepted.

After activation of an IED the display will show following:

“5452->External” or “5452->Ext.” for small displays.

Note

For network providers which are supporting the “wait for 2nd dial tone” function, it is possible to insert a “*” within the external telephone number as “wait for 2nd dial tone” marker.

#### Activation from the operator

The IED of an extension can be activated also by the operator independently from the blocked status of the extension with any of the following two strings:

*22* <diverted extension> * <external telephone number> #

*22#<diverted extension>*<external telephone number>#.

In case of mistyping it is possible to use the minus key (DBC 214) or shift key (DBC 663, DBC 754) as a backspace. If the width of the display is not enough to accommodate the whole activation sequence, the characters scroll out on the separator line in the middle of the screen. They scroll in from the left side, when the user clears the last characters with the minus or shift key to make corrections.

##### Activation with DISA

The IED can be activated also remotely by the extension user with DISA ( see also document DISA with password control, 164/15534-ASB 150 02 Uen). First the user has to call the public DISA number, than, receiving the internal dial tone after a successful DISA identification one of the following strings have to be entered:

*22* <external telephone number> #

*22# <external telephone number> #

When using the IED facility with DISA the individual external diversion is always set for the extension which have been entered during DISA identification.

### Deactivation

#### Deactivation from the extension

The IED can be deactivated by entering following digits:

#22#

After deactivation, the diversion number is not cleared, so it can later be reactivated at a later time.

From digital extensions, where a dedicated key, a diversion key, is available for activation and deactivation of diversions, the active IED can be deactivated simply by pressing the diversion key. The IED cannot be reactivated simply by pressing this dedicated function key, to reactivate the IED the reactivation sequence has to be executed.

#### Deactivation from the operator

The IED of an extension can be deactivated also by the operator independently from the blocked status of the extension by dialling:

#22* <diverted extension> #

After deactivation the diversion number of the extension is not cleared, so it can later be reactivated.

#### Deactivation with DISA

The IED can be deactivated also remotely by the extension user with DISA. First the user has to call the public DISA number, than, receiving the internal dial tone after a successful DISA identification the following digits for deactivation has to be entered:

#22#

After deactivation the diversion number of the extension is not cleared, so it can later be reactivated.

### Reactivation

#### Reactivation from extensions

The IED number can be reactivated by dialling:

*22*#

or

*22##

After a successful reactivation the user sees the same display picture as after activation.

#### Reactivation from the operator

The IED number of an extension can be reactivated also by the operator independently from the blocked status of the extension by dialling either:

*22* <diverted extension> #

or

*22# <diverted extension> #

#### Reactivation with DISA

The IED can be reactivated also remotely by the extension user with DISA. First the user has to call the public DISA number, than, receiving the internal dial tone after a successful DISA identification the following digits for reactivation has to be entered:

*22*#

or

*22##

### Extension blocking

This protection mechanism is available by entering the following digits:

*72#

and

#72*<password>#.

Especially for the IED functionality there is a small modification of the blocking principles. The diverted call always has the categories of the unblocked extension. This is true even in the blocked state of the extension. So the user can activate the IED on an extension, then block the extension and leave the office without making the diversion inactive.

For more information see the description Authorization Code, document 113/155 34-ASB 150 02 Uen.

### Bypassing IED

Bypassing IED is done in the same way as for other types of diversions.

If an extension user wants to bypass an IED that is active on the called extension, the usual diversion bypass mechanism can be activated:

*60* <internal directory/CN number, to be bypassed> #

If the operator’s display will indicate a diverted extension when calling an extension where IED is active. The operator may use the “bypass” menu key to ring directly the diverting extension.

A CN-party can also bypass IED.

### Transfer of calling/connected line information.

#### External call

In case of an activated IED, the received calling line information from an external caller can be transparently put through to the external diversion address (depends on the functionality provided by the ISDN network and the settings of command 1038 of the outgoing trunk line). If the external party answers the diverted call, the connect line information will be transparently sent backwards to the caller.

#### Internal call

If an internal party calls an internal extension with activated IED, the calling party does not receive the calling line information from the dialled extension, but the calling line information from the actually connected party (in this case the IED number of the called party will be shown on the display). Also the called party will receive the calling line information from the called party not from the diverting party.

## Capacity

IED can be utilized with external numbers that consist of two parts:

- part one: trunk-, route-, LCR- or PNR-directory number
- part two: external destination number

The total length must not exceed 24 digits.

## Limitations

Activation of an individual external diversion clears an activated Follow me or Direct Diversion.

Deactivating an IED does not reactivate a previously activated Follow me, however it reactivates a previously activated Direct Diversion.

Bypass of IED can only be executed by internal- and CN-directory numbers but not from external (public) callers.

The Operator cannot access the IED facility with DISA.

Note

IED of an external call (e.g. via DISA) to an external number will be disconnected automatically after approximately 15 minutes if the caller is a trunk without disconnection signal (for security reasons).

## Programming

3093 |  | Individual external diversion

0184 |  | Individual external diversion at internal calls

0185 |  | Individual external diversion at external calls

1038 |  | CLI/COL handling

## Equipment

None.

### FECU

The IED function is protected by the FECU which is connected to the CPU-D4. Without FECU no IED can be activated, a warning tone and a FECU warning log entry will be generated.

For a detailed description regarding FECU see Facility Description - General (155 34-ASB 150 02 Uen).

Revision: B © Ericsson Enterprise 2003