BusinessPhone Communication Platform 7.0
Facilities

## Integrated Cordless

## Definition

The Integrated Cordless is based on Ericsson’s Business Cordless (DECT) system.

Integrated Cordless, the commercial name being BusinessPhone Cordless, means that in addition to wired telephones also cordless phones can be connected to the system.

## Use

The Integrated Cordless covers not only a “physical integration” of Ericsson’s Business Cordless for cost reduction, but also a “logical integration” for increased functionality with ASB 150 02.

That means that apart from all the benefits of DCT 1800 (multi-user - multi-cell architecture with full coverage, roaming, seamless handover,...), Integrated Cordless provides a great number of additional benefits.

Calls from cordless phone to internal directory numbers or CN-numbers via the public network or private network may be translated into DDI numbers by the individual number translation table.

For further information please refer to the document “Individual Number Translation” on page 1 (170/155 34-ASB 150 02 Uen).

## Operation

### General

Two kinds of boards for integrated cordless are available:

- IC‑CU 2 which provides the GAP (=Generic Access Profile) standard, control, roaming and interfacing of the cordless to ASB 150 02, digital speech transcoding, 8 speech channels, feeding and controlling up to 4 Base stations.
- IC-LU which provides digital speech transcoding, 8 speech channels, feeding and controlling up to
  8 Base stations.

The Integrated Cordless functionality within the ASB 150 02 system supports the DCT 1800 standard base station and standard / GAP- cordless phones as well as all other standard add-on equipment (e.g.: chargers, headset,...).

### 3 different ways to use the cordless telephone

- Users using a cordless phone “only”.

- Users who don’t have any need for additional wired phones.

- Users using a wired phone (desktop) and a cordless phone (on certain occasions).

- Some users need cordless phones only on certain occasions. So they are mainly using a wired telephone and take a cordless phone from a common pool whenever they need it.
- In this case calls to the wired phone of a user will be diverted to the cordless phone.

- Users using a wired (desktop) and a cordless phone in a Tandem configuration are treated as one logical unit.

- The Tandem configuration enhances the communication for users using a wired phone when sitting on their desk and need to be mobile within the company by using their own cordless phones. Both telephones have the same directory number but independent classes of service.
- In principle, the TANDEM unit works as follows:

- for incoming calls, both telephones will be treated as 1 single extension.
- for outgoing calls, both telephones will be treated as 2 seperate extensions.

Note

The TANDEM unit is not only applicable with a cordless phone and a wired one, it is also possible to set up a unit between two wired telephones (e.g.: second telephone for the executive, second guest room telephone). For more information, see TANDEM configuration (480/155 34-ASB 150 02 Uen).

### DECT Generic Access Profile

DECT is a general radio access technology for short range wireless telecommunications. It is a high capacity, pico-cellular digital technology for cell radio, depending on application and environment.

The objective of the Digital Enhanced Cordless Telecommunications (DECT) standard is to use digital radio technology to improve the performance of wireless voice communications.

In order to enhance standardisation for specific DECT applications, a number of profiles have been developed.

A profile is a protocol specification, which is used in conjunction with the DECT air interface. A profile defines a selection of messages and procedures from the DECT standard, and gives an unique description of the DECT air interface for specified service(s) and application(s).

GAP is the most important of all access profiles. It assures the basic interoperability of cordless phones and fixed parts (radio exchange and base stations) from different suppliers.

The Generic Access Profile (ETS 300 444) specifies the minimum functionality that is required in order to support basic telephony services. The functionality of the profile consists of the minimum mandatory requirements that allow a 3,1 kHz teleservice connection to be established, maintained and released between a fixed part and a cordless phone with the appropriate access rights, irrespective of whether the fixed part provides residential, business or public access services.

Basic interoperability for speech applications is defined in GAP. In practice this implies that customers have the freedom to purchase systems and cordless phones separately. They can pick the best-featured system and combine it with the cordless phones with the best functionality, provided the functionality is included in GAP.

In addition, GAP requires that multiple subscriptions are supported by cordless phones. Multiple subscriptions allow the use of one single handset in multiple environments and systems.

### DECT Generic Access Profile 2.0

DECT GAP, Version 2.0, improves GAP in following ways:

- Message Waiting Indication
- Idle Display
- Information Display
- B/C Number display
- Enhanced WHO CALLED List

#### Message Waiting Indication

A visual message waiting indication (MWI icon) will be activated on a cordless instrument when a message has been received.

#### Idle Display / Information Display

In idle state the user will get information on current diversion settings, text information set by the user and, in case of a Tandem configuration, a possible logged- on slave.

Basis of text formatting is a display size of 2 lines each with 12 characters. Texts longer than 12 characters will be broken so that the text string is distributed over on 2 lines. A maximum number of 24 characters is supported.

##### Display examples

Tandem Configuration:

Call forwarding - Diversion direct:

Call forwarding - Follow me to CN number:

Absence text info:

Dictaphone:

#### B/C Number Display

GAP 2.0 supports 3 display features: Calling number display (CLIP), connected number display (COLP) and redirected number display (RLIP).

Terminator’s (B/C) display is supported by calling and redirected display feature. Cordless display is capable of showing both information at the same time. It is possible to update calling and redirected number.

The display of the originator (A) party is connected number which also can be updated. Redirected information is not supported for originator’s display. Anyhow practical use does not demand it as the cordless user does not look at his display in that moment.

Note

RLIP Display feature is only possible on the DT570/DT590 cordless phone.

#### Enhanced WHO CALLED List

If a PBX group has cordless members, all parallel ringing calls on the cordless extensions that did not answer the call are added to the WHO CALLED list of the cordless although these calls are not of interest for the user. The same situation occurs on a master-slave unit with logged-on slave when master or slave is a cordless. If the wired part of the Tandem answers the call, the cancelled call on the cordless part is of no importance for the WHO CALLED list.

So for these special calls to cordless extensions the saving of calls in the WHO CALLED list is suppressed.

## Capacity

The ASB 150 02 integrated cordless handles a max. of:

- 60 base stations (7 IC-LUs + 1 IC‑CU2) and
- 210 cordless phones.

The total capacity of wired and cordless phones depends on the max. capacity of the ASB 150 02 system, it does not, however, exceed 288 extensions.
Max 1 IC‑CU_ and 7 IC-LUs per system may be installed. The number of necessary IC-LUs depends on the required number of base stations and speech channels (see also chapter Equipment).

#### Commercial point of view

From the commercial point of view, the number of cordless phones is determined by the FECU (=Feature Enabling Control Unit), a plug for the IC‑CU_. For basic configurations with up to 8 cordless phones, no FECU on the IC‑CU_ is required. For larger configurations, FECUs have to be plugged on the IC‑CU_. The following steps are available (number of cordless phones): 16, 24, 32, 48, 64, 108 and 210 cordless phones.

The DECT GAP protocol is supported by ASB 150 02 R10 or higher system releases.(R10=GAP1.0, R12=GAP2.0)

In order to have access to the protocol, the proper licensing concept has to be used, see Facility Description – General (155 34-ASB 150 02 Uen), chapter ASB150 02 Licensing. Without any licensing only outgoing calls are allowed.

## Limitations

### BusinessPhone 50

Due to the limited number of available board positions with BusinessPhone 50 (5 slots) and backplane restrictions, only the IC‑CU2 board is allowed to be installed. IC‑CU or IC-LU boards will not be supported!

### Traffic limitations

An IC-LU can provide up to eight base stations with a maximum of eight PCM channels. One base station can handle up to 8 speech channels. They can be connected to the PCM channels on the IC-LU. All base stations connected on the same IC-LU have to share the PCM channels. This can lead to a busy group because of Cordless traffic congestion. It is possible to use additional IC-LU boards to expand the PCM channel of an overloaded IC-LU. They can share their PCM resources to be able to regulate traffic peaks.

### GAP 2.0 support

GAP2.0 feature | DT 368 | DT 292 (290) | DT 4x0 | DT 4x2 | DT 570 | DT 590
MWI | x | x | x | x | x | x
Idle- & Information Display | x | x | x | x | x | x
A no. Displ.(CLIP) | x | x | x | x | x | x
B no. Displ.(COLP) |  | x |  |  | x | x
C no. Displ.(RLIP) |  |  |  |  | x | x
Enh.anced Who Called List |  | x*) |  |  | x | x

## Programming

### Commands via BMS

1. Connection parameters

Dect Connection type
Connection switching | only one connection to BusinessPhone;no cable to IC-CU2
Dual Connection | 2 logical connections to BusinessPhone; one separate cable to IC-CU2 or a port on the IPU

1. Connect to BusinessPhone (go Online)
2. Go to “Dect…” in the tree and press “Activate DECT”
   During the progress you see “Activating DECT connection”
3. As soon as BMS responds “The DECT system is now available for OAM!” - press “Dect…” in the tree to see all possibilities:

1. Go to “Dect...” -> “Boards…” and press “Properties” to see the respective Board Types, SW versions and more.
2. Go to “Dect...” -> “Base Stations…” and press “Properties” to see the respective Base Station IDs, SW versions and more.
3. Go to “Dect...” -> “Portables…” and press “Properties” to see the Cordless Phone Numbers, Addresses and more.

Note

To subscribe a cordless phone you first have to read the IPEI code from the respective cordless phone !

- DT288: go to “information” - > “show IPEI”
- DT290: go to “information” - > “show IPEI”
- DT292: go to “information” - > “show IPEI”
- DT368: go to “information” - > “show IPEI”
- DT4xx: go to “settings” -> “system” -> “information”
- DT570/DT590: “ * # 0 6 # “

1. Go to “Dect...” -> “Information” to see

1. Call events
2. Service messages
3. Statistics
4. Reset History
5. Log info to printer

See also document Tandem Configuration, (480/155 34-ASB 150 02 Uen).

The following commands have to be programmed for installing Integrated Cordless:

0186 |  | Handle Cordless Display Texts?

2061 |  | First priority link for synchronisation

2062 |  | Second priority link for synchronisation

2063 |  | Third priority link for synchronisation

2064 |  | Fourth priority link for synchronisation

2065 |  | Fifth priority link for synchronisation

2094 |  | GAP Version

2111 |  | Alerting timeout for cordless

0172 |  | Fixed diversion destination for internal calls, if cordless/IP-Instrument is not available

0173 |  | Fixed diversion destination for external calls, if cordless/IP-Instrument is not available

6803 |  | Tenant-Route

1936 |  | Prefix calling number for E.164 number plan with international type of number

1937 |  | Prefix calling number for E.164 number plan with national type of number

4501 |  | Predefined info - Text

4502 |  | Predefined info - Meaning of digits 1-4

4503 |  | Predefined info - Text for cordless

## Equipment

The following boards are necessary for the installation of the “integrated cordless”:

- IC‑CU2

- Integrated Cordless - Control Unit, Version 2
  based on the IC‑CU and IC-LU board, GAP protocol, each IC‑CU2 offering:

- 8 speech channels
- 4 ports for base stations

- IC-LU

- Integrated Cordless - Line Unit
  based on the DCT1800 GAP SLU-board, each IC-LU offering:

- 8 speech channels
- 8 ports for base stations

- FECU for IC‑CU_

- Feature Enabling Control Unit (=plug-in board for the IC‑CU_ with SW-key for enabling configurations
  of more than 8 cordless phones. See also chapter Capacity.)

- ASB 150 02 licensing

- In order to have access to the GAP protocol, the proper licensing concept has to be used, see Facility Description – General (155 34-ASB 150 02 Uen), chapter ASB150 02 Licensing. Without any licensing only outgoing calls are allowed.

- PUB 5 or higher version

- Backplane for ASB 150 02 system cabinet (only valid for BP 250).

The IC‑CU_ and all IC-LU boards have to be mounted in the same cabinet (containing the backplane PUB 5 or higher), but not necessarily in the first cabinet (for more information see document 1531-BDV 113 08 Uen).

Revision: J © Ericsson Enterprise 2005