Gigaset Pro N720 DECT IP Technisches Handbuch

N720DECT IP

Site Planning and Measurement Guide

Multicell System

VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299

1
Table of Contents
Table of Contents
Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
The Gigaset N720 DECT IP Multicell System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Criteria for an optimum DECT wireless network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
How to proceed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Projecting the DECT network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Determining the requirements for the telephone network . . . . . . . . . . . . . . . . . . . . . 9
Conditions for the positioning of the base stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Preliminary identification of the positions of the base stations . . . . . . . . . . . . . . . . . 18
Taking measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Defining limit values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Measuring the wireless range of the planned base stations . . . . . . . . . . . . . . . . . . . . 24
Evaluating measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Working with the Gigaset N720 SPK PRO . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Checking the package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Further recommended accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Setting up the measuring base station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Starting up the measuring handset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Operating the measuring handset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
DECT installations in special environments . . . . . . . . . . . . . . . . . . . . . . . . 41
Customer care and help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Questions and answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Our environmental mission statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Environmental management system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Contact with liquid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Authorisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299

Safety precautions

Warning

Read the safety precautions and the user guide before use.

Use only the power adapter supplied.

Use only the recommended, rechargeable batteries (£page 45) as this could

otherwise result in significant health risks and personal injury.

Using your telephone may affect nearby medical equipment. Be aware of the

technical conditions in your specific location e.g., doctor's surgery.

Do not hold the rear of the handset to your ear when it is ringing or when

speaker mode is activated, otherwise you risk serious and permanent damage

to your hearing.

Your Gigaset is compatible with the majority of digital hearing aids on the mar-

ket. However, perfect function with all hearing aids cannot be guaranteed.

The handset may cause an unpleasant humming or whistling noise in hearing

aids or cause them to overload. If you require assistance, please contact the

hearing aid supplier.

Do not install the base station and charger in bathrooms or shower rooms.

The base station is not splashproof.

Do not use the devices in environments with a potential explosion hazard, for

example, paint shops.

If you give your phone to a third party, make sure you also give them the

user guide.

Remove faulty devices from use or have them repaired by our Service team, as

these could interfere with other wireless services.

VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299

Introduction

This document explains the preparations necessary to install a multi-cell DECT network

and take measurements for the optimum positioning of the base stations. It also provides

technical and practical background information.

The Gigaset N720 DECT IP Multicell System

The Gigaset N720 DECT IP Multicell System is a DECT multi-cell system for connecting

DECT base stations to a VoIP PABX. It combines the options of IP telephony with the use

of DECT telephones.

The following illustration shows the components of the Gigaset N720 DECT IP Multicell

System and how they are embedded in the IP telephone environment:

uDECT Manager Gigaset N720 DM PRO

Central management station for managing the DECT network. One DECT Manager

must be used for each installation.

– Manages up to 20 DECT base stations

– Manages up to 100 handsets on multi-cell systems

– Enables division into subnets (Cluster formation)

–Forms the interface to an IP PABX (e.g., Gigaset T500 PRO or Gigaset T300 PRO)

A Web user interface is available for configuring and administering the DECT network.

uGigaset N720 IP PRO DECT base stations

– These are the cells of the DECT telephone network.

– Each base station can manage up to eight calls simultaneously (see the Capacity

section £page 6)

PABX

VoIP, ISDN, analogue

DECT

base stations

Gigaset N720

IP PRO

DECT Manager

Gigaset N720 DM PRO

LAN

Configuration via

Web interface

Handover & roaming

Gigaset IP PRO telephones

e.g., Gigaset DE900 IP PRO

Gigaset

handsets

VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299

Introduction

uGigaset handsets

– Up to 100 handsets can be connected and up to 30 calls conducted simultaneously.

The following handsets are recommended: Gigaset SL610H, SL400H, S810H, E49H.

– Subscribers can accept or initiate calls in all DECT cells with their handset (Roam-

ing), and can also switch between the DECT cells during a call (Handover).

uPABX

You can connect your DECT telephone system to a PABX for VoIP, ISDN or analogue

telephony, e.g., a Gigaset T500 PRO.

– Establishes the connection to a public telephone network for analogue, VoIP or

ISDN calls.

– Enables central management of telephone connections, directories, network mail-

boxes, etc.

uCluster formation with Gigaset N720 DECT IP Multicell System

You can divide DECT base stations that you have installed at your location into several

independent groups, i.e., clusters, and manage them using one Gigaset N720 DM PRO

DECT Manager.

The DECT Manager is connected to the base stations and the PABX via the local net-

work and is therefore not dependent on DECT ranges. This means that you can install

separate DECT islands at your location but manage them centrally, i.e., they have

access to the centrally configured IP connections, directories, etc.

For further information about the options provided by the Gigaset N720 DECT IP Multicell

System, and about installing, configuring and operating the Gigaset devices mentioned,

see the relevant user guide. These are provided on the product CD or on the Internet at

www.gigaset.com/pro.

Gigaset offers the Gigaset N720 SPK PRO (Site Planning Kit) to help you with measuring

the wireless coverage and quality of your DECT network. For information on setting up

and using the Gigaset measuring equipment, see the Working with the Gigaset N720

SPK PRO chapter £page 29.

LAN

DECT

Manager

Cluster 1 Cluster 2

VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299

Introduction

Criteria for an optimum DECT wireless network

A carefully planned DECT wireless network with adequate coverage is the prerequisite for

operating a telephone system that offers good call quality and sufficient call options for

all subscribers in all buildings and areas belonging to the PABX.

It is difficult to assess the technical wireless conditions of a DECT installation in advance

as they are influenced by many environmental factors. Therefore, the specific circum-

stances on-site must be determined by taking measurements. This produces a reliable

statement about the material required as well as the locations of the wireless units.

Various aspects need to be taken into consideration when planning a DECT wireless net-

work. The following requirements must be considered when deciding how many base

stations are required and where they should be placed:

uSufficient DECT wireless coverage of the entire site so that every subscriber can be

reached.

uSufficient wireless channels (DECT bandwidth), in particular in "hotspots", to avoid

capacity bottlenecks.

uSufficient overlap of cells to enable synchronisation of the base stations and to guar-

antee freedom of movement for subscribers when making calls.

Wireless coverage

The selection of locations where the base stations are to be installed should guarantee

optimum wireless coverage and enable cost-effective wiring.

Optimum wireless coverage is achieved if the required reception quality is delivered at all

points of the wireless network. If costs need to be considered, this should be done with a

minimum number of DECT base stations.

To ensure an interference-free switch of call connections from one cell to another (hando-

ver), there must be an area where good reception is ensured for both base stations. To

achieve this, a minimum quality for reception must be defined.

Wireless cell

Base station

Overlap

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Introduction

Signal transmission

The ideal signal transmission of a base station is

shaped like a ring, i.e., so that the registered

handsets can be the same distance away from

the base station in all directions without the

wireless signal being interrupted.

However, the transmission is influenced by var-

ious environmental conditions. For example,

obstacles such as walls or metal doors can

impede the wireless signals or interfere with

their even transmission.

You should investigate the actual conditions

that the planned wireless network will be sub-

jected to by measuring the signal transmission

of the measuring base station at appropriate

positions.

Capacity

The capacity of the cells must be large enough to guarantee that the subscribers can be

reached in high-density traffic. A cell is at full capacity when the number of connections

required for each base station is larger than the number of possible connections.

A Gigaset N720 IP PRO can manage eight connections simultaneously when operated in

narrowband mode (£Narrowband mode, page 49). In broadband mode, four simulta-

neous connections are possible (£Broadband mode, page 47).

There are two options for increasing the capacity:

uReducing the distance between the base stations.

This means that the cells overlap more, giving

the subscriber access to the base stations of

the neighbouring cells. This results in a more

even wireless quality. However, this can result

in considerable installation costs for an exist-

ing system.

uInstalling parallel base stations.

The cell size remains generally constant but

the number of possible connections increases.

Installing the base stations close to one

another means that the additional assembly

costs are low, but a minimum distance must be

observed between the base stations (£Tech-

nical conditions, page 11).

To keep the costs for the devices and for the

installation and maintenance low, as few base stations as possible should be installed.

VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299

Introduction

Overlapping and synchronising

For interference-free cooperation in a multi-cell DECT network, the base stations must

synchronise. In order to synchronise the base stations and ensure a smooth handover, the

cells must overlap.

A sufficient number of large overlapping zones between neighbouring cells must be

ensured. To achieve synchronisation, the reception must be of sufficient quality to ensure

that the base stations can receive one another securely. For a handover, a handset must

have a connection of sufficient quality to both base stations. You will find information

about possible interferences in the Defining limit values section £page 21.

The more densely the base stations are installed, the greater the overlap. Here, a compro-

mise must be found between keeping the area relatively open and installing the lowest

possible number of base stations.

Handover overlap

Synchronisation overlap

VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299

Introduction

How to proceed

Use the following guide to quickly locate the most important topics.

If you have any questions about using your measuring devices, please contact

our Customer care team (£page 43).

Information on ... ... is located here.

Determining the requirements for the telephone network

Determine the requirements for the telephone network and collect

information about the environmental conditions for the planned

DECT wireless network.

page 9

Creating an installation plan

Create a building plan and enter the planned DECT base stations in

this plan. You should take account of the general conditions deter-

mined and the technical requirements of DECT telephony in the

process.

page 18

Taking measurements

Use the installation plan to take measurements and adapt the instal-

lation plan to your measurement results.

page 20

Working with the Gigaset measuring equipment

Have you purchased the Gigaset N720 SPK PRO (Site Planning Kit)?

Here you can read about how to set up the measuring equipment

and how to use it to take measurements.

page 29

Special environments

Do you want to set up your DECT network in a difficult environment?

Helpful information and tips are available here.

page 41

VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299

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