Basics
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BASICS
If a DECT system is to operate faultlessly, a homogeneous radio hop must be created that
provides sufficient calling opportunities (number of simultaneous connections) at the locations
required by the customer. The SIP-DECT Site Survey Kit serves this purpose.
With the equipment included in the SIP-DECT Site Survey Kit it is possible to determine the
locations for the DECT base stations as required by the customer.
The base stations are called Radio Fixed Parts (RFP). All 120 DECT duplex channels are used.
INITIAL CONSIDERATIONS
Generally speaking, the test kit can be used for two types of applications: planning a new project
or expanding an existing system. Both cases require in-depth consultation with the customer and
a maximum of detailed information so that the complex system can be configured as effectively
as possible. Providing the customer with comprehensive information allows him to make full use
of the available features, which will in turn result in high levels not only of application efficiency
but also customer satisfaction.
For new projects in particular, the following considerations must be taken into account:
•
Radio coverage area, capacity in terms of the number of connections (“traffic density”)
•
Known problem areas and what to do about them
•
Handover behaviour and what happens during a handover
•
Cordless groups and other features
With a project extension, a distinction must be made between the following possibilities:
•
Additional DECT phones without any notable increase in traffic simply require new entries in
the PBX numbering plan.
•
Additional DECT phones with additional traffic require not only the entries in the PBX
numbering plan, but also a verification of the existing radio cells to determine whether any
boost is required using additional base stations.
•
Coverage required over a greater area
COVERAGE AREA
The supply range of a DECT system can vary greatly from a geographical point of view. In most
cases, the bulk of the supply range is inside buildings.
A DECT system always relates to a PABX. Handover to a neighbouring DECT system in another
PABX never occurs, even if the DECT phone is logged on in both systems.
The planning can be carried out for both systems, however, as the measuring equipment is used
without a PBX.