Speech Quality - Nortel CS 1000 Manual

the DAPs is low (about 250 mW), it can interfere with some sensitive
electronic equipment.
•
Traffic information
Gather information about user density, amount of traffic, and whether
redundancy is required. You require this information to determine the
number of DAPs that are required and therefore the required cabling.
A DAP must always have at least one channel free to allow handover
(either intracell or intercell handover). Make sure that the maximum
expected traffic density is not more than 11 channels simultaneously.
For more information, see

Speech quality

A relationship always exists between coverage and speech quality.
The greater the distance between the handset and the DAP, the lower
the quality. Therefore, you must understand the relationship between
the coverage and the expected voice quality. For an illustration of the
relationship between coverage and voice quality in an open environment,
see
(page
Figure 9
Coverage and speech quality in an open environment.
Be aware that DECT is a digital communication system. It incorporates a
"transmission errors hiding" system. This means that it tries to hide the
transmission errors. The results of this mechanism are as follows:
Figure 9 "Coverage and speech quality in an open environment."
33).
Nortel Communication Server 1000
SIP DECT Fundamentals
NN43120-123 02.02 30 March 2010
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"Site survey example" (page
Site planning 33
257).