33/1531-ANF 901 43 Uen C 2017-03-28
User Guide
Site Survey Tool for DECT
14
5
BROADCAST AND MULTICAST MESSAGING
Special requirements need to be considered when planning a system for broadcast and
multicast messaging.
Broadcast and multicast messages are without any handshake procedure between the
base stations and the handsets instead a number of retransmissions are being made to
increase the probability of a complete transmission. The sending application receives a
confirmation that the message has been sent and received by the radio exchange/base
stations but not the handsets.
Advantage of sending broadcast/multicast messages:
•
Quick transmission to a large number of users
•
Low system capacity usage
Disadvantage of sending broadcast/multicast messages:
•
No individual technical confirmation, thus lower security
An appropriate value for installations where broadcast and multicast shall be used is to
always have field strength above -65dBm.
