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M3SR Series 4100
5.4 Message Service
5.4.1 Basics of Message Service
The Message Service functionality is used for the exchange of short data messages (SDM)
between radios in the same network.
Message Service is available with these waveforms in combination with waveform services
IP-Data and Voice-over-IP Data:
SECOM-V
SECOM-H
OFDM (Orthogonal Frequency Di-
vision Multiplex)
ALE 3G
Received messages can be accessed via the man-machine interface (MMI) and remote con-
trol interfaces. An external PC-based application may be used for accessing / displaying or
further processing of stored messages.
5.4.1.1
Storage Strategy
Incoming alert and SDM messages are stored persistently on the radio. The receive buffer
depends on the currently selected Preset Page. The radio can support individual receive
buffers for up to ten IPoA Preset Pages. If the receive buffer is full, any new incoming mes-
sage will subsequently replace the receive buffer's oldest message. The oldest message will
be deleted in the process.
5.4.1.2
Message Size
An SDM message with standard encoding may hold up to 200 characters.
Operating Manual 6175.4760.02 – 01
R&S M3TR
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Message Service
R&S M3SR Series 4100
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