User's Guide

Voice call type Description
Smart Call A special individual call made in Smart Call mode which allows
you to make group or broadcast calls to specific talkgroups without
the need to notify the network about the talkgroup change. Smart
Call mode is initiated from a configured soft key.
Smart call priority can have a call priority value from 0 (undefined)
to 15 (pre-emptive priority 4, emergency) in TMO and to a value
from 0 (undefined) to 3 (Emergency pre-emptive priority call) in
DMO.
Alarm Call The Alarm Call has the highest call priority in TETRA. Usually
initiated by pressing the Emergency Button. Alerts all other radio
users on the talkgroup of the emergency situation.
Data call types
Data call type Description
Individual full-duplex Circuit
Mode Data
Circuit Mode data calls have a very short transit delay and so are
suitable real-time services
Status Message A Status message may have 65536 possible status values. Of
these, value 0 is defined to mean ‘Emergency,’ values 1–32767 are
reserved, and values 32768–65535 are available for network or
user-specific definition.
SDS Message A user-defined message that can be sent by individuals and
received by individuals and talkgroups.
Packet Data TETRA Packet Data extends TETRA to act as an IP subnet. This
enables application programmers to build their applications in a
well-standardised environment.
Call History
The Call History records up to 20 recent individual calls. It can be customised to display Incoming
Calls or Outgoing Calls or both sets of call types in a list.
The following icons are used to distinguish different types of TETRA and PBX/PSTN
call events:
Icon Description
Received TMO call
Sent TMO call
Missed call. Call was not answered or cleared.
TETRA Alarm Call
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