Figure 7: SDS Remote Control Overview
T M O/DMO
Radio
T E
C o n tro lle d Radio
S w M I
C o n tro llin g T erm in al
T M O
C o n tro llin g Terminal
The SDS remote control functionality works in both Trunked Mode Operation (TMO) and Direct Mode
Operation (DMO) and the remote control PDUs are sent using Terminal Equipment (TE).
You can use the feature only after a successful authorization, which requires entering a valid remote
control PIN number.
The remote control messages can be sent to a group or individual radios.
A controlled radio receives over the air control information using SDS type 4 with Transport Layer (TL)
on the specific PID number defined in the codeplug. If the received control message is originated from
one of the Individual Short Subscriber Identities (ISSI) present on the radio authorized ISSI list, the
radio executes received command and sends a response.
If configured by service provider upon the reception of SDS Remote Control Service (AT command)
request, the radio gives an audio-visual notification.
The service provider has two options:
Limited SDS RC
and
Full SDS RC
modes.
The SDS remote control in the
Limited SDS RC
enables the following:
• Switching between TMO or DMO modes (read, change, notify) for individual radio and group using
the
+CTOM
AT command.
• Selecting a talkgroup (read, change, notify) for individual radio and group using the
+CTGS
AT
command.
• Reading and setting the scanning state using the
+CTSCAN
AT command.
• Collecting Network Information from individual radio - Network Registration Status and Cell Signal
Quality using respectively the
+CREG
and
+CSQ
AT commands.
• Reading individual radio GPS position using the
+GPSPOS
AT command.
• Setting volume level for individual MT using the
+CLVL
AT command.
• Rebooting the radio using the
R
AT command.
• Retrieving the mobility log using the
+MCMLOG
AT command.
• Reading the SDS messages, and notifying new messages in Inbox/Outbox using the
+MCTSMSG
AT command.
• Retrieving the call-out messages using the
+MCCOMSG
AT command.
The SDS remote control in the
Full SDS RC
enables the radio to use most of the AT Commands. To
see which AT Commands are not supported, refer to the
AT Commands Programmer`s Guide
.
MN003465A01-AF
Chapter 2 : Services and Features
39
