10
Special Calls
English
Special Calls
Short Data Messages (SDM)
Short data messages may be set up, sent and
received using the radio keypad and controls.
Outgoing data messages from the keypad are
limited to numeric data only in any combination of
up to 20 characters.
Note:
Non keypad radios cannot generate or display
incoming SDMs and may only be used for data
when connected to external data terminal
equipment (DTE).
Receiving Short Data Messages
On receiving an SDM, tone G sounds and the
display shows:
The data message icon
is lit whenever SDMs
are in the data message stack, i.e. displayable,
unless the message display has been turned off
(refer to Displaying Incoming Data).
Displaying Incoming Data
The short data message display can be switched
ON and OFF using the keypad controls as follows:
♦
Enter
23000
to turn OFF the incoming
short data display.
♦
Enter
23001
to turn ON the incoming
short data display.
The SDM display defaults to ON, however the option
setting is retained when the radio is switched off.
Note:
This feature is important if the radio is being used
with external data terminal equipment (DTE), to
prevent loss of data messages.
With the SDM display set to ON, on reception of a
valid SDM, either it can be displayed by the radio
and/or passed to external DTE. In either case, the
SDM is received and accepted (acknowledged) by
the radio. Only if the SDM is of an un-displayable
format AND the external DTE is disconnected, is the
SDM rejected by the radio.
With the SDM display set to OFF, on reception of a
valid SDM, it will not be added to the data message
stack for display, but passed to the external DTE,
which if accepted will be acknowledged by the radio.
However, if the DTE is not present e.g.
disconnected, the SDM is rejected by the radio. In
this case the SDM will not be accepted
(acknowledged) by the radio and will not be lost.
DATA RECEIVED
✱
#
✱
#
Special Calls/Short Data Messages
GM1200 (EN) Stage4 Page 10 Thursday, May 1, 1997 1:28 pm
