Motorola GM1280 User Manual page 32

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.
Summary
If using the radio only, the SDM display should
be set to ON .
If using the radio with external DTE which is
permanently connected in normal use, the
SDM display should be set to ON .
If using the radio with external DTE which may
be disconnected in normal use, then set the
display to OFF prior to disconnecting the
external DTE to avoid SDM loss.
Storing SDMs
Incoming SDMs are stored on receipt in the
Short Data Message Calls List. Up to ten
SDMs can be stored by the radio. The data
K
message icon is lit whenever SDMs are in
the calls list.
SDMs are not stored when the radio is
switched OFF, except for one SDM only which
can be saved.
English 30
Interrogating the SDM Calls List
When an SDM call has been stored by the
radio, the display will show:
Data Received
With the display showing 'Data Received' ,
pressing any of the menu buttons provides a
quick access into the Data Calls List.
The Data Calls List can also be entered
directly by pressing the Data button (if
programmed) when the radio is in the IDLE
STATE or via the menu.
If using the Data button, follow the procedures
from step 4 below.