3-74 Customer Programming Software (CPS)
6866588D21-D Chapter 3 - MTP850 Ex/MTP810 Ex Product Information Manual March 2009
19.2 DMO Short Data Service
The feature offers TETRA Short Data Service (SDS) supporting transfer of short data messages
and pre-coded status transfer called Status Transfer Service (STS) as well. For short data text
messages all four types of data bearer service (SDS type 1|2|3|4) are supported. SDS Type 4 can
be sent directly to the end user or via Service Centre (if provide by infrastructure).
19.2.1 DT314, Msec
This timer defines time-out for reporting SDS failure after sending DM-PRE ACCEPT.
The range for this timer is 0 - 1000 msecs.
19.2.2 DT314
This constant defines number of transmissions of unacknowledged DM-SDS UDATA packet data
units.
The range for the constant is 1 - 6 times.
19.2.3 Pre-emption Timer
This timer defines the maximum time to wait for pre-emption response (DM-PRE ACCEPT or DM-
REJECT).
The range for the timer is 0 - 5000 msecs.
19.2.4 DMO Voice Priority over SDS
Determines if DMO Voice has more or equal priority compared to DMO SDS and Status.
The options are:
• Voice has more priority than SDS
• Voice has equal priority as SDS.
To select the option, put the pointer into the field value, click on the arrow, and drag the pointer to the
desired option.
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