SDS - Short Data Services 2-25
September 2008
Chapter 2 - MTM800 Product Information Manual 6866537D87-F
7.6 Terminal Features not Supported on Dimetra IP
These are terminal features that may be available on other systems, there is no commitment to
support these requirements and there is no guarantee that they will be supported.
Note: Some of the features have limited testing only.
7.6.1 SDS - TL Short Form Report
The terminal can be programmed to send a ‘Short Form’ SDS - TL received report when the
message originator enables Short Form Report. Short Form Reporting uses specially designated
SDS status values instead of the SDS Report.
7.6.2 Text Message Addressing
In addition to supporting targeting messages to TETRA individual address, the terminal is also
capable of sending messages to TETRA group and telephone addresses. The terminal does not
display its own messages sent to its group Address.
7.6.3 Text Message Coding
In addition to the 8 bit coding scheme it also supports the 7 bit alphabet for GSM compatibility.
When sending a message to a PSTN number 7 bit encoding is always used and when sending a
message to an ISSI or FSSN, 8 bit coding is used.
7.6.4 Service Center
The terminals support systems that employ store and forward service as indicated as part of the
cell’s broadcast information.
If a Service Center address is programmed in the terminal, the terminal will support the store and
forward operation.
The terminal will only notify users when messages are sent and not wait for the report from the
Service Center, this is due to deficiencies in the air interface that do not account for the long life time
of messages.
7.6.5 User Defined Data Types 1, 2 and 3.
Downlink SDS messages Types 1, 2 and 3 will always be routed to the PEI when an AT application
is registered.
Note: Type 1,2, and 3 user defined short messages are not supported by DMO SDS.
7.6.6 Sending SDS Status Messages
By default status messages will be sent to the address of the previous message if the user does not
specify a new address.
7.6.7 Call Me Back Feature
This feature allows a user to page another terminal by sending a Call Me Back request. This request
is implemented using a predefined status message
A certain time after initiating a private call to another terminal where the user has not answered, the
calling terminal displays the Call Me Back request screen option to its user, who is then able to send
the page.
To Next Page
Loading...
