Motorola MTM800 Product Information Manual page 77

SDS - Short Data Services
The user is alerted to the arrival of new messages and the terminal will display the mail message
screen, allowing the user to instantly read the message. It is possible to store the message in the
terminal's text message buffer.
7.3.3 PEI Access to Status Messaging.
The PEI enables external applications to send and receive status messages.
7.4 Text Message Service
Terminals support an internal text messaging application that uses the TETRA SDS Transport Layer.
The terminals are able to send and receive up to 140 bytes of data per text message, which can be
up to 160 characters if 7-bit encoding is used, normally its 140 characters with 8 bit coding.
Benefits:
Users can read, edit, create, store, delete and send text messages (140 characters) via the
terminal keypad/display
Receipt of message is acknowledged to ensure delivery
"Consumed message" report indicates whether the message was read
"Prompt" feature allows customized prompts for built-in database inquiries (e.g. "Enter social
security number")
Each prompt has a destination address, protocol identifier and editor associated for ease of
use
Predictive text editor (iTAP) ensures that only one button press is required per character input
7.4.1 Sending a Text Message
It is possible to compose or edit previously saved text messages prior to their transmission to a
TETRA address. The message is sent with a request for a received delivery report.
7.4.2 Receiving a Text Message
On reception of a text message, the terminal places the text into a circular buffer, the user is notified
of the new message and the message will be displayed in the mail message screen.
If a delivery report is requested, the terminal sends the report upon receipt of the message.
If a consumed report is requested, it will only be sent when the user reads the message. It is
possible for the user to read the message when out of service (not in the system coverage area) and
a report will not be sent.
7.4.3 Saving Text Messages
The user has the capability of saving received or composed/edited out going messages, these
saved messages can be edited and sent as required and can only be erased by explicit user action.
7.4.4 Time Stamp
Each message is time stamped by the system and displayed on the receiving terminal.
7.4.5 Text Coding Scheme
The terminals support the ISO/IEC 8859 - 1 Latin 1 (8 bit) alphabet coding scheme for both Uplink
and Downlink messages.
September 2008
Chapter 2 - MTM800 Product Information Manual
2-23
6866537D87-F