MMI Features 2-55
September 2008
Chapter 2 - MTM800 Product Information Manual 6866537D87-F
Using Supplimentary Service Messages (SS-DGNA), the terminal can becommanded to add talk
groups to its existing list of talk groups, to attach or select these talk groups from the list, or modify
parameters of existing talk groups.
DGNA Auto Attach or ‘Forced Attach’ enables a dispatcher to send a talk group to a user group that
will then automatically join(affiliate to) the new talk group. No user actions are required as this is a
dispatcher controlled operation.
This feature ensures that a dispatcher can quickly mobilise a team of terminal users as and when
required to meet a current situation.
16.10 Favourite Talk Groups
This user friendly feature enables a user to create a ‘Personal Range’ of own talk groups from pre-
programmed talk groups within the terminal and is saved in the terminal during power down.
It is a shared feature for both TMO & DMO operating modes and has a capacity of 16 talk groups for
the End Stop MTM800 model and 128 talk groups for all other terminal models.
16.11 Receiving Audio during Text Message Editing
When in a group call, the audio is no longer lost when composing a text message. It is now possible
to hear the group call audio, but audio will be lost for a very short period of time as a result of the
message transmission.
16.12 Talk Group Index Entry via the Keypad
The Talk Group (TG) Index feature can be entered via the keypad when only in either TMO or DMO
talk group mode, in idle or receiving but nor transmitting.
In this mode the terminal does not look at the Talk Groups per range, but as consequtive numbers
from the first talk group of range 1 to the last talk group in the last enabled range. i.e. 4 ranges of 16
talkgroups is equal to a list of 64 continuous talk groups, where a keypad entry of 17 equates to the
first talk group of range 2.
To enable this functionality, the required keypad presses are of a shorter duration than that required
when using the one touch button functionality.
Once the first digit has been entered a ‘Find’ soft menu appears and on completion of the talkgroup
digit entry, pressing the associated soft button will cause the talk group to be displayed. Once the
talk group is displayed, the user is then presented with the ‘Cancel’, ‘OK’ selectable soft button
options.
Selecting ‘OK’ will attach the terminal to the group, or pressing the PTT will attach the terminal to the
group and set up a call to that selected group.
The terminal will actively remain on the last selected talk group during the search process and calls
can be heard and answered via the PTT while the search screen is still displayed, thus allowing the
user to complete the talk group selection process.
Incorrect keypad entries are cleared using the ‘Clear’ option of a soft button.
It is also possible to enter a known talk group GSSI via the keypad and press the PTT to set up a call
without using the search functionality above.
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