TMO Voice Services 3-69
September 2008
Chapter 3 - MTM800 Product Information Manual 6866537D87-F
Selecting “Pre-emptive Demand Priority” enables the pre-emption (interrupt) of a user on another
call that has a lower priority.
18.4.3 Transmit Demand Private Priority
This entry determines the level of priority that the terminal will use for call set up of Semi-duplex
Private Calls.
There are 3 options associated with this field entry and are selected by clicking the pointer in the
field value box and selecting an option using the down arrow.
The available levels are:
• Low Demand Priority
• High Demand Priority
• Pre-emptive Demand Priority
Selecting “Pre-emptive Demand Priority” enables the pre-emption (interrupt) of a user on another
call.
Note: This parameter may be ignored by the system.
18.4.4 PSTN Gateway ID
This field displays the System Identity (ISSI) of the PSTN Gateway that is used to access the
telephone interface for telephone call set up to a PSTN. Selecting the reset option will display the
TETRA Standard ISSI.
18.4.5 PABX Gateway ID
This field displays the System Identity (ISSI) of the PABX Gateway that is used to access the
telephone interface for telephone call set up to a PABX. Selecting the reset option will display the
TETRA Standard ISSI.
18.4.6 PTT ID
Selecting this feature allows the ID of the terminal to be displayed at receiving terminals during
Group Calls (Express Group Call) and Private Calls (Express Connect Call).
18.4.7 Busy Override
During group call set up, the user may receive a busy indication from the system and although the
critical sites are busy and cannot support the Group Call, the user is allowed to request to transmit
the Group Call in the available sites.
To enable this option check the box.
18.4.8 Announcement Talkgroup Enable
An announcement call (also called multi-group call) is a special type of group call. It provides the
capability for the dispatcher or a terminal user to communicate with more than one talkgroup at the
same time.
A number of talkgroups are associated with an announcement talkgroup (ATG) so that when a call is
initiated to the ATG, all members of the associated talkgroups can receive the call. Each talkgroup
may have one associated ATG that it monitors (in addition to the selected talkgroup and the scan list
if activated).
An ATG has the highest priority level, thus enabling broadcast of the call to all these talkgroups.
To Next Page
Loading...
