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Selecting TMO or DMO Operation
Entering TMO or DMO
Enter TMO or DMO in one of the following ways:
• Press 6 2 1 (TMO) if the MTH650 is in DMO.
• Press 6 2 2 (DMO) if the MTH650 is in TMO.
• Press the TMO/DMO one-touch button (configured by your
Service Provider).
Calls (Trunked Mode)
TMO Group Calls
A Group Call is a communication between you and others in a
talkgroup. A Talkgroup is a pre-defined set of subscribers enabled to
participate in and/or invoke a Group Call.
Talkgroups are divided into ranges. Each range may contain
several talkgroups.
Making a TMO Group Call
1. Press until “Group Mode” appears on your display.
2. If this is the required talkgroup and range, press and hold the
PTT. Wait for the talk permit tone and then speak into the
microphone.
Release the PTT button to listen.
3. If you wish to call a talkgroup other than the one shown, scroll
through the talkgroups.
4. To select a range other than the one shown, press Optns,
followed by Range. Scroll through the ranges. Press Ok to select
the range, press Back to cancel range scrolling.
When you start a call, all members of the selected talkgroup who
have their units turned on, will receive the transmission.
The “No Group” message is displayed when you are out of the normal cover-
age area of your selected talkgroup. You must then select a new talkgroup
that is valid for your working location.
6866537D41-A.book Seite 19 Freitag, 5. März 2004 5:14 17
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