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• Presented to you (if it has higher priority
than the on-going call).
• To accept the call, press
Join.
• To cancel the call, press End.
Receiving an Emergency Group Call
For detailed information, see page 26.
Receiving a Broadcast Call
For detailed information, see page 27.
Transmit Inhibit
You can activate the Transmit Inhibit (TXI) Mode before
entering RF sensitive areas, e.g. in hospitals or in potentially
explosive areas, where safety can be jeopardized due to
MTP850 transmission radiation.
In TXI Mode the MTP850 will not transmit under any
circumstances, except for the Emergency Call, which can be
initiated even if the MTP850 is in TXI Mode.
All MTP850 functions and keys which cause transmission,
e.g. registration to the network, change of talkgroup or folder,
sending messages, pressing PTT, etc. are disabled. In this
case the display shows “Not Allowed In TXI Mode” and the
MTP850 sounds the “Transmit Inhibit” tone.
When no danger to safety exists anymore (for instance if you
leave the RF sensitive area), the TXI Mode can be
deactivated and the MTP850 returns to standard operation.
Setting the TXI Mode is described in “Setting Transmit Inhibit
(TXI) Mode” on page 109.
Radiation of the MTP850 is only suppressed if the TXI Mode is
activated or the MTP850 is separated from power supply.
Group In Use
TG4
ID: David
Join End
6866537D80-A.book Seite 38 Freitag, 29. Juli 2005 4:15 16
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