12
13 Speaker (under keypad)
14 Four Way Navigation Key
Press up, down, left or right for list scrolling, while
moving around the menu hierarchy, or for alphanumeric
text editing.
15 Send Key
Used to initiate or answer Duplex calls (such as Phone
Calls), or send status and text messages.
16 Soft Key(s)
Press to select the option that appears in the display
directly above the left or right soft key.
17 Programmable Side Keys 1 and 2
Default programming: upper Side key activates/
deactivates Backlight; lower Side key activates Screen
Saver. (See also No. 20)
18 Push-To-Talk Button (PTT)
Press and hold this side button to talk in Simplex calls,
release it to listen. Press to send status and text
messages.
19 Earpiece
20 Programmable Rotary Knob
Default programming: “Dual” - Press the knob to toggle
between “volume” and “list”. Side keys (No. 17) operate
as programmed.
21 Programmable Emergency Button (on top of the
MTP850)
Press and hold to enter Emergency mode, and send
Emergency Alarms (as programmed). Press and hold
to start an Emergency Private Call (Simplex or Duplex).
When the MTP850 is Off, press and hold to power on in
Emergency Operation or in standard mode (as
programmed).
22 Side Connector
Provides connection for accessories.
(MTP850 S or MTP850 FuG)
Item Description
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