Annotation Description
11 Send key
• Press to initiate or answer duplex calls, or send messages.
• Press in home screen to enter Recent Dialed Calls.
12 FUNCTION key 1
By default:
• Short press – activates/deactivates the horn and lights feature.
• Long press – adjusts the backlight.
13 FUNCTION key 2
By default:
• Short press – turns the speaker on/off.
• Long press – activates/deactivates the screen saver.
14 FUNCTION key 3
• Short press – adjusts the backlight.
• Long press – unassigned.
15 Push-To-Talk (PTT)
Press and hold to talk in simplex calls or to initiate a group call, release it to listen.
16 Microphone
NOTICE: While pressing the expansion PTT (on the expansion head), other PTT press on an
accessory connected to the control head is ignored. This condition only applies to MTM5200,
MTM5400, and MTM800 FuG.
68015000585-MF
Chapter 2: Getting Started
21
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