Nokia TMR880 User Manual page 31

PTT key. During a two-way call, the PTT key is not used and you can speak as in a
conventional phone call.
To speak during a one-way call, press and hold the PTT key. You can start speaking
after a short tone is played and (transmitting) appears on the display. Release
the PTT key to let the other party speak. (receiving) is displayed when you
receive a one-way call.
Express calls and group calls are one-way calls. Phone calls are normally two-way
calls, but your radio is also capable of making and receiving one-way phone calls.
The network changes the call type if needed.
For group calls in network mode, you can set the PTT key to make a call either
always to your selected talk group or to the currently active scanned group (if
there is no active scanned group, the call is made to the selected group). See PTT
key use on page 51.
Copyright © 2005 Nokia. All rights reserved.
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