Nokia N76 Manual page 205

maximum duration of a speech turn is limited. The
maximum duration is usually set to 30 seconds. For details
of the speech turn duration for your network, contact your
service provider.
Warning: Do not hold the device near your ear
when the loudspeaker is in use, because the volume
may be extremely loud.
Phone calls always take priority over push-to-talk
activities.
For more information on push to talk, see the guides for
your device at www.nokia.com.hk/support or your local
Nokia website.
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