Ericsson LZT-1872R1A - Manual (Page 22)

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1/ALERT Key
The horn alert option can be pre-programmed
to: 1) generate a 1 second horn blast, 2) generate
three 1/2 second horn blasts, or 3) generate a
continuous horn blast when a call is received. This
function is enabled or disabled by pressing F and
then 1 . Pressing PTT during the alert tone
prevents blowing the horn. The horn alert remains
enabled for subsequent calls until disabled.
2/Call Timer
The call timer function causes the time
duration for the current interconnect call to be
displayed. Note that the call timer starts when an
interconnect call is initiated. During a conversation
the call timer is displaying on the middle line of LCD.
The time display is automatically removed after a
preset time-out or can be removed from the display
by pressing C. Call timer can be refresh by
pressing F followed by 2. Time of the last
interconnect call will be displayed.
4/EXT MIC (HANDSFREE)
The external mic (Handsfree) option routes
audio to an external Portable or Vehicle Handsfree
unit. To enable the external mic, press F followed
by 4 . Toggling this function provides the user with
the capability to have private conversations or allow
other passengers in the vehicle to participate in the
conversation (Vehicular Option). The character
display shows "INT MIC" if the internal speaker/mic is
currently active. To toggle the state to the external
speaker/mic press 4 key twice while the FCN icon
is on. (NOTE: With an external device connected the
Allegra will always “power-up” with the external unit
enabled.)
5/SIMPLEX
When operating in the simplex mode, the
MUTE icon follows the state of the transmit audio.
While in simplex mode, PTT must be pressed prior to
speaking. (NOTE: Applicable only in the interconnect
mode.)
6/MUTE
This function enables the user to mute the
transmit audio when operating in the duplex mode. To
disable the microphone so the called party cannot
hear the conversation, press F followed by 6 .
MUTE is displayed. Re-enable the microphone using
the same key press sequence. The call is muted only
for the duration of the current interconnect call.
8/SCAN