Motorola SL7550 用户手册
Making and R
eceiving Calls
English
29
5
Release the PTT button to listen. When the target radio
responds, the LED blinks green, the radio unmutes and the
response sounds through the radio's speaker.
responds, the LED blinks green, the radio unmutes and the
response sounds through the radio's speaker.
6
If the Channel Free Indication feature is enabled, you will
hear a short alert tone the moment the target radio releases
the PTT button, indicating the channel is free for you to
respond. Press the PTT button to respond.
OR
If there is no voice activity for a predetermined period of
time, the call ends.
hear a short alert tone the moment the target radio releases
the PTT button, indicating the channel is free for you to
respond. Press the PTT button to respond.
OR
If there is no voice activity for a predetermined period of
time, the call ends.
7
Radio returns to the screen you were on prior to initiating the
call.
call.
For a Private Call, you hear a short tone when the call ends.
See Assigning an Entry to a Programmable Number Key on
page 43 for details on assigning an entry to a number key on
the keypad.
page 43 for details on assigning an entry to a number key on
the keypad.
Stopping a Radio Call
This feature allows you to stop an ongoing Group or Private Call
to free the channel for transmission. For example, when a radio
experiences a "stuck microphone" condition where the PTT
button is inadvertently pressed by the user.
Your radio must be programmed to allow you to use this feature.
Procedure:
While on the required channel:
to free the channel for transmission. For example, when a radio
experiences a "stuck microphone" condition where the PTT
button is inadvertently pressed by the user.
Your radio must be programmed to allow you to use this feature.
Procedure:
While on the required channel:
1
Press the programmed Transmit Interrupt Remote Dekey
button.
button.
2
The display shows Remote Dekey.
3
Wait for acknowledgement.
4
The radio sounds a positive indicator tone and the display
shows Remote Dekey Success, indicating that the channel
is now free.
OR
The radio sounds a negative indicator tone and the display
shows Remote Dekey Failed.
shows Remote Dekey Success, indicating that the channel
is now free.
OR
The radio sounds a negative indicator tone and the display
shows Remote Dekey Failed.
The display shows
Call Interrupted
, and the radio sounds a
negative indicator tone until you release the PTT button, if it is
transmitting an interruptible call that is stopped via this feature.
transmitting an interruptible call that is stopped via this feature.
NAG-LACR.book Page 29 Wednesday, May 2, 2012 2:47 PM