Motorola XPR 5550 ユーザーズマニュアル

Just like a Private Call, while you can receive and/or respond to 
a Selective Call initiated by an authorized individual radio, your 
radio must be programmed for you to initiate a Selective Call.

Select the channel with the active group alias or ID. See 
Selecting a Channel on page 18.

Press the PTT button to make the call. The green LED lights 
up. The Private Call icon appears in the top right corner. The 
first text line shows the subscriber alias. The second text 
line displays the call status.

Wait for the Talk Permit Tone to finish (if enabled) and 
speak clearly into the microphone. 

Release the PTT button to listen. When the target radio 
responds, the green LED blinks.

If the Channel Free Indication feature is enabled, you 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.

You hear a short tone. The display shows Call Ended.

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:

Press the programmed Transmit Interrupt Remote Dekey 
button.

The display shows Remote Dekey.

Wait for acknowledgment.

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.

Call Interrupted