Motorola XPR 4380 用户手册

If a channel continually generates unwanted calls or noise 
(termed a “nuisance” channel), you can temporarily remove the 
unwanted channel from the scan list.

This capability does not apply to the channel designated as the 
Selected Channel.

When your radio “locks on to” an unwanted or nuisance 
channel, press the programmed Nuisance Channel Delete 
button until you hear a tone.

Release the Nuisance Channel Delete button. The 
nuisance channel is deleted.

Procedure: 
To restore the deleted nuisance channel, do one of the 
following:

Turn the radio off and power it on again, OR

Stop and restart a scan via the programmed Scan button, OR

Change the channel via the Channel Rocker.

You can turn on or off the ringing tones for a received Private 
Call (see Turning Radio Tones/Alerts On or Off on page 32).

Your radio can be programmed by your dealer to continually 
alert you when a radio call remains unanswered. This is done 
by automatically increasing the alarm tone volume over time. 

This feature is known as Escalert.

Call Alert paging enables you to alert a specific radio user to call 
you back when they are able to do so.
This feature is accessible via a programmed One Touch 
Access button.

Procedure:
When you receive a Call Alert page:

You hear a repetitive tone. The yellow LED blinks.

Press the PTT button within four (4) seconds of receiving a 
Call Alert page to respond to the Private Call.