OPERATING MANUAL
7610-4700-1201
Issue A
6-1
6 SERVED SERVICES TO THE RADIO USERS
Basic services that are supported by 4700 APCO25 Handheld Radio are summarized in
this section.
6.1 EMERGENCY CALL
Radio demands emergency alarm services by this call. If the red button at the top panel of
the radio is pressed more than 3 seconds, radio transmits "help" info to the emergency call
address (channel), which is determined before. If the call is started at the system channel
in the coverage area it is transmitted to the center, if it is started at direct mode caller
radio's identity appears at all radios' display and caller radio is warned by an audible alert.
To exit from emergency call mode button must be pressed more than 2 seconds.
6.2 GROUP CALL
This call is started to a certain group at Digital Crypted Mode. To start group call:
• ‘*’ button is pressed and the required group number ’00001-65533’ is dialed,
• PTT Button is pressed.
Call can only be listened by the radios, which are included in the group.
6.3 GENERAL CALL
This call is started to all radios at Digital Crypted Mode. To start general call:
• ‘* *’ and ‘OK’ is dialed,
• PTT Button is pressed.
Call can be listened by all radios in the existing channel.
6.4 INDIVIDUAL CALL
This call is started to only one radio at Digital Crypted Mode. To start individual call:
• ‘# #’ is dialed,
• 8 digit radio identity to which the individual will be started is dialed,
• ‘OK' pressed.
After establishing an individual call (audible alert is heard and 'INDIVIDUAL' writes at the
display) PTT Button must be pressed with in 4 seconds. If both sides do not make
transmission in 4 seconds call is terminated.
If there is individual call at the channel other radios cannot make transmission.
6.5 CALL ALERT
Radio leaves a warning message to another radio to call him back. To start call alert at the
authorized radio:
• ‘#’ button is pressed 4 times,
• 8 digit radio identity to which the call alert will be started is dialed,
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