Audio (Event Type)

Sub-event flags in the Audio Event

The Audio event is intended for PA control or mobile radio keying, that is, as an extension to the audio function of the 'owner' station. Normally the action for this event is the operation of a RCO. The Audio event is divided into a number of sub-events, which are closely related to each other, and which can be combined to operate the same RCO. UDP groups cannot be used with Audio events. Audio events are not associated with a "When Related to" number. In AlphaPro the sub-events can be selected after clicking the 'Details'-button.

The sub-events flags are devided in two groups. Flags related to point-to-point conversations:

• Always
• Incoming Calls
• Private Ringing
• Never

Only one of these flags can be enabled at a time.

The other group of sub-event flags are related to "other" types of audio:

• Voice Paging (i.e. reception of group call or all call)
• Audio Program/Alarm Distribution (i.e. listening to audio from the audio program channel or an alarm messages from the ASVP board)
• Program Conference (i.e. listening to Simplex Conference)

Any combination of these flags can be enabled simultanously.

Always (sub-event 14)

This event is triggered on both incoming and outgoing calls.

Event Owner:	A station (normally a PA Interface)
Event type:	01 – Audio
Subevent:	14 (Always)
When change to ON:	- Simplex listen: - The other station pressing M-key, or - Release own M-key - Tones (connect- and disconnect-tones, private ringing etc) - Sending gong (this station makes a group call) - Voice message (ASVP)
When change to OFF:	When Simplex listen or the tones stop
When related to:	N/A

Additional notes:

• The station state must be Handset On or Volume/Handset Override

Incoming Calls (sub-event 12)

This event is triggered on incoming calls only

Event Owner:	A station (normally a PA Interface)
Event type:	01 – Audio
Subevent:	Incoming Calls (12)
When change to ON:	- Incoming Simplex listen: - The other station pressing M-key, or - Release own M-key - Tones (connect- and disconnect-tones, private ringing etc.)
When change to OFF:	When Simplex listen or the tones stop
When related to:	N/A

Additional notes:

• The station state must be Handset On or Volume/Handset Override
• The event is reported OFF (and stays OFF) if the user touches any key or the handset. This is called “take down” intended to transfer an incoming call from an external RCO-controlled speaker to the station’s internal speaker when the user touches any key or the handset.

Private Ringing (sub-event 08)

The event is triggered on incoming calls only

Event Owner:	A station
Event type:	01 – Audio
Subevent:	Private Ringing (08)
When change to ON:	Incoming private ringing tone
When change to OFF:	When the private ringing tone stops
When related to:	N/A

Additional notes:

• The station state must be Handset On or Volume/Handset Override
• This event is goes ON and OFF with the ringing signal, i.e. ON for 1,5 sec then OFF for 1,5 sec. The event goes OFF when private ringing stops.
• See also event "09 - Private Ringing Mode"

Voice Paging (Group Call) (sub-event 16)

This event is triggered when receiving group call audio. It is also triggered during the ding-dong signal.

Event Owner:	A station
Event type:	01 – Audio
Subevent:	Voice Paging (16)
When change to ON:	When receiving group call audio and ding-dong
When change to OFF:	When the group call audio is switched off
When related to:	N/A

Additional notes:

• The station state must be Handset On or Volume/Handset Override
• This event goes ON and OFF with the M-key of the announcer.

Audio Program/Alarm Distribution (sub-event 32)

This event is triggered when receiving audio from the audio program channel, or when receiving ASVP alarm message.

Event Owner:	A station
Event type:	01 – Audio
Subevent:	Audio Program/Alarm Distribution (32)
When change to ON:	When receiving audio from the audio program channel, or when receiving ASVP alarm message
When change to OFF:	When the audio is switched off
When related to:	N/A

Additional notes:

• The station state must be Handset On or Volume/Handset Override

Program Conference (sub-event 64)

This event is triggered when receiving audio from a Simplex conference, i.e. another station feeds the conference with audio (M-key pressed or Default Speaker). The event is often used for keying of radio transmitter when interfacing mobile radio systems.

Event Owner:	A station (normally a Mobile radio interface)
Event type:	01 – Audio
Subevent:	Program Conference (64)
When change to ON:	When receiving audio from a Simplex Conference
When change to OFF:	When the audio is switched off
When related to:	N/A

Additional notes:

• The station state must be Handset On or Volume/Handset Override