Chapter 3: Operate the system
SB-Safety Voice 61
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SB-Safety Voice
Introduction
This section describes how to use the SB-Safety Voice service. The SB-
Safety Voice Service is an optional service, it is included in software version
4.00 and higher. The handling of calls with priority levels, preemption, visual
and audible annunciation using the SB-Safety Voice service is described.
The SB-Safety Voice service includes:
• Selecting the priority level of the call before placing an outgoing call
• Using external pre-programmed speed-dial numbers with priority level
• Handling the priority level for an active call
• Handling the priority level for an incoming call
• Annunciate the call status and SB-Safety Voice service availability
You can use the SB-Safety Voice service with a dialer or a common 2-wire
headset or handset with optional integrated dialer. An annunciator panel
shows the availability of SB-Safety Voice, incoming call, and the priority of
incoming and active calls. The following table shows the priority levels.
Priority Level
Application
Category
SATVOICE Call Examples
1
(highest) Safety of Flight
Distress and
Urgency
Inflight Emergency, Rapid
Emergency Descent, Urgent
Sidestep for Weather
2
Operational High (second
highest) Safety of Flight
Flight Safety Altitude Request, ATC
Clearance/Instruction
3
Operational Low (third
highest) Safety of Flight
Regularity of Flight,
Meteorological
Administrative
Air Traffic Information
Service, AOC, Redispatch,
Maintenance
Table 2: Priorities for SATVOICE calls (SB-Safety Voice)
a
a. Advisory Circular AC No.20-150B of U.S. Department of Transportation Federal
Aviation Administration
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