The Graceful Service Degradation Mode (GSDM) provides best effort services when the radio enters a
weak signal situation. It provides limited services to users where data circuit operation is no longer
available in radio traffic mode.
The following services are available in GSDM:
• Call-Out message
• Short Data Service (SDS)
• Status message
3.6.1
Entering GSDM
A GSDM enabled radio enters GSDM automatically when a weak signal situation is detected.
The display shows the GSDM icon.
Entering GSDM will not interrupt ongoing services.
NOTICE: If the radio is in Call-Out protected mode, the radio remains in Call-Out protected
mode when entering GSDM.
3.6.2
Exiting GSDM
Your radio exits GSDM in the following conditions:
• Service aggradation – your radio detects improved signal strength.
NOTICE: If the radio is in Call-Out protected mode, the radio remains in Call-Out protected
mode when exiting GSDM.
• Catastrophic service degradation – your radio detects permanent service unavailability.
NOTICE: If the radio is in Call-Out protected mode, the radio leaves the Call-Out protected
mode when exiting GSDM.
The display drops the GSDM icon.
Exiting GSDM due to service aggradation will not interrupt ongoing services.
MN003460A01-AE
Chapter 3: Modes
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