If a DSC transmission over Rescue-21 has no GPS position, should it receive an acknowledgement?

If a DSC transmission over Rescue-21 has no GPS position, should it receive an acknowledgement?

• A. Yes
• B. No
• C. Only if position is available
• D. Not applicable

Answer: (B)

Rescue-21 DSC acknowledgements depend on having GPS position data in the transmission so the system can route the alert and confirm delivery to the appropriate unit. If the DSC message lacks a GPS fix, the location context needed to process and acknowledge the call isn’t available, so the automatic acknowledgement isn’t generated. In other words, without position information, there isn’t a valid path for an acknowledgement to be sent, so the message does not receive one.

Rescue-21 DSC acknowledgements depend on having GPS position data in the transmission so the system can route the alert and confirm delivery to the appropriate unit. If the DSC message lacks a GPS fix, the location context needed to process and acknowledge the call isn’t available, so the automatic acknowledgement isn’t generated. In other words, without position information, there isn’t a valid path for an acknowledgement to be sent, so the message does not receive one.