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MM23772, Rev. F
103
3. When the radio receives a P25 call, the radio will unmute and the ID of the transmitting radio will
appear in the display.
4. Press the PTT button to respond.
5. Unanswered calls will appear in the Who Has Called (WHC) list.
10.20 EMERGENCY GROUP CALLS IN P25 MODE
There is no method available for a system-wide Emergency clear. An emergency group call
must be cleared on each individual radio.
10.20.1 Declare an Emergency Group Call
1. Select the desired P25 system and Talk Group/Channel.
2. Press the red emergency button on the top of the radio. The radio will broadcast a short emergency
transmission with the emergency bit set. “TXEMER” will appear in the display of the transmitting
radio.
3. While the PTT is NOT pressed, the mic will be open and the radio will broadcast an approximately 2
second transmission (e.g., background noise) which will be repeated at 10-30 second intervals.
4. Press the PTT to stop the short transmissions.
5. To send a voice message, press the PTT and speak into the microphone.
6. To clear an emergency from the transmitting radio, perform one of the following steps:
• Change systems.
• Change channels (if not prohibited by programming).
• Cycle power by turning radio off and then back on.
• Press the Clear and Emergency buttons simultaneously, providing the Clear Emergency option is
enabled in the Supervisory Options in the personality.
10.20.2 Receive an Emergency Group Call
1. Select the desired P25 System and Talk Group/Channel.
2. When the radio detects an incoming Emergency Group Call, the radio will sound an alert tone and
“RXEMER” will appear in the display.
3. Voice or emergency transmissions will be heard at the receiving radio.
4. To clear an emergency from the receiving radio, perform one of the following steps:
• Change systems.
• Change channels (if not prohibited by programming).
• Cycle power by turning radio off and then back on.
• Press the Clear and Emergency buttons simultaneously, providing the Clear Emergency option is
enabled in the Supervisory Options in the personality.