Receiving An Emergency Call; Stealth Emergency; Mdc-1200 (Analog Conventional Only); Normal Ptt Operation - L3Harris XL Extreme Series Operator's Manual

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14221-1800-2050, Rev. G

The radio goes through transmit and receive cycles if so configured. Speak into the

microphone while the radio is transmitting or press PTT to talk.

3. To exit emergency, power cycle the radio or select EXIT EMERGENCY from the CALL menu.

If enabled via programming, clear an emergency by pressing the button programmed for the

Monitor/Clear function and then the emergency button.

5.34.2 Receiving an Emergency Call

When receiving an Emergency Call, an alert tone sounds (if tones are enabled) and an emergency

indication is displayed. The unit ID and/or unit name of the unit in emergency is displayed. While

the emergency display is active, press PTT to respond to the emergency caller.

The radio can be programmed with the following emergency behavior:

No audio indications when declaring an emergency.

•

No visual indications when declaring an emergency.

No audio and no visual indications when declaring an emergency.

•

During stealth mode, the radio will not receive any type of call. Once the user presses the PTT

button, the radio display and audio return to normal.

MDC-1200 is a legacy in-band signaling protocol that provides the radio with the ability to transmit

and receive a unique PTT ID. This PTT ID can be decoded by receiving radios and displayed as

a hexadecimal number or an alias string. In addition, MDC-1200 provides radios with the ability

to transmit emergency status to a console. Refer to the MDC-1200 Feature Manual, 14221-7200-

6000, for instructions on configuring and using this feature.

If MDC signaling on PTT press is enabled using RPM2, the radio transmits an MDC PTT ID

message when PTT is pressed. If the Sidetone option is enabled using RPM2, the radio plays a

Ready-to-Talk (RTT) tone after the MDC pre-signaling has been transmitted.

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