User's Manual

SDP660 – USER MANUAL TNM-U-E-0114

Jun 15 (Iss. 1.4) Page 32 BASIC OPERATIONS

5.11 EMERGENCY ALARM

5.11.1 Making an Emergency Call

When the emergency key is pressed and held for a time determined by the FPP, the radio will

change to emergency mode. Under emergency mode, the radio can operate in three FPP

configurable modes:

 Frozen. The screen will freeze in the state it was in before the emergency mode

became active. In addition, the Emergency mode icon will be displayed.

 Blank. The screen will blank giving no indication to others that the radio is in emergency

mode.

When emergency mode is triggered, the radio can be configured by the FPP to transmit and

receive on a cyclic basis with FPP programmed time periods.

During Tx, the radio will generate an emergency broadcast call on either the currently selected

channel or an FPP nominated channel.

Others may listen to the automatic transmissions to hear conversations near the radio.

The power button is not operable in emergency alarm mode.

The radio can be programmed to either remain in emergency alarm mode or to exit emergency

alarm mode when the number of programmed cycles is completed. To terminate the emergency

alarm mode, the battery must be disconnected and re-connected.

5.12 DUPLEX OPERATION

Duplex mode allows telephony calls to be made where users can simultaneously talk and hear the

other party, without the need to PTT during transmissions. During operation, the audio is routed

through the portables earpiece (located directly above the display).

To activate duplex functionality, this mode must be enabled in both the infrastructure and the

terminal, and is applicable only to Tier III (Trunking) systems.

5.12.1 Setup – Infrastructure

In SDMT, on the Subscribers configuration page, ensure that the ‘Mode’ for the relevant Portable

radio ID is set to ‘Duplex Mode’.

5.12.2 Setup – SDP660

In the FPP, on the Systems branch of the navigation tree, ensure that the ‘Outgoing Telephony

Calls are Duplex’ checkbox is selected. See Figure 11 below.

Figure 11. Duplex Setup in FPP.