Tyco Electronics P5400 Group Calls in P25 Mode, Exiting Data Calls, Transmitting a Group Call

MM-012099-001, Rev. B

10.25.4Exiting Data Calls

Under normal conditions, the radio enters the scan lockout mode and returns to the control channel after completion of a data call (transmit or receive). If, during a data call, one of the following operations occurs, the data call is immediately terminated and the radio performs the desired function:

•If the PTT is activated.

•If an Emergency is declared by pressing the pre-programmed emergency button.

•If a group or system is changed.

10.25.5Scan Lockout Mode

Following the transmission or reception of a data call, if scan is enabled, scanning will stop temporarily. There are two independent pre-programmed times associated with this mode; one after a received data call and one after a transmitted data call. During this time the scan indicator will flash to indicate that scan is enabled but temporarily suspended. This condition typically returns to normal scan operation when the pre-programmed time expires; however, the following operations and conditions will terminate the scan lockout mode before the timeout has expired.

•Press the button.

•Press the PTT.

•Change a group or system.

•Enter Telephone Interconnect mode.

•Enter Individual call mode.

•Receive a new emergency assignment.

•Declare or clear an emergency.

•Receive an individual or phone call.

•Receive an Agency, Fleet, or System All Call.

•Press (P5450 model) or (P5470 model) to toggle Scan ON or OFF.

10.25.6Data Lockout Mode

During the voice call scan hang time (pre-programmed) the radio will not receive data calls.

10.26GROUP CALLS IN P25 MODE

10.26.1Transmitting a Group Call

1.Select the desired P25 system. (P25 icon will appear in display.)

2.Select the Talk Group/Conventional Channel. (Selected simultaneously using either the Voice Group Selection control knob or the group key.)

3.Press and hold the PTT.

4.When a grant tone is received (if enabled through programming) speak into the microphone.

5.Release PTT and wait for response.

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