Limited Patience Timer (Polite Emergency)
When selecting this option, you will be prompted for a value between 1 and 255 seconds. In
between Polite Emergency data pack transmissions, the radio will wait this length of time for the
channel to become free. If this timer expires, the Emergency packet is sent out, whether or not
the channel is free.
If this option is not selected, the timer will be set to 0 providing “Infinite Patience”.
Remote Monitor
Selecting this option allows the dispatcher to activate the transmit audio circuitry of the radio and
monitor audio activity around the radio. Upon receiving a remote monitor command, the radio will
key up the transmitter, acknowledge the command, set the PTT unit ID, and activate the
microphone. If a second microphone is attached, its audio will be transmitted instead. The
transmission will last for the time specified in the argument of the remote monitor command. After
the transmission time, the radio dekeys and returns to normal operation.
If the radio is inhibited, transmission following the receipt of a Remote Monitor command will
always be silent.
If the radio is processing normal Remote Monitor and the silent bit in the Remote Monitor
command is set, the radio will operate silent, without turning the red LED on for transmission and
without issuing side tones. Otherwise, sidetones and LED operation will go on just as if the user
had pressed the PTT.
If Emergency is enabled and activated while normal Remote Monitor transmission is taking
place, the Remote Monitor transmission will be canceled and the radio will enter the normal
Emergency Cycle.
Call Alert
Call Alert is a type of paging function initiated by the dispatcher to get the attention of a radio that
is not responding to normal activity. Upon receiving the Call Alert from the dispatcher, the target
radio will sound a series of Alert tones and display a flashing visual indicator.
MDC Alert Tones
When the MDC Alert Tone option is enabled, incoming MDC Selective Calls are preceded by a
series of audible Alert Tones in order to alert the user. The Alert Tones are followed by the voice
message. If this option is not selected, no Alert Tones will sound. Only the voice message will be
heard.
MDC Individual Selective Call
Selective Call elminates the annoyance of users having to listen to traffic that has nothing to do
with them. Sel Cal is used to “set up” the call with the receiving unit, and to allow announcement
type messages to an individual or group units.
Individual Selective Call allows each radio equipped with a decoder to examine the MDC data
packet and respond only to calls addressed to them by alerting the user and automatically
unmuting the speaker audio. After the transmission is complete, the radio automatically returns to
the muted standby state. Users may not respond directly to a Selective Call.
Emergency Acknowledge Retry Timer
Upon selecting this option, you will be prompted to enter a value between 0 and 15 seconds.
This value specifies the amount of time that the radio will wait before sending another
Emergency data packet when an acknowledgment has not been received from a previous data
packet transmission.
Appendix - 5. Options List and Definitions 83