MM-013994-001, Rev. J
87
• 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 (P7350 model) or (P7370 model) to toggle Scan ON or OFF.
10.30.6 Data Lockout Mode
During the voice call scan hang time (pre-programmed) the radio does not receive data calls.
10.31 TYPE 99 OPERATION (ANALOG CONVENTIONAL)
Type 99 is a conventional in-band, two-tone sequential signaling method. This conventional signaling
protocol controls the muting and unmuting of a radio. Type 99 encoded base stations, mobiles, or
portables can selectively call individual units or groups of units in a conventional system. Type 99 is
used in paging operations providing a dispatcher with the ability to selectively call a radio or a group of
radios. If Type 99 is enabled in the radio personality, the radio can decode Individual, Group, and
Supergroup Type 99 calls.
In a selective signaling environment, the P7300 portable radios operate in one of two states, Monitor
mode or Selective Call mode.
• In Monitor mode, Type 99 “OFF,” the decoder is disabled and all calls are heard by the user.
• In Selective Call mode, Type 99 “ON,” the decoder is enabled and only calls intended for the user
will be heard.
10.31.1 Type 99 with or without Channel Guard
Selective signaling operates with or without Channel Guard. If Channel Guard is enabled, the radio can
be programmed with an "And" or an "Or" option, determined by programming with T99 Mute Control.
• If the "And" option is programmed, T99 calls require the correct selective signaling (T99 tone
sequence) AND the correct Channel Guard tones are heard by the user.
• If the "Or" option is programmed, calls with the correct Channel Guard tones OR calls with the
correct T99 tone sequence and Channel Guard tones are heard by the user.
A radio operating in Selective Call mode that receives a selective call switches to the Monitor mode (after
decoding the T99 call) and the TX/RX LED flashes green. The TX/RX LED indicates whether the
channel has a carrier signal.
10.31.2 Resetting Type 99 after a Call
After decoding a Type 99 call, the radio operates in Monitor mode and all traffic on the channel is
audible. If the channel has Channel Guard, only the traffic with the radio's Channel Guard tone will be
heard.
To reset Type 99 operation, use one of the following methods:
• Press the button.
• Press the button, if enabled through programming to toggle Type 99 ON/OFF.
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