User Manual

20
SELECTIVE SIGNALING
Selective signaling controls the muting and unmuting of the receive
audio. This allows a user or dispatcher to selectively call an
individual radio or group of radios. The P
ANTHER
300M mobile radio
supports selective signaling in Type 99 decode format.
In a selective signaling environment, the P
ANTHER
300M mobile radio
operates in one of two states, Monitor mode or Selective Call mode.
In the Monitor mode, the decoder is disabled and all calls are heard
by the user.
In the Selective Call mode, the decoder is enabled and only calls
intended for the user will be heard.
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.
If the "And" option is programmed, only calls with the correct
selective signaling
AND
correct Channel Guard tones are heard by
the user.
If the "Or" option is programmed, calls with the correct Channel
Guard
OR
calls with the correct selective signaling 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 and the
TX/RX LED
flashes green.
The
TX/RX LED
indicates whether the channel has a carrier signal.
The following graphic depicts the flashing pattern of the
TX/RX LED
.
Monitor mode Without Carrier On
Off
Monitor mode With Carrier On
Off
TYPE 99 OPERATION
Type 99 is Com-Net Ericsson’s proprietary method for in-band, two-
tone sequential signaling. Type 99 is a conventional signaling