Telex IP-223 - Manual (Page 80)

Setup Information
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Select one of the following operating modes for the monitor relay:
Reset with PTT – When selected, the monitor relay is closed from the time the monitor tone sequence is received
until the next PTT operation.
On except PTT – When selected, the monitor relay is latched at all times except when PTT is active, whether the
monitor function tone is received or not.
Timed – When selected, enter the amount of time, in ms, the monitor relay is latched.
If an Options field cannot be selected, the particular option is not available for the line number to which the details on the
window apply.
Full Duplex Check Box
The Full Duplex check box indicates whether or not full duplex Ethernet is supported. If selected, full duplex (TX and RX
transmission) audio packets are allowed.
RxAGC Check Box
The RxAGC (Automatic Gain Control) check box indicates whether or not the radio RX audio includes an AGC. If selected,
an AGC step is added to the radio RX audio. This results in the transmission of a more consistent radio RX audio by increasing
the level of low audio and decreasing the level of loud audio.
Hi-Pass RX Check Box
The Hi-Pass RX check box indicates whether or not RX audio below 300Hz is blocked. If selected, RX audio below 300Hz is
blocked.
Pre-Emphasize TX Check Box
The Pre-Emphasize TX check box indicates whether or not TX audio includes a standard 6dB octave pre-emphasis. If
selected, a standard 6dB octave pre-emphasis is included in the TX audio.
F1 Last Call Check Box (iDEN Mode only)
The F1 Last Call check box indicates whether or not the last call is reserved for the F1 button. If selected, function tone 1 is
reserved for the last call. This allows the console operator to call back the last call received.
PTT Notch Filter Check Box
The PTT Notch Filter checkbox, when selected, indicates the 2175Hz notch filter is bypassed. When selected, 2175Hz
±180Hz frequency range is ignored during PTT. Use this option when 2175Hz is blocking desirable audio.
Busy Channel Lockout Check Box
The Busy Channel Lockout check box indicates outgoing FleetSync messages are placed in queue until the radio is idle.
FleetSync messages can be lost when sent on half-duplex radios. Selecting this check box avoids lost messages.
The PTT Setup section allows a secondary external function to be controlled with a separate relay closure at the same time as
the PTT relay. Select one of the following:
PTT relay only – When selected, only the PTT relay is closed. (Default Setting)
Options
PTT Setup