Telex IP-223 - Manual (Page 86)

Setup Information
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LAM Level Field
The LAM Level field identifies the threshold, in dB, at which the radio/line un-mutes and sends RX packets to the Ethernet.
The range for this field is -50 to +10dB.
LAM Time Field
The LAM Time field identifies the amount of time, in seconds, the console continues to play audio when receiving audio
above the LAM threshold specified in the LAM Level field. This entry is also used by the Ethernet to determine how long to
send audio.
The range for this field is 0 to 60 sec.
The Monitor Relay field provides the IP-223 the ability to decode a valid Ethernet packet and provide a relay-contact output
to turn off the sub-audible-tone-decoder circuit in the radio receiver. This allows the console operator to monitor the line for
other users before transmission (required by FCC regulations on stations equipped with CTCSS). 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 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.
LAM Setup
Monitor Relay
Options