JPS NXU-2A, Инструкция по установке и эксплуатации

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NXU-2A Operations Manual
Interoperability Now! 3-9
3.3.16 Command Port
The port used by the NXU-2A for receiving commands via the telnet protocol or from a WAIS
Controller. The value defaults to 23 and under normal circumstances should not need to be
changed. If necessary, the command port may be changed by using the CMDPORT command.
Type CMDPORT <port number> and press ENTER. The port number must range from 1 to
65535 and must be different than the VoIP port.
3.3.17 Input Level Boost +20db
The receive input level may optionally be boosted by +20db in order to accommodate low level
signal sources. Provisioning via the web interface allows selecting either “No Boost” or,
“Boost +20db” in the ‘RX Boost Mode’ field.
3.3.18 TX Delay
Additional delay may be provided to the transmit audio path. Via the web interface ‘TX Delay
(mS)’ field, the user may introduce up to 10 seconds of delay, in specified in 1 mS increments.
Upon editing the field with numeric data, the NXU-2A will round to the nearest 100mS
interval. When additional delay is used, the PTT\ signal will be asserted prior to the delayed
audio being presented, allowing LMR trunking systems to be accessed without audio loss.
3.3.19 RX Delay
Additional delay may be provided to the receive audio path. Via the web interface ‘RX Delay
(mS)’ field, the user may introduce from 0 to 10 seconds of delay, specified in 1 mS
increments. Upon editing the field with numeric data, the NXU-2A will round to the nearest
100mS interval. When additional delay is used, the received audio will be delayed before
being sent to the network.
3.3.20 VMR
Voice Modulation Recognition has been added to allow interfacing with radios which do not
provide a separate COR signal. VMR provides a more robust method of ‘COR Sensing’ than
VOX alone. VMR mode may be selected via the web interface ‘COR Sense’ field pulldown
menu. When VMR mode is chosen, the hardware COR signal is ignored, and audio content
with the appropriate speech characteristics is allowed to simulate the COR signal.
3.3.21 VOX and VMR Sensitivity Adjustments
When either VOX or VMR COR sensing is selected, three levels of sensitivity adjustments are
provided to allow greater flexibility. Via the web interface, “Low” sensitivity requires more
signal content to recognize and simulate COR activity. “High” sensitivity requires less signal
content to recognize and simulate COR activity. The default sensitivity is “Medium”.
3.3.22 Restoring Factory Defaults
The NXU-2A allows the user to restore the original factory default operating conditions. This
may be useful if the unit has been incorrectly configured, and it is necessary to return to a well-
defined state. To restore the factory default conditions, the power to the unit needs to be
removed and restored while rear panel switch “SW1” (
DEFAULTS ) is depressed. When the
front panel LED’s have blinked, the switch may be released, and the unit will be operational
using the JPS factory default parameters. The IP address will return to “
192.168.1.200
”, which
will allow web configuration. All other previously assigned user parameters will be lost during
this process.