BR/Console Properties Tab for MLC 8000 Subsite Link Converter Configuration in IP Simulcast Systems
This section provides information about the fields on the base radio Properties Tab for MLC 8000 Subsite Link Converters. The information provided includes the field name, default value, range of values, and description.
In the following table, all fields are editable unless a note in the description column indicates otherwise.
| Field | Default Value | Range of Values | Description |
|---|---|---|---|
| Port ID | Not applicable | 00001 to 65535 | Provides a unique identifier given to each port of the MLC 8000 Subsite Link Converter (and unique across the system). The Port ID is used as the RPDFL ID in the RPDFL packets to and from this MLC 8000 Subsite Link Converter port. One port of the MLC 8000 Subsite Link Converter serves one base radio and thus, each base radio in the MMC channel cluster holds a unique identification number that it gets when connected to the MLC 8000 Subsite Link Converter port.
NoteYou cannot edit this field.
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| BR Name | Blank | 0 to 32 alphanumeric characters | Specifies the base radio name. This name is written in the MLC 8000 Configuration Tool main screen and at the Control & Display window. |
| Link Type | 4 Wire External PTT (IP-SIM) | 4 Wire External PTT (IP-SIM) | Specifies the type of the resource connected to the selected analog port.
NoteYou cannot edit this field.
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| BR Location | 1 | Prime Site, Subsite ID 1 to 64 | Specifies the number and name of the Subsite in which the attached base radio is located.
NoteThe device holds the subsite number and retrieves the subsite name from the subsite list. If the subsite required is not already in the list, the Add Subsite option in this field can be used to add it so that it can then be assigned. If you modify this field, the MLC 8000 Subsite Link Converter is restarted to implement the change.
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| Port # | 4 | 4 | Specifies the port on which to do advanced configuration.
NoteYou cannot edit this field.
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| Analog Voice Console Hangtime (sec) | 0.0 seconds | 0.0 to 15.0 in 0.1 second increments | Specifies the amount of time the base radio remains keyed and transmitting silence at the end of the analog voice from the attached TRC analog console. The period of silence is pre-emptible by any outbound or inbound signal. |
| Analog Voice Repeat Hangtime (sec) | 5.0 seconds | 0.0 to 15.0 in 0.1 second increments | Specifies the amount of time in which the base radio remains keyed and transmitting silence at the end of the repeat voice from the attached analog base radio receiver. The period of silence is pre-emptible by any outbound or inbound signal. |
| Channel Name | Blank | 0 to 31 characters | Specifies the channel name. The channel name is the same as the name specified on the Voting Properties tab of the analog comparator.
NoteYou cannot edit this field.
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| Channel Number | Blank | Specifies the channel number.
NoteYou cannot edit this field.
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| Voter-ID | Blank | 00001 to 65535 | Specifies the Voter ID of the MLC 8000 Analog Comparator to which this MLC 8000 Subsite Link Converter port is associated. A blank field indicates that the MLC 8000 Subsite Link Converter port is unassigned to any channel (voter/MLC 8000 Analog Comparator).
NoteYou cannot edit this field.
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| Advanced Configuration Fields — Main Tab | |||
| Voice Detection Mode | Status Tone | Status Tone | Specifies voice detection mode. The MLC 8000 Subsite Link Converter input port detects the status tone from the base radio. While the tone exists, the MLC 8000 Subsite Link Converter declares the receive state of the base radio as “Idle”. If the base radio status tone is stopped, the MLC 8000 Subsite Link Converter declares the receive state of the base radio as “Receive” (unless there is no audio and no status tone in which case the MLC 8000 Subsite Link Converter determines the base radio as failed).
NoteYou cannot edit this field.
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| Status Tone Timeout (sec) | 60 seconds | 3 to 65535 seconds | Specifies status tone timeout. If the status tone has not been detected at the MLC 8000 Subsite Link Converter radio port input for the duration specified in this field, the MLC 8000 Subsite Link Converter marks this radio port as “failed”. This “failed” mark stays intact until the status tone is observed in the MLC 8000 Subsite Link Converter analog input port. |
| Status Tone Frequency (Hz) | 2175 Hz | 2100, 2175, or 2325 Hz | Sets the incoming signal frequency that when received, the attached base radio is declared as “In Receive State”.
NoteIf you modify this field, the MLC 8000 Subsite Link Converter is restarted to implement the new parameter value.
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| Input Level Differential (dB) | -8.6 dB | -20 dB to +3 dB | Represents the difference between the status tone level measured on the base radio and peak analog voice input signal level. For GTR 8000s, this difference is displayed on the Rx Wireline Alignment window.
NoteInput Level Differential = Status Tone/ALMT Level Below Peak Audio + 4.4, where peak audio is at 100% deviation.
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| Analog Line Transient Time (msec) | 20 msec | 5 to 10000 msec | Used to ensure that any transient on a port during the initial portion of the call inbound is excluded from the SQM Measurement. The line transient settle time should be set to the time period from the point that “start receive from BR” state is declared (for example, Loss of status tone or “E” I/O signal have been received) until the transient is settled on the incoming voice signal. SQM may be measured after the timer has expired. This timer is the highest priority timer in the SQM measurement. It specifies the time to wait after transitioning to analog, before beginning the SQM measurement. Note that this parameter is related to the noise that exists before audio signal is discovered at the port.
NoteIf you modify this field, the MLC 8000 Subsite Link Converter is restarted to implement the new parameter value.
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| Simulcast Launch Time Offset (microseconds) | 0 micro seconds | 000 to 990 | Specifies the delay that should be added to the transmission in simulcast systems to adjust coverage in the overlapped areas.
NoteSome values cause a restart of the device. These values are: 124, 249, 374,499,624,749, and 874. The constraint to use the subsequent value for launch time offset (difference in one micro second) does not harm audio quality. The MLC 8000 Configuration Tool blocks configuring these values and displays a message similar to the following to the user:
Invalid Simulcast Launch Time Offset value entered! Offsets 124,249,374,499,624,749, and 874 microseconds are not allowed and will be replaced with the subsequent value.
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