4: Using the Web Interface
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Verint Video Intelligence Solutions
4. In the MAC Role list, select the function of the device in the wireless system. The
required value for an S4200 is Slave. The available values are:
Master—A device that controls the access over the wireless medium. It takes care
of channel selection and slave authentication to provide access to the wireless
medium. The master also allocates bandwidth for all connected slaves.
Slave—A device that needs a master to access the wireless medium to transfer
data. A slave can also bridge data.
5. In the RF Band list, select the radio frequency band used by the device. The available
values are:
802.11a (5 GHz OFDM)
802.11g (2.4 GHz OFDM)
Public Safety (4.9 GHz OFDM)
6. In the Channel list, select the frequency channel, within the selected band, that the
wireless system will use. It is the master device of the S4200 that selects the channel.
However, you can specify an initial value for the roaming process by which the S4200
will find its access point; be aware that this initial channel may not be the one used by
the access point.
In a 4.9 GHz band context, the list of channels varies depending on the chosen
bandwidth.
7. In the Channel Bandwidth list, select the width of the frequency channel when the
4.9 GHz public safety band is selected. This parameter only appears for the 4.9 GHz RF
band. The values can be 5 MHz, 10 MHz, and 20 MHz (default).
8. In the Tx Bit Rate list, select the data rate at which the device operates. A high bit rate
reduces the effective distance between two functional devices. You can set the bit rate
in slave devices only.
When a slave connects to its master for the first time, it automatically receives the best
possible value (the Auto value), with a default RF margin set to 15 dB (to change the
margin, see page 75).
Note: A change to the MAC role is automatically applied because it has an immediate
impact on other parameters. However, this change will take effect in the device
only after you save the parameter and reboot the S4200.
Note: A change to the RF band is automatically applied because it has an immediate
impact on other parameters. However, this change will take effect in the device
only after you save the parameter and reboot the S4200.
Note: A change to the channel bandwidth is automatically applied because it has an
immediate impact on other parameters. However, this change will take effect in
the device only after you save the parameter and reboot the S4200.
