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38 VoIP subscriber gateways
– Replication of multicast traffic – enable replication mode for multicast traffic. When this parameter
is selected, the following configuration will be available:
– Maximum count of errors – max count of transmission errors upon the exceeding of
which it is considered that the user out of network range. It is used to disable users
in the replication mode of multicast traffic;
– Show advanced settings – when checked, configuring the addition settings are available from the
following list:
– HT40+ – when checked, merge mode of two 20 MHz channels into 40 MHz channel
is enabled (the first channel is over the second, it operates only for 1-9 channels);
– HT40- – when checked , merge mode of two 20 MHz channels into 40 MHz channel
(the second is over the first, it operates only for 5-11 channels);
– LDPC support – when checked, support of coding with low-density parity-check
code is enabled;
– SMPS – Static – when checked, Spatial Multiplexing Power Save Static method is
available;
– SMPS – Dynamic – when checked, Spatial Multiplexing Power Save Dynamic
method is available;
– Green Field – when checked, compatibility with IEEE 802.11b/g;
– Delayed Block Ack – when checked, delayed data block acknowledgment mode is
enabled, otherwise immediate acknowledgment is used;
– Set A-MSDU to 7935 octets – when checked, max size of A-MSDU is 7935 bytes
otherwise it is 3839 bytes;
– DSSS/CCK mode (for 40 MHz) – when checked, DSSS/CCK modulation operation
mode is used;
– PSMP support – when checked, Power Save Multi-Poll will be used for down town;
– L-SIG TXOP support – when checked, L-SIG TXOP method of combined protection
for data transmission (802.11n) is used;
– STBC support at reception (1 stream) (RX-STBC1), STBC support at reception (up to 2
streams) (RX-STBC2), STBC support at reception (up to 3 streams) (RX-STBC123) –
when checked, signal reception with supporting STBC (space time block codes)
encryption is enabled;
– TX-STBC – when checked, data encryption is used to improve signal-to-noise ratio;
– Short guard interval (20 MHz) (SHORT-GI-20) – when checked, guard interval for 20
MHz operation mode is equal to 400 ns (data speed is up to 150 Mbps), otherwise-
800 ns (data speed is up to 130 Mbps);
– Short guard interval (40 MHz) (SHORT-GI-40) – when checked, guard interval for 40
MHz operation mode is equal to 400 ns (data speed is up to 300 Mbps), otherwise-
800 ns (data speed is up to 270 Mbps);
– Enable WMM – Wi-Fi Multimedia (WMM) operation mode setting. This operation
mode allows you to quickly and efficiently transmit audio- and video content
simultaneously with data transmission.
To save changes into the device operative memory click ‘Save changes’ button. To store settings into non-
volatile memory, click ‘Apply’ button.
3.1.2.4 DHCP-Server submenu
The submenu is available only for TAU-8.IP-W devices.
In the DHCP server submenu, you may configure a local DHCP server.
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses to the computers. DHCP
eliminates limitations associated with the manual TCP/IP protocol configuration.
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