Xentino XAIR A400N, Руководство пользователя, Страница: 79 / 80

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Xentino XAIR A400N User Manual
“focus differently”
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5.25 What is DDNS?
DDNS is the abbreviation of Dynamic Domain Name Server. It is designed for user owned the DNS
server with dynamic WAN IP address.
5.26 What is NTP Client?
NTP client is designed for fetching the current timestamp from internet via Network Time protocol.
User can specify time zone, NTP server IP address.
5.27 What is VPN?
VPN is the abbreviation of Virtual Private Network. It is designed for creating point-to point private link
via shared or public network.
5.28 What is IPSEC?
IPSEC is the abbreviation of IP Security. It is used to transferring data securely under VPN.
5.29 What is WLAN Block Relay between Clients?
An Infrastructure Basic Service Set is a BSS with a component called an Access Point (AP). The
access point provides a local relay function for the BSS. All stations in the BSS communicate with the
access point and no longer communicate directly. All frames are relayed between stations by the
access point.
This local relay function effectively doubles the range of the IBSS.
5.30 What is WMM?
WMM is based on a subset of the IEEE 802.11e WLAN QoS draft standard. WMM adds prioritized
capabilities to Wi-Fi networks and optimizes their performance when multiple concurring applications,
each with different latency and throughput requirements, compete for network resources. By using
WMM, end-user satisfaction is maintained in a wider variety of environments and traffic conditions.
WMM makes it possible for home network users and enterprise network managers to decide which
data streams are most important and assign them a higher traffic priority.
5.31 What is WLAN ACK TIMEOUT?
ACK frame has to receive ACK timeout frame. If remote does not receive in specified period, it will be
retransmitted.