Everlea EIV-Small Office, Руководство администратора

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EIV-Small Office —Administrator Manual
www.everlea.co.nz
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IP address A 32-bit number that identifies each sender or receiver of information that is sent
across the Internet. An IP address has two parts: an identifier of a particular
network on the Internet and an identifier of the particular device (which can be a
server or a workstation) within that network. A number used to identify the
location of a host device. It is expressed in numeric dot notation (e.g.
202.203.27.31).
MAC address
Media Access Control address (MAC address): It is a unique identifier assigned
to most network adapters or network interface cards by the manufacturer for
identification, and used in the Media Access Control protocol sub-layer. It may
also be known as an Ethernet Hardware Address or physical address. In TCP/IP
networks, the MAC address of a subnet interface can be queried with the IP
address using the Address Resolution Protocol (ARP) for Internet Protocol. On
broadcast networks, such as Ethernet, the MAC address uniquely identifies each
node and allows frames to be marked for specific hosts. It thus forms the basis of
most of the Link layer (OSI Layer 2) networking upon which upper layer protocols
rely to produce complex, functioning networks.
NAT Network Address Translation (NAT): A network capability that enables a houseful
of computers to dynamically share a single incoming IP address from a dial-up,
cable or xDSL connection. NAT takes the single incoming IP address and
creates new IP address for each client computer on the network.
Proxy server
Used in larger companies and organizations to improve network operations and
security, a proxy server is able to prevent direct communication between two or
more networks. The proxy server forwards allowable data requests to remote
servers and/or responds to data requests directly from stored remote server data.
PSTN Public Switched Telephone Network (PSTN): The worldwide voice telephone
network.
RJ-45 Standard connectors used in Ethernet networks. Even though they look very
similar to standard RJ-11 telephone connectors, RJ-45 connectors can have up
to eight wires, whereas telephone connectors have only four.
RTP/RTCP Real-Time Protocol/Real-Time Control Protocol (RTP/RTCP): IETF specifications
for audio and video signal management. Allows applications to synchronize and
spool audio and video information. RTP is specifically concerned with the
dependable transmission of latency-sensitive traffic across the network and is
involved in using time stamping to determine network jitter tolerance and makes
sure that voice packets are arriving in order.
SIP Session Initiation Protocol (SIP): A protocol that provides telephony services
similar to H.323, but is less complex and uses fewer resources. SIP is a signaling
protocol for Internet conferencing, telephony, presence, events notification and
instant messaging. SIP is a text-based protocol, similar to HTTP and SMTP, for
initiating interactive communication sessions between users.
Subnetwork or Subnet Found in larger networks, these smaller networks are used to simplify addressing
between numerous computers. Subnets connect to the central network through a
router, hub or gateway. Each individual wireless LAN will probably use the same
subnet for all the local computers it talks to.
TCP/IP Internet Standard Protocol: The underlying technology behind the Internet and
communications between computers in a network. The first part, TCP, is the
transport part, which matches the size of the messages on either end and
guarantees that the correct message has been received. The IP part is the user's
computer address on a network. Every computer in a TCP/IP network has its
own IP address that is either dynamically assigned at startup or permanently
assigned. All TCP/IP messages contain the address of the destination network
as well as the address of the destination station. This enables TCP/IP messages