TIPTEL 40 VoIP, Инструкция по установке и эксплуатации

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Appendix
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Appendix
Explanation of terms
ADSL Asymmetric Digital Subscriber Line. DSL connection with asymmetrical
bandwidth distribution for sending and receiving data.
DHCP Dynamic Host Configuration Protocol. DHCP servers assign a free IP
address to connected computers on start-up.
DNS Domain Name Server. The DNS translates IP addresses into names.
Downstream Data flow from the Internet.
DSL DSL stands for "Digital Subscriber Line", often also called T-DSL or ADSL.
A DSL modem uses your existing telephone lines to transfer data at high
speed.
Firewall Mechanism to protect your own data from the Internet.
IP Internet Protocol (TCP/IP = Transmission on Control Protocol/Internet
Protocol) for Internet data communication.
IP address IP stands for "Internet Protocol". An IP address contains four numbers
separated by dots and is used to identify an individual, distinct host
computer in the Internet. Example: 192.34.45.8.
LAN Local Area Network. Local network between computers for exchanging data
or joint use of drives or printers.
MAC address It is saved firmly on the card and is distinct across the world. This is a
unique serial number of a device or network card.
MBit/s Megabits per second. Measuring unit for data transfer rate (bandwidth) e.g.
in networks.
Extension The extension is the physical connection to which the analogue or ISDN
terminals are connected. An extension can be assigned to several
subscribers.
Network Connection of several computers and other communication devices with
the aim of allowing several users to access such common resources as
files, printers etc.
Port Input/output channel on a network computer on which TCP/IP is executed.
Various Internet applications require certain ports for communication.