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1810 VoIP Gateway User’s Guide
Appendix A: GLOSSARY
Default: The value assigned to a configuration parameter when the gateway is first powered on.
DHCP: Dynamic Host Configuration Protocol. A TCP/IP protocol that lets a network connected to the
Internet automatically assign a temporary IP address to a host when the host connects to the
network.
Ethernet address: Another name for MAC address.
Ethernet: A standard protocol (IEEE 802.3) for a 10-Mbps baseband local area network (PAT) bus
that supports high-speed communication among systems. It operates at the Physical Layer of
the OSI Model.
gateway: A communications device that connects two different networks.
IP address:
Internet Protocol address. The address assigned to an Internet host.
ISP: Internet Service Provider. An organization that provides access to the Internet.
network address: The network portion of an IP address.
ping: An echo request sent to check the accessibility of a device.
PPPoE: Point-to-Point Protocol over Ethernet. A method for establishing sessions and encapsulating
PPP packets over an Ethernet, specified by RFC 2516.
protocol: A set of rules that govern the transmission of data between interconnected devices to
maintain or improve communication.
PSTN: Public Switched Telephone Network. The standard telephone network.
remote host: A host connected to, and distinguished from, the local host.
RJ11: A 6-position jack used with dial networks and telephone sets.
RJ45: An 8-position jack used with programmable dial networks.
server: Hardware or software that offers a specific service, such as database management, to a client.
subnet address: The subnet portion of an IP address.
subnet mask: A number that identifies the subnet portion of a network address, so that IP addresses
can be shared on a local area network.
subnet: An addressable independent network segment.
xDSL: A generic term for all varieties of DSL.
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