User's Manual

Glossary
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similar networking device, then you must connect to an MDI port on the other
device. Pin-out assignments are shown in Appendix B.
Network Address Translation (NAT)
A standard that enables a local-area network (LAN) to use one set of IP addresses
for external traffic and a second set of addresses for internal traffic.
Network Time Protocol (NTP)
NTP provides the mechanisms to synchronize time across the network. The time
servers operate in a hierarchical-master-slave configuration in order to synchronize
local clocks within the subnet and to national time standards via wire or radio.
Password Authentication Protocol (PAP)
A basic form of authentication, in which a user’s name and password are transmitted
over a network and compared to a table of name-password pairs.
Ping
A utility used to determine whether a specific IP address is accessible. It works by
sending a packet to the specified address and waiting for a reply.
Plain Old Telephone Service (POTS)
One of the services using voice band. Sometimes used as a descriptor for all voice
band services.
Point-to-Point Protocol (PPP)
A protocol for connecting remote hosts to the Internet using TCP/IP.
PPP over Ethernet (PPPoE)
A protocol for connecting remote hosts to the Internet over an always-on connection
by simulating a dial-up connection.
PSTN
Public Switched Telephone Network.
Private Branch Exchange (PBX)
A telephone exchange local to a particular organization who use, rather than
provide, telephone services.
Quality of Service (QoS)
A network protocol used to specify a guaranteed throughput level. This protocol is
often used by Internet service providers to guarantee their customers a minimum
end-to-end latency.