Appendix
HUAWEI HG655a Home Gateway
User Guide
8-4
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
NAPT
Network Address Port Translation
NAPT enables a LAN to use one set of IP addresses for internal traffic and a second set
of addresses for external traffic.
PPPoE
Point-to-Point Protocol over Ethernet
PPPoE is a network protocol for encapsulating PPP frames in Ethernet frames. It is used
mainly with DSL services. It offers standard PPP features such as authentication,
encryption, and compression.
Protocol
On the Internet, "protocol" usually refers to a set of rules that define an exact format for
communication between systems.
PSTN
Public Switched Telephone Network
Refers generally to the variety of telephone networks and services in place worldwide
and is sometimes called POTS.
In United States, PSTN refers to the entire interconnected collection of local, long
distance and international phone companies, which could be thousands.
Server
A computer or program that responds to commands from a client. For example, a file
server may contain an archive of data or program files. When a client submits a request
for a file, the server transfers a copy of the file to the client.
Subnet mask
The technique used by the IP protocol to determine the network segment to which
packets are sent. The subnet mask is a binary pattern that is stored in the client machine,
server or router, and is matched with the IP address.
TCP
Transmission Control Protocol
A reliable transport protocol within the TCP/IP protocol suite. TCP ensures that all data
reaches the other end accurately and data is 100% intact. TCP's unreliable counterpart is
UDP, which is used for streaming media, VoIP and videoconferencing.
