1 Overview

1.1 Abbreviations used within this unit

While reading this subject you may come across the following abbreviations.

AAL – ATM adaptation layer

API – application program interface

ARP – address resolution protocol

ATM – asynchronous transfer mode

B-ISDN – broadband ISDN

CLP – cell loss priority

DNS – domain name system

FTP – file transfer protocol

HTTP – hypertext transfer protocol

IANA – Internet Assigned Numbers Authority

ICT – information and communication technology

IEEE – Institute of Electrical and Electronics Engineers

IETF – Internet Engineering Task Force

IP – internet protocol

IPv4 – internet protocol version 4

ISDN – integrated services digital network

ISO – International Organization for Standardization

ISP – Internet service provider

ITU-T – International Telecommunication Union – Telecommunication Standardization Sector

LAN – local area network

OSI – open systems interconnection

POTS – plain old telephone service

PPP – point-to-point protocol

RFC – request for comments

RTP – real-time transport protocol

SAP – service access point

SDH – synchronous digital hierarchy

TCP – transmission control protocol

UDP – user datagram protocol

URL – uniform resource locator

WWW – world wide web