Proyecto Final

PROYECTO FINAL DE CARRERA

TÍTULO DEL PFC: Estudio de viabilidad telefonía IP en red

inalámbrica UPC

TITULACIÓN: Ingeniería Superior de Telecomunicaciones

AUTOR: Cristina Jerez Álvarez

DIRECTOR: Josep Paradells Aspas

Glosario

ACK Acknowledgment

ADSL Asymmetric Digital Subscriber Line

AP Access Point

ASCII American Standard Code for Information Interchange

ASK Amplitude Shift Keying

BBDD Base de Datos

BPSK Binary Phase Shift Keying

CDMA Code Division Multiple Access

DC Direct Current (0 Hz)

DNS Domain Name System

DSSS Direct Sequence Spread Spectrum

DVB Digital Video Broadcasting

EAP Extensible Authentication Protocol

ETSI European Telecomunication Standard Institute

FDM Frequency Division Multiplexing

FM Frequency Modulation

FSK Frequency Shift Keying

GHz Gigahertz

GMSK Gaussian Minimum Shift Keying

GSM Global System for Mobile communications

Hz Hertz

HTTP HyperText Transfer Protocol

ICI Inter-Carrier Interference

ID Identification

IEEE Institute of Electrical and Electronic Engineers

IFFT Inverse Fast Fourier Transform

IMPP Instant Messaging and Presence Protocol

IP Internet Protocol

IPSec Internet Protocol Security

2

ISDN Integrated Services Digital Network

ISM Industrial Scientific Medical

ITU International Telecomunication Union

kbps Kilo bits per second

kHz Kilohertz

LDAP Lightweight Directory Access Protocol

m Metro

MAC Medium Access Control

Mbps Mega bits per second

MCU Multipoint Control Unit

MIME Multipurpose Internet Mail Extensions

MHz Megahertz

MGC Media Gateway Control

MMCC Multimedia Conference Control

MOS Mean Opinion Score

OFDM Orthogonal Frequency Division Multiplexing

PAE Port Access Entity

PAP Password Authentication Protocol

PBX Private Branch Exchange

PC Point Coordinator

PCM Pulse Code Modulation

PHY Physical Layer

PPP Point to Point Procotol

PSK Phase Shift Keying

PSTN Public Switched Telephone Network

QAM Quadrature Amplitude Modulation

QoS Quality Of Service

RF Radio Frequency

RFC Request for Comments

RSN Robust Security Network

RSNA Robust Security Network Association

RSVP ReSerVation Protocol

3

RTP Real-time Transport Protocol

RTCP Real-time Control Protocol

SCIP Simple Conference Invitation Protocol

SCP Service Control Point

SCTP Stream Control Transmission Protocol

SDP Session Description Protocol

SIMPLE SIP for Instant Messaging and Presence Leveraging Extensions

SIP Session Initiation Protocol

SMTP Simple Mail Transport Protocol

SSID Sevice Set ID

SSP Service Switching Point

STD Standard

TCP Transmission Control Protocol

TERENEA Trans-European Research and Education Networking Association

TKIP Temporal Key Integrity Protocol

TLS Transport Layer Security

TSN Transitional Security Network

TV Television

UA User Agent

UAC User Agent Client

UAS User Agent Server

UDP User Datagram Protocol

URI Universal Resource Identifier

URL Uniform Resource Locator

VoIP Voice over IP

XSF Xarxa Sense Fils (Red sin Hilos)

WPA WiFi Protected Access

WEP Wired Equivalent Protocol

WiFi Wireless Fidelity

WLAN Wireless Local Area Network

WRAP Wireless Router Application Platform

4

Índice

Glosario ........................................................................................................................ 2

Introducción ................................................................................................................. 7

Capítulo 1 ................................................................................................................... 10

1. Problemática existente........................................................................................ 10

1.1. Planteamiento del problema ............................................................................... 10

1.2. Justificación......................................................................................................... 12

1.3. Objetivos ............................................................................................................. 13

1.3.1. Objetivo General ........................................................................................... 13

1.3.2. Objetivos específicos .................................................................................... 13

Capítulo 2 ................................................................................................................... 15

2. Conceptos generales sobre VoIP ......................................................................... 15

2.1. Voz sobre IP (VoIP) .............................................................................................. 15

2.1.1. ¿Qué es Voz sobre IP? ................................................................................... 17

2.1.2. Elementos de red .......................................................................................... 18

2.1.3. Protocolos de VoIP ........................................................................................ 20

2.2. Arquitectura Multimedia de Internet .................................................................. 20

2.2.1. RTP (Real Time Protocol) ............................................................................... 23

2.2.2. RTCP (Real Time Control Protocol) ................................................................ 26

2.2.3. SDP (Session Description Protocol) ............................................................... 26

2.3. SIP (Session Initiation Protocol) ........................................................................... 27

2.3.1. Descripción del protocolo ............................................................................. 27

2.3.2. Agentes SIP ................................................................................................... 31

2.3.3. Protocolo de funcionamiento........................................................................ 33

Capítulo 3 ...................................................................................................................

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