VOIP & IP Tel

מק"ט: #1135 | משך קורס: 40 שעות אק'
| מספר מפגשים: 5

In this course, you will cover the history and operation of the PSTN and VoIP. The history of telephony begins with the public switched telephone network (PSTN), which is the worldwide circuit-switched telephone network made up of public and private networks. Voice over IP (VoIP) is the latest telephone technology which is able to provide advanced services to both consumers and businesses at a reduced cost.You will explore the expansion of VoIP in the immediate future and the coming years.
 

לפרטים נוספים, מלא את פרטיך או התקשר 03-7100673
*שדות חובה
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קהל יעד

  • R & D and Marketing staff from companies supplying telecom equipment
  • Marketing and maintenance staff from service providers
  • Communications and plant managers of companies using telecom equipment and services
  • Communications consultants

מטרות

The students will study introduction to PSTN Telephony and VoIP, about Interworking between PSTN protocols and IP protocols (SIGTRAN) ,protocols IP: some versions H323, SIP, SIP-T, MGCP, MEGACO/H248, IP Telephony systems, design issues, security aspects and QOS.

תנאי קדם

Knowledge of Telephony network, PSTN, SS#7 and ISDN.and basic knowledge of data networks and TCP/IP

משך הקורס

משך הקורס הינו 40 שעות

נושאים

Networking recapitulation (separate frontal lecture on customer site)

  • Ethernet frame format
  • IP Architecture
  • Address scheme
  • Configuration
  • Utilities
  • Protocol format
  • ARP
  • ICMP
  • DHCP
  • DNS
  • TCP
  • UDP
  • Wireshark

VoIP Introduction

  • Introduction to telephony
  • PSTN architecture and functionality
  • Analog Line
  • E1 & PRI
  • SS#7

Codecs

  • Analog to digital voice
  • PCM G.711
  • Quality of voice, MOS
  • Compression G.723, G.726, G.729, etc.

IP telephony

  • Traditional telephony
  • Moving towards IP
  • Hardware saving - comparing tdm network with packet network
  • Traffic management and trunk forecasting
  • Circuit vs packet switched networks
  • Services and key terms (ip pbx/ pure IP, hybrid, enabled, centrex , softphone and more)
  • Architecture
  • Terminals
  • Gateways
  • Call Control Servers
  • Application Servers
  • Media Servers
  • Management devices
  • Work process highlights

Media transport

  • RTP
  • RTCP
  • cRTP
  • Hands on:
  • Wireshark practice with TCP/IP, DHCP, ARP, DNS, HTTP, etc.
  • Capture, analysis and playing of RTP session live traffic

SIP

  • SIP properties
  • Functional components
  • SIP message format
  • SIP requests
  • SIP responses
  • PSTN Cause Code and SIP Event Mappings
  • SIP transactions
  • SIP procedures
  • Address resolution
  • SDP
  • SIP extensions and enhancements
  • Call flows
  • Interworking
  • SIP design framework
  • Hands on:
  • Wireshark practice with SIP, SDP and correlation with RTP/RTCP live traffic
  • H.323
  • H.323 - overview (voice / video / data over ip)
  • H.323 - what does it do?
  • What is h.323?
  • Key benefits
  • H.323 component descriptions
  • H.323 components and building blocks
  • Endpoints, terminals
  • Gatekeeper properties and gateway properties
  • Mcu , mc , mp characteristics
  • H.323 zone
  • H.323 protocol descriptions
  • Call signaling models
  • Hands on:
  • Wireshark practice with H.323 captures

Industry perspective
WebRTC

  • Hands on:
  • Wireshark trace of WebRTC live traffic

SIGTRAN and SIP-T

  • SS#7
  • VoIP and SS#7
  • SCTP
  • SIGTRAN
  • SIP-T
  • Hands on:
  • Wireshark practive with SCTP, SIGTRAN and SIP-T captures

Gateways

  • Motivations
  • History
  • Architecture
  • Gateway Control Protocol Features
  • MGCP
  • Architecture
  • Connection Model
  • Commands
  • Protocol Issues
  • Packages
  • Example of Message Flows
  • Hands on:
  • Wireshark practice with MGCP captures
  • H.248/Megaco
  • Architecture
  • Connection Model
  • Commands
  • Protocol Issues
  • Packages
  • Example of Message Flows
  • Hands on:
  • Wireshark practice with MEGACO captures
  • Industry Perspective

QoS

  • What is QoS?
  • QoS over IP:
  • Static / predictive
  • Intserv / RSVP / MPLS / ATM
  • Diffserv
  • Hands on:
  • Wireshark practice with DHCP captures
  • QoS for VoIP
  • H.323
  • SIP

Network management and billing
Security

  • Security model
  • Threats
  • Telephony
  • IPTel
  • Application
  • Security strategies
  • IP Network
  • FW
  • NAT traversal (STUN, TURN, ICE)
  • Application
  • SBC
  • AAA - Authentication, Authorization, Accounting
  • LI - Lawful interception
  • Best practices

Presence

  • Hands on:
  • Wireshark practice with presence live traffic

SIP-IM

  • Hands on:
  • Wireshark practice with SIP-IM live traffic

Asterisk
Trends

  • NGN
  • FMC
  • 3GPP
  • IMS

 

תגיות