Practical Voice and Video over IP Training Course

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Duration Duration

21 hours (usually 3 days including breaks)

Requirements Requirements

It is assumed the delegates will have a working knowledge of TCP/IP.

Overview Overview

A 3 day practical course covering the fundamentals of the various voice protocols used to carry voice (and video) over a packet switched network. This course is a mixture of theory and practice (utilising Wireshark where appropriate for explanation and troubleshooting) with practical VoIP configured using IP telephones, softphones and voice capable Cisco routers. This is primarily a ‘generic’ VoIP course – but uses Cisco equipment to provide an IP backbone and voice gateways. We can also provide Cisco specific voice training courses. The course also covers call setup between circuit switched and packet switched networks.

The course is approximately 40% practical.

Course Outline Course Outline

Objectives:

  • Explain the operation of circuit switched networks.
  • Contrast the differences between circuit switched and packet switched networks.
  • Explain the fields and flags within the IP header – including the new DSCP field.
  • Explain and quantify the need for voice compression and delay in an IP network.
  • Identify the CODEC’s used in voice and video compression – e.g. G711, G729 and H261/3/4.
  • Identify and explain the fields of the Real Time Transport Protocol and Real Time Control Protocol – including carrying DTMF tones.
  • Calculate bandwidth requirements for various voice compression algorithms.
  • Explain and demonstrate the need for security and encryption within VoIP.
  • Describe and explain the H.323 protocol stack.
  • Describe and explain call setup and signalling (H.225).
  • Describe and explain H.245, fast start and tunnelling of H245.
  • Describe and explain SIP call setup.
  • Describe and explain SIP Servers.
  • Describe and explain SDP.
  • Describe and explain Soft Switching – including MGCP and H248.
  • Describe and explain the use of SCTP in backhauling signalling messages.
  • Describe and explain the importance of network delay and the need for QoS in the network.
  • Describe and explain the differences between reservation and prioritisation QoS in an IP Network.
  • Describe the use of IntServ and RSVP in QoS.
  • Describe the use of TOS and DiffServ in QoS.
  • Describe and explain the need for multiple queues and intelligent scheduling of packets at router/switch interfaces.
  • Describe the use of MPLS to deliver QoS in the WAN environment.
  • Describe the use of VLAN’s to deliver QoS in the LAN environment.

Practical Exercises:

  • Lab Exercise 1: Practical VoIP in the LAN.
  • Lab Exercise 2: Build IP network, make calls and examine RTP packets using Wireshark.
  • Lab Exercise 3: Make calls and examine SIP Packets using Wireshark.
  • Lab Exercise 4: Make calls and examine H323 Packets using Wireshark.
  • Lab Exercise 5: Calls between PSTN and IP Networks.
  • Lab Exercise 6: Configure QoS and make calls to examine effects.
  • Lab Exercise 7: Security and VoIP.

Equipment used in Practical Sessions:

  • Cisco 2600 series and 2800 series voice capable routers and Cisco ASA 5505 Firewalls. IP Telephones, softphones and analogue telephones as required. SIP client and server software as required.

Bookings, Prices and Enquiries

Guaranteed to run even with a single delegate!
Public Classroom Public Classroom
From 5194PLN
(21)
Public Classroom
Participants from multiple organisations. Topics usually cannot be customised
Private Classroom
Participants are from one organisation only. No external participants are allowed. Usually customised to a specific group, course topics are agreed between the client and the trainer.
Private Remote
The instructor and the participants are in two different physical locations and communicate via the Internet. More Information

The more delegates, the greater the savings per delegate. Table reflects price per delegate and is used for illustration purposes only, actual prices may differ.

Number of Delegates Public Classroom Private Remote
1 5194PLN 15160PLN
2 4252PLN 9235PLN
3 3938PLN 7260PLN
4 3781PLN 6273PLN
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Lublin, ul. Spadochroniarzy 9Mon, 2017-10-09 09:0015160PLN / 5344PLN
Rzeszów, Plac Wolności 13Mon, 2017-10-09 09:0015160PLN / 5194PLN
Opole, Wladyslawa Reymonta 29Tue, 2017-10-10 09:0015160PLN / 5944PLN
Toruń, ul. Żeglarska 10/14Wed, 2017-10-11 09:0015160PLN / 5494PLN
Katowice ul. Opolska 22Wed, 2017-10-11 09:0015160PLN / 5644PLN

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