​​ Department of Computing and Information Technology Enterprise Communications Semester 1, 2016 Version 1.0 : 5/6/2016 ICT50415 Diploma of Information Technology Networking Competencies  ICANWK501A: Plan, implement and test enterprise communication solutions  ICTTEN5168A: Design and implement an enterprise voice over internet protocol and a unified communications o ICANWK501A 3.3, 4.2, 4.3, 4.7 o ICTTEN5168A 1.3, 1.4, 1.5, 5.4, 5.5, 6.1, 6.2, 6.3 Critical Aspects of Evidence  Evidence of the ability to: o Configure network, servers and application software to provide optimal performance, meet security requirements and avoid known conflicts o Configure applications to meet customisation requirements o Design and implement a UC network, including implementing the infrastructure for enterprise VOIP and EC systems to meet business requirements using converged networks o Apply knowledge of current networking, transmission technologies and protocols Instructions To Students  Submit your assessment items by the specified dates  Present material according to IT Dept. standards specified.  Practical activities are to be noted down in the student journals specifically for this subject. Marks will be allotted according to the practical and the write up. Method Assessed as a Prac in-class activity Due Date As completed. Refer to subject outline. Equipment Grade Approx. 4% of final grade (40% total) Minimum Competency A satisfactory assessment. Windows Based Computer(s) with Virtualisation Environment Page 1 of 4 Enterprise Communications – Practical Activity Exercise 7 On the successful completion of the following activities, students can expect to achieve approximately 4% from the 40% allotted for the practical exercises. The aims of this exercise are to examine the various Protocols and Codecs that are used in VOIP Applications. In addition we will: o Investigate exactly what VoIP is o Define the terms "Protocols" and "Codecs" o Identify the protocols and codecs commonly in use in VoIP systems o Identify the hardware that is commonly implemented in VoIP systems Note that this is a research and documentation activity. As such this is classified as an "Exercise" rather than a Practical Exercise. The written results to this exercise will need to be completed in a Word Document that is emailed to your assessor after the exercise is set. Activity 1 In this activity you will research exactly what "VoIP" is, and why VoIP is replacing traditional analogue PSTN systems.  Read the following articles:  http://www.voip-info.org/wiki/view/What+is+VOIP  http://www.voip-sip.org/what- is-voip/  http://voip.about.com/od/voipbasics/u/VoIPBasicsUP.htm  Answer and fully explain your answers to the following questions:  Based on the articles above, how would you explain what is VoIP?  Why is VoIP preferred over POTS? Why has VoIP become so popular?  What are some of the advantages of VoIP over POTS?  What are some of the disadvantages of VoIP over POTS?  What is the "PSTN"? How does it work?  How is a PSTN different to a VoIP system?  What is a trunk? Explain.  Why are traditional Analogue PSTN trunks limiting?  What is a PBX?  What sort of resources do you need to implement a VoIP system?  Why do we need to use compression with VoIP systems?  What is a "Codec"? List the most common "codecs" in use with VoIP systems,  List and briefly explain the 5 most common protocols in use for VoIP systems detailing some of the features of each. Page 2 of 4 Enterprise Communications – Practical Activity Note that this course will primarily deal with the H.323/SIP and H.248/MGCP Protocols Activity 2 In this activity we will examine the H.323/SIP and H.248/MGCP Protocols in a little more detail.  Read the following article:  http://www.packetizer.com/ipmc/papers/understanding_voip/voip_protocols.html  Answer and fully explain your answers to the following questions:  What is a "real time protocol" and how do they differ from operation with regards  Referring to RFC's 3550 and 3551 (available as links in the first article) explain  Detail how the SIP protocol works.  What are some of the limitations of the SIP protocol?  What are the differences between SIP and MCGP?  What form of Protocol does "Skype" use?  Document your results in your Journal and email these to your teacher. Activity 3 In this activity we will research and analyse the terms "Protocols" and "Codecs" as they relate to VoIP systems. In particular we will identify and describe some of the key features of the main protocols and codecs employed in VoIP communication systems.  Answer the following questions, providing web references (where appropriate) with each answer:  What is a protocol? Explain.  List (and briefly detail) the major protocols utilised under VoIP systems.  What is a "codec"?  How do Codecs differ from Protocols?  List the major codecs in use in VoIP systems. List the major features of each  Detail the advantages and disadvantages of each codec. to "normal" protocols? the differences and functions of the RTP and RTCP. codec. Activity 4 In this activity we will identify the hardware that is commonly implemented within VoIP systems.  Answer the following questions/tasks, providing web references (where appropriate) with each answer:  List and provide web references to at least 3 devices that could be used in a domestic environment to implement a VoIP system. Page 3 of 4 Enterprise Communications – Practical Activity  What sort of hardware would be required to implement an enterprise VoIP  Provide a brief example diagram (in Visio using Cisco notation) that details the system? List and provide references to at least 5 items of hardware that may be used. configuration of an Enterprise VoIP system, showing the major components utilised in an enterprise level VoIP system. Explain and demonstrate your observations to your teacher Upload your Journal Notes to Moodle for assessment. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- If there are no further tasks given by the Teacher at this point then shut down your virtual operating systems. Remember to shut down the client workstation first and then the server operating system ********************************************************************************************************* At the end of the practical session, please ensure that you have saved the folders of the virtual operating systems on to your USB hard disk. Before leaving the lab room ensure that any software installed on the base OS is removed and that your machine has been left in a better state than you found it in.