PV235 Basics of IP telephony

Faculty of Informatics
Spring 2012
Extent and Intensity
2/0. 2 credit(s) (plus extra credits for completion). Type of Completion: zk (examination).
Teacher(s)
doc. Ing. Jaroslav Dočkal, CSc. (lecturer), doc. RNDr. Eva Hladká, Ph.D. (deputy)
Guaranteed by
prof. RNDr. Luděk Matyska, CSc.
Department of Computer Systems and Communications – Faculty of Informatics
Contact Person: doc. Ing. Jaroslav Dočkal, CSc.
Supplier department: Department of Computer Systems and Communications – Faculty of Informatics
Timetable
Mon 16:00–19:50 G123
Prerequisites (in Czech)
PB156 Computer Networks
Course Enrolment Limitations
The course is also offered to the students of the fields other than those the course is directly associated with.
The capacity limit for the course is 100 student(s).
Current registration and enrolment status: enrolled: 0/100, only registered: 0/100, only registered with preference (fields directly associated with the programme): 0/100
fields of study / plans the course is directly associated with
there are 42 fields of study the course is directly associated with, display
Course objectives
The aim of the course Fundamentals of IP telephony is to provide a broad overview of the issues-based telephony using IP. In the course of this subject, students will be familiar with the principles and methods of IP telephony and a wide range of codecs, protocols and methods to effectively provide advanced telephony services. Particular attention will be paid numbering plans, ensuring the necessary quality of service for IP telephony, diagnosing problems in IP telephony and the ability to manage them and ensure the security of telephone calls within the network infrastructure.

After completion of study students will:
• know the specifics of IP telephony and voice processing procedures in IP telephony
• be able to competently evaluate classical and modern codecs, • be knowledgeable in a wide range of protocols associated with IP telephony,
• keep track of the basic types and techniques and methods of calling voice port configuration on network elements
• know the mechanisms of call signaling over digital voice ports
• know how to use DNS for IP telephony
• know how configure up scalable dial and numbering plans, address number portability
• know how to read and write regular expressions voice translation rules
• know how to monitor the quality of service (QoS) of data networks in terms of VoIP network elements
• know ways of measuring quality of service, be able to use the E-model
• be able to diagnose problems in IP telephony networks and take appropriate action
• know the principles of telephone calls using the best-known software tools
• able to deal with alternative, overflow and backup routing in telephone networks
• know basic IP telephony security risks, methods of attacks on its infrastructure and currently used measures for their protection
Syllabus
  • Digitization of traditional voice telephony
  • Development from traditional telephony to IP telephony
  • Principles of Voice processing over IP telephony
  • Types of codecs and their characteristics, the path to modern codecs
  • data transfer protocols - RTP, RTCP, cRTP, SRTP, ZRTP and SCTP
  • Call types and configuration of voice ports on network elements
  • The H.323 as a complex other protocols
  • protocols H.225, H.245 and RAS
  • Examples of gatekeeper and gateway configuration
  • SIP – Architecture and associated security issues
  • Configuring SIP Gateways
  • Using ISDN to IP telephony
  • Call Signaling over Digital Voice Ports
  • Basic techniques of call (call waiting, call forwarding, forking, forwarding, holding, PRACK etc.)
  • Use DNS for IP Telephony, ENUM
  • Dial and numbering plans, number portability
  • Regular expressions voice translation rules
  • Monitoring Quality of Service (QoS) of data in VoIP networks
  • Priorities, policing, sharping, response to overload lines, setting speed limits for telephone traffic
  • Measuring the quality of service, E-model
  • Diagnosing problems in the IP telephony network
  • Management of telephone calls using software tool CCM and SCCP protocol
  • Management of telephone calls using software tool Asterisk and IAX protocol
  • An alternative, overflow and backup routing in telephone networks
  • Routing and handling emergency calls
  • Attacks on the security of IP telephony, the methods of securing the network infrastructure
Assessment methods
Two written examinations, the condition of the examination is completed at least two evaluations with assessment E and then the final evaluation of the higher mark in the two ratings. For each of the two written examination will be listed two terms.
Language of instruction
Czech
Further comments (probably available only in Czech)
Study Materials
The course is taught annually.
The course is also listed under the following terms Spring 2011, Spring 2013, Spring 2014, Spring 2015, Spring 2016, Spring 2017, Spring 2018, Spring 2019.
  • Enrolment Statistics (Spring 2012, recent)
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