Course Outline

Objectives:

  • Describe call signalling and setup in the voice network
  • Describe carrying of voice media and bandwidth requirements for VoIP calls
  • Describe SIP standards, services, messages and return codes
  • Describe basic call setup using SIP
  • Describe SIP flows and SDP
  • Describe registration process and making calls with a SIP Server
  • Describe IP PBX and Call Conferences
  • Describe SRV records and DNS
  • Describe uri/url/urn, ENUM and NAPTR Records
  • Describe mapping of services to an address
  • Describe SIP-T and SIP-I
  • Describe SIP early media and SIP trunks
  • Describe call flows between PSTN and IP using SIP
  • Describe Secure SIP, Secure RTP and Secure RTCP
  • Describe typical Secure SIP implementations

Practical Exercises:

  • Lab Exercise 1: Practical SIP in the LAN with Xlite
  • Lab Exercise 2: Examine SIP Packets using Wireshark
  • Lab Exercise 3: SDP, Presence and IM
  • Lab Exercise 4: Call Flows with SIP Server
  • Lab Exercise 5a: SIP Registration with DNS
  • Lab Exercise 5b: Call Flows with DNS
  • Lab Exercise 6: SIP Trunks
  • Lab Exercise 7: Security with IPSec
  • Lab Exercise 8: Security with Secure SIP

Requirements

  • It is assumed that delegates will have a working knowledge of TCP/IP.
  • A basic understanding of VoIP would be beneficial.
  21 Hours
 

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