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Course Outline
Objectives:
- Articulate the operation of circuit-switched networks.
- Differentiate between circuit-switched and packet-switched networks.
- Detail the fields and flags within the IP header, including the DSCP field.
- Elaborate on the necessity for voice compression and latency management within IP networks.
- Identify CODECs employed in voice and video compression, such as G711, G729, and H261/3/4.
- Identify and describe the fields of the Real Time Transport Protocol and Real Time Control Protocol, including DTMF tone transmission.
- Compute bandwidth requirements for diverse voice compression algorithms.
- Explain and demonstrate the requirement for security and encryption in VoIP.
- Describe and elucidate the H.323 protocol stack.
- Describe and elucidate call setup and signalling (H.225).
- Describe and elucidate H.245, fast start, and H245 tunnelling.
- Describe and elucidate SIP call setup.
- Describe and elucidate SIP Servers.
- Describe and elucidate SDP.
- Describe and elucidate Soft Switching, including MGCP and H248.
- Describe and elucidate the role of SCTP in backhauling signalling messages.
- Describe and elucidate the significance of network delay and the necessity for QoS in the network.
- Describe and elucidate the distinctions between reservation-based and prioritization-based QoS in IP networks.
- Describe the application of IntServ and RSVP in QoS.
- Describe the application of TOS and DiffServ in QoS.
- Describe and elucidate the need for multiple queues and intelligent packet scheduling at router/switch interfaces.
- Describe the use of MPLS for delivering QoS in WAN environments.
- Describe the use of VLANs for delivering QoS in LAN environments.
Practical Exercises:
- Lab Exercise 1: Practical VoIP in the LAN.
- Lab Exercise 2: Construct an IP network, initiate calls, and analyze RTP packets using Wireshark.
- Lab Exercise 3: Initiate calls and analyze SIP packets using Wireshark.
- Lab Exercise 4: Initiate calls and analyze H323 packets using Wireshark.
- Lab Exercise 5: Conduct calls between PSTN and IP Networks.
- Lab Exercise 6: Configure QoS and initiate calls to examine its 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.
Requirements
- Delegates are expected to possess a functional understanding of TCP/IP.
21 Hours
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